Polymer/polyisocyanate compositions, processes for making same and processes for making polyurethane products therefrom

Claim 2

A polymer/polyisocyanate composition comprising: (1) a major amount of a first organic polyisocyanate; (2) a minor amount of a first polymer of at least one ethylenically unsaturated monomer stably dispersed in said polyisocyanate; and (3) a minor amount of a stabilizer selected from the group consisting of: (a) a polyoxyalkylene polyol having a number average molecular weight of at least 4000, and (b) an isocyanato terminated prepolymer formed by reacting said polyol and a second organic polyisocyanate with the proviso that the isocyanato terminated prepolymer and the first organic polyisocyanate are present in a relative amount that provides greater than 25 equivalents of isocyanato groups per equivalent of hydroxyl groups.

Claim 3

A composition as claimed in claim 1 wherein the polyol contains stably dispersed therein a minor amount of a second polymer of at least one ethylenically unsaturated monomer.

Claim 4

A composition as claimed in claim 1 wherein the polyol contains an ester group.

Claim 5

A composition as claimed in claim 1 wherein the stabilizer is a polyoxalkylene polyol selected from the group consisting of: (i) a polypropylene oxide diol made from propylene oxide and dipropylene glycol and having a theoretical number average molecular weight of about 4000 and a hydroxyl number of about 27.9; (ii) a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 4950 and a hydroxyl number of about 36.2, wherein the alkylene oxide units are present primarily as blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units; (iii) a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units; (iv) a polypropylene oxide-polyethylene oxide polyol made from propylene oxide and ethylene oxide and an 80/20 blend by weight of sorbitol and glycerine said polyol having a theoretical number average molecular weight of about 10,8000 and a hydroxyl number of about 29.55, wherein the alkylene oxide units are present primarily in blocks, and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the polyol; the polyol contains about 8.6 weight percent ethyleneoxy units based on the total polyol weight.

Claim 6

A composition as claimed in claim 1 wherein the stabilizer is an isocyanato terminated prepolymer selected from the group consisting of: (i) a prepolymer of about 60 parts by weight of a liquid 4,4'-diphenylmethylene diisocyanate modified with carbodiimide lineages and having a calculated equivalent weight of 144 and a free isocyanato content of 29.2 weight percent and about 40 parts by weight of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said prepolymer having a free isocyanato content of about 16.39 weight percent and a Brookfield viscosity of 1110 cps at 25° C.; (ii) a prepolymer of about 60 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of 30 weight percent and about 40 parts by weight of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said prepolymer having a free isocyanato content of about 17.04 weight percent and a Brookfield viscosity of 1424 cps at 25° C.; (iii) a blend of equal parts by weight of: (a) a prepolymer of about 60 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent and about 40 parts by weight of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units; and (b) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent; said blend having a free isocyanato content of about 21.95 weight percent and a Brookfield viscosity of 1570 cps at 25° C.

Claim 7

A composition as claimed in claim 2 wherein the stabilizer is a polymer/polyol containing about 16 weight percent polyacrylonitrile polymerized is a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units.

Claim 8

A composition as claimed in claim 2 wherein the stabilizer is a polymer/prepolymer selected from the group consisting of: (i) a polymer/prepolymer containing about 18 weight percent of polyacrylonitrile polymerized in a prepolymer of about 60 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent and about 40 parts by weight of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said polymer/prepolymer having a free isocyanato content of about 12.94 weight percent and a Brookfield viscosity of 9340 cps at 25° C.; (ii) a polymer/prepolymer containing about 17.35 weight percent of polyacrylonitrile polymerized in a prepolymer of about 60 parts by weight of a liquid 4,4'-diphenylmethylene diisocyanate modified with carbodiimide linkages and having a calculated equivalent weight of 144 and a free isocyanato content of 29.2 weight percent and about 40 parts by weight of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said polymer/prepolymer having a free isocyanato content of about 12.59 weight percent and a Brookfield viscosity of 9400 cps at 25° C.; (iii) a blend of: (a) about 30 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent, (b) about one part by weight of azo-bis-isobutyronitrile, and (c) about 70 parts by weight of a polymer/prepolymer containing 60 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent and about 40 parts by weight of a polymer/polyol containing about 16 weight percent of polyacrylonitrile polymerized in a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said polymer/polyol having a hydroxyl number of 22.09 and a Brookfield viscosity of 3100 cps at 25° C., said blend (iii) having a free isocyanato content of about 20.91 weight percent and a Brookfield viscosity of 590 cps at 25° C.; and (iv) a blend of: (a) about 70 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent, (b) about 30 parts by weight of a polymer/prepolymer containing 60 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent and about 40 parts by weight of a polymer/polyol containing about 16 weight percent of polyacrylonitrile polymerized in a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said blend (iv) having a free isocyanato content of about 25.95 weight percent and a Brookfield viscosity of 155 cps at 25° C.

Claim 9

A composition as claimed in claim 3 wherein the stabilizer is a modified polyol containing an ester group selected from the group consisting of: (i) a polyol adduct of 0.5 mole of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units and one mole of Maleic anhydride, said adduct having an acid number of 7.23 mg KOH/gm and a Brookfield viscosity of 2068 cps at 25° C.; (ii) a polyol adduct of 0.5 mole of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units and one mole of maleic anhydride, said adduct having an acid number of 7.77 mg KOH/gm and a Brookfield viscosity of 2068 cps at 25° C.; (iii) a polyol adduct of 0.5 mole of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 4950 and a hydroxyl number of about 36.2, wherein the alkylene oxide units are present primarily as blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units and one mole of maleic anhydride, said adduct having an acid number of 12.51 mg KOH/gm and a Brookfield viscosity of 1172 cps at 25° C.; (iv) a polyol adduct of 0.5 mole of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units and one mole of maleic anhydride, said adduct having an acid number of 13.09 mg KOH/gm and a Brookfield viscosity of 2492 cps at 25° C.; and (v) a polyol adduct of 0.5 mole of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units and one mole of succinic anhydride, said adduct having an acid number of 13.7 mg KOH/gm and a Brookfield viscosity of 2850 cps at 25° C.

Claim 10

A composition as claimed in claim 1 wherein the polymer is polyacrylonitrile homopolymer.

Claim 11

A composition as claimed in claim 1 wherein the polymer is a copolymer of acrylonitrile and a monomer selected from the group consisting of acrylamide, acrylic acid, methyl methacrylate, vinylidene chloride and styrene.

Claim 12

A composition as claimed in claim 1 wherein the polymer is a terpolymer of acrylonitrile, acrylic acid and acrylamide.

Claim 13

A composition as claimed in claim 2 wherein the first polymer is polyacrylonitrile homopolymer.

Claim 14

A composition as claimed in claim 2 wherein the first polymer is a copolymer of acrylonitrile and a monomer selected from the group consisting of acrylamide, acrylic acid, methyl methacrylate, vinylidene chloride and styrene.

Claim 15

A composition as claimed in claim 2 wherein the first is a terpolymer of acrylonitrile, acrylic acid and acrylamide.

Claim 16

A composition as claimed in claim 3 wherein the polymer is polyacrylonitrile homopolymer.

Claim 17

A composition as claimed in claim 3 wherein the polymer is a copolymer of acrylonitrile and a monomer selected from the group consisting of acrylamide, acrylic acid, methyl methacrylate, vinylidene chloride and styrene.

Claim 18

A composition as claimed in claim 3 wherein the polymer is a terpolymer of acrylonitrile, acrylic acid and acrylamide.

Claim 19

A composition as claimed in claim 2 wherein the second polymer is polyacrylonitrile homopolymer.

Claim 20

A composition as claimed in claim 1 wherein the first organic polyisocyanate is selected from the group consisting of: (i) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent; (ii) a liquid 4,4'-diphenylmethylene diisocyanate modified with carbodiimide linkages and having a calculated equivalent weight of 144 and a free isocyanato content of 29.2 weight percent; (iii) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of 30.06 weight percent; (iv) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 135 and a free isocyanato content of 31.5 weight percent; and (v) a blend of about 80 parts by weight of tolylene diisocyanates and 20 parts by weight of a polymeric 4,4'-diphenylemethylene diisocyanate having a calculated equivalent weight of about 133 and a free isocyanato content of 31.5 weight percent; and (vi) tolylene diisocyanate.

Claim 21

A composition as claimed in claim 2 wherein the first organic polyisocyanate is selected from the group consisting of the organic polyisocyanates of groups (I) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent; (II) a liquid 4,4'-diphenylmethylene diisocyanate modified with carbodiimide linkages and having a calculated equivalent weight of 144 and a free isocyanato content of 29.2 weight percent; (III) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of 30.06 weight percent; (IV) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 135 and a free isocyanato content of 31.5 weight percent; (V) a blend of about 80 parts by weight of tolylene diisocyanates and 20 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 133 and a free isocyanato content of 31.5 weight percent; (VI) tolylene diisocyanate.

Claim 22

A composition as claimed in claim 3 wherein the first organic polyisocyanate is selected from the group consisting of the organic polyisocyanates of groups (I) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent; (II) a liquid 4,4'-diphenylmethylene diisocyanate modified with carbodiimide linkages and having a calculated equivalent weight of 144 and a free isocyanato content of 29.2 weight percent; (III) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of 30.06 weight percent; (IV) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 135 and a free isocyanato content of 31.5 weight percent; (V) a blend of about 80 parts by weight of tolylene diisocyanates and 20 parts by weight of a polymeric 4,4'-diphenylemethylene diisocyanate having a calculated equivalent weight of about 133 and a free isocyanato content of 31.5 weight percent; (VI) tolylene diisocyanate.

Claim 23

A composition as claimed in claim 1 wherein the second organic polyisocyanate is selected from the group consisting of the organic polyisocyanates of groups (I) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent; and (II) a liquid 4,4'-diphenylmethylene diisocyanate modified with carbodiimide linkages and having a calculated equivalent weight of 144 and a free isocyanato content of 29.2 weight percent.

Claim 24

A process for preparing a polymer/polyisocyanate composition which is convertible by reaction with a poly(active hydrogen organic compound to a polyurethane product comprising polymerizing in situ a minor amount of at least one ethylenically unsaturated monomer forming a first polymer in a major amount of a first organic polyisocyanate in the presence of an effective amount of a free radical catalyst and a minor amount of a stabilizer selected from the group consisting of (a) a polyoxyalkylene polyol having a number average molecular weight of at least 4000 and (b) an isocyanato terminated prepolymer formed by reacting said polyol and second organic polyisocyanate with the proviso that the isocyanato terminated prepolymer and the first organic polyisocyanate are present in a relative amount that provides greater than 25 equivalents of isocyanato groups per equivalent of hydroxyl groups, at a temperature ranging from about 70° C. to about 140° C. to form said composition, said stabilizer in an effective amount improving the affinity of the polymer particles for said first organic polyisocyanate and minimizing agglomeration of said polymer particles in said first organic polyisocyanate to provide a stable dispersion of the polymer particles in said first organic polyisocyanate.

Claim 25

A process for preparing a polymer/polyisocyanate composition which is convertible by reaction with a poly(active hydrogen organic compound to a polyurethane product comprising polymerizing in situ a minor amount of at least one ethylenically unsaturated monomer forming a first polymer in a major amount of a first organic polyisocyanate in the presence of an effective amount of a free radical catalyst and a minor amount of a stabilizer selected from the group consisting of (a) a polyoxyalkylene polyol having a number average molecular weight of at least 4000 and (b) an isocyanato terminated prepolymer formed by reacting said polyol and second organic polyisocyanate with the proviso that the isocyanato terminated prepolymer and the first organic polyisocyanate are present in a relative amount that provides greater than 25 equivalents of isocyanato groups per equivalent of hydroxyl groups, at a temperature ranging from about 70° C. to about 140° C. to form said composition, said stabilizer in an effective amount improving the affinity of the polymer particles for said first organic polyisocyanate and minimizing agglomeration of said polymer particles in said first organic polyisocyanate to provide a stable dispersion of the polymer particles in said first organic polyisocyanate.

Claim 26

A process as claimed in claim 23 wherein the first organic polyisocyanate and the stabilizer are added in the form of a blend.

Claim 27

A process as claimed in claim 23 wherein the first organic polyisocyanate, the stabilizer and the free radical catalyst are added in the form of a blend.

Claim 28

A process as claimed in claim 23 wherein the polyol contains stably dispersed therein a minor amount of a second polymer of at least one ethylenically unsaturated monomer.

Claim 29

A process as claimed in claim 23 wherein the polyol contains an ester group.

Claim 30

A process as claimed in claim 26 wherein the first organic polyisocyanate and the stabilizer are added in the form of a blend.

Claim 31

A process as claimed in claim 26 wherein the first organic polyisocyanate, the stabilizer and the free radical catalyst are added in the form of a blend.

Claim 32

A process as claimed in claim 27 wherein the first organic polyisocyanate and the stabilizer are added in the form of a blend.

Claim 33

A process as claimed in claim 27 wherein the first organic polyisocyanate, the stabilizer and the free radical catalyst are added in the form of a blend.

Claim 34

A process as claimed in claim 24 wherein the stabilizer is a polyoxalkylene polyol selected from the group consisting of: (i) a polypropylene oxide diol made from propylene oxide and dipropylene glycol and having a theoretical number average molecular weight of about 4000 and a hydroxyl number of about 27.9; (ii) a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 4950 and a hydroxyl number of about 36.2, wherein the alkylene oxide units are present primarily as blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units. (iii) a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units; (iv) a polypropylene oxide-polyethylene oxide polyol made from propylene oxide and ethylene oxide and an 80/20 blend by weight of sorbitol and glycerine said polyol having a theoretical number average molecular weight of about 10,800 and a hydroxyl number of about 29.55 wherein the alkylene oxide units are present primarily in blocks, and the end units are substantially all ethylene oxide units, i.e. the ethylene oxide is used to cap the polyol; the polyol contains about 8.6 weight percent ethyleneoxy units based on the total polyol weight.

Claim 35

A process as claimed in claim 24 wherein the stabilizer is an isocyanate terminated prepolymer selected from the group consisting of: (i) a prepolymer of about 60 parts by weight of a liquid 4,4'-diphenylmethylene diisocyanate modified with carboniimide lineages and having a calculated equivalent weight of 144 and a free isocyanato content of 29.2 weight percent and about 40 parts by weight of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said prepolymer having a free isocyanato content of about 16.39 weight percent and a Brookfield viscosity of 1110 cps at 25° C.; (ii) a prepolymer of about 60 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of 30 weight percent and about 40 parts by weight of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said prepolymer having a free isocyanato content of about 17.04 weight percent and a Brookfield viscosity of 1424 cps at 25° C.; (iii) a blend of equal parts by weight of: (a) a prepolymer of about 60 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent and about 40 parts by weight of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units; and (b) a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent; said blend having a free isocyanato content of about 21.95 weight percent and a Brookfield viscosity of 1570 cps at 25° C.

Claim 36

A process as claimed in claim 27 wherein the stabilizer is a polymer/polyol containing about 16 weight percent polyacrylonitrile polymerized in a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units.

Claim 37

A process as claimed in claim 27 wherein the stabilizer is a polymer/prepolymer selected from the group consisting of: (i) a polymer/prepolymer containing about 18 weight percent of polyacrylonitrile polymerized in a prepolymer of about 60 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent and about 40 parts by weight of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said polymer/prepolymer having a free isocyanato content of about 12.94 weight percent and a Brookfield viscosity of 9340 cps at 25° C.; (ii) a polymer/prepolymer containing about 17.35 weight percent of polyacrylonitrile polymerized in a prepolymer of about 60 parts by weight of a liquid 4,4'-diphenylmethylene diisocrynate modified with carbodiimide linkages and having a calculated equivalent weight of 144 and a free isocyanato content of 29.2 weight percent and about 40 parts by weight of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said polymer/prepolymer having a free isocyanato content of about 12.59 weight percent and a Brookfield viscosity of 9400 cps at 25° C.; (iii) a blend of: (a) about 30 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent, (b) about one part by weight of azo-bis-isobutyronitrile, and (c) about 70 parts by weight of a polymer/prepolymer containing 60 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent and about 40 parts by weight of a polymer/polyol containing about 16 weight percent of polyacrylonitrile polymerized in a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e, the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said polymer/polyol having a hydroxyl number of 22.09 and a Brookfield viscosity of 3100 cps at 25° C., said blend (iii) having a free isocyanato content of about 20.91 weight percent and a Brookfield viscosity of 590 cps at 25° C.; and (iv) a blend of: (a) about 70 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent, (b) about 30 parts by weight of a polymer/prepolymer containing 60 parts by weight of a polymeric 4,4'-diphenylmethylene diisocyanate having a calculated equivalent weight of about 140 and a free isocyanato content of about 30 weight percent and about 40 parts by weight of a polymer/polyol containing about 16 weight percent of polyacrylonitrile polymerized in a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units, said blend (iv) having a free isocyanato content of about 25.95 weight percent and a Brookfield viscosity of 155 cps at 25° C.

Claim 38

A process as claimed in claim 28 wherein the stabilizer is modified polyol containing an ester group selected from the group consisting of: (i) a polyol adduct of 0.5 mole of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units and one mole of Maleic anhydride, said adduct having an acid number of 7.23 mg KOH/gm and a Brookfield viscosity of 2068 cps at 25° C.; (ii) a polyol adduct of 0.5 mole of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e. the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units and one mole of maleic anhydride, said adduct having an acid number of 7.77 mg KOH/gm and a Brookfield viscosity of 2068 cps at 25° C.; (iii) a polyol adduct of 0.5 mole of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 4950 and a hydroxyl number of about 36.2, wherein the alkylene oxide units are present primarily as blocks and the end units are substantially all ethylene oxide units, i.e. the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units and one mole of maleic anhydride, said adduct having an acid number of 12.51 mg KOH/gm and a Brookfield viscosity of 1172 cps at 25° C.; (iv) a polyol adduct of 0.5 mole of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units and one mole of maleic anhydride, said adduct having an acid number of 13.09 mg KOH/gm and a Brookfield viscosity of 2492 cps at 25° C.; and (v) a polyol adduct of 0.5 mole of a polypropylene oxide-polyethylene oxide triol made from propylene and ethylene oxides and glycerine and having a theoretical number average molecular weight of about 6000 and a hydroxyl number of about 28.09, wherein the alkylene oxide units are present primarily in blocks and the end units are substantially all ethylene oxide units, i.e., the ethylene oxide is used to cap the triol; based on its total weight, this triol contains about 14 weight percent ethyleneoxy units and one mole of succinic anhydride, said adduct having an acid number of 13.7 mg KOH/gm and a Brookfield viscosity of 2850 cps at 25° C.

Claim 39

A process as claimed in claim 23 wherein the free radical catalyst is 2,2'-azo-bis-isobutyronitrile.

Claim 40

A process as claimed in claim 23 wherein the free radical catalyst is tert-butyl peroctoate.

Claim 41

A process as claimed in claim 24 wherein the free radical catalyst is benzoyl peroxide.

Claim 42

A method for producing a polyurethane elastomer by reacting a mixture comprising (a) a polymer/polyisocyanate composition as claimed in claim 1 and (b) a polyol(active hydrogen) organic compound, in the presence of (c) a catalyst for the reaction of (a) and (b) to produce the polyurethane.

Claim 43

A method for producing a polyurethane elastomer by reacting a mixture comprising (a) a polymer/polyisocyanate composition as claimed in claim 2 and (b) a poly(active hydrogen) organic compound, in the presence of (c) a catalyst for the reaction of (a) and (b) to produce the polyurethane.

Claim 44

A method for producing a polyurethane elastomer by reacting a mixture comprising (a) a polymer/polyisocyanate composition as claimed in claim 3 and (b) a poly (active hydrogen) organic compound, in the presence of (c) a catalyst for the reaction of (a) and (b) to produce the polyurethane.

Claim 45

A method for producing a polyurethane foam by reacting and foaming a mixture comprising (a) the polymer/polyisocyanate composition claimed in claim 1, (b) a poly (active hydrogen) organic compound, (c) a catalyst for the reaction of (a) and (b) to produce the polyurethane, (d) a blowing agent and (e) a foam stabilizer.

Claim 46

A method for producing a polyurethane foam by reacting and foaming a mixture comprising (a) the polymer/polyisocyanate composition claimed in claim 2, (b) a poly (active hydrogen) organic compound, (c) a catalyst for the reaction of (a) and (b) to produce the polyurethane, (d) a blowing agent and (e) a foam stabilizer.

Claim 47

A method for producing a polyurethane foam by reacting and foaming a mixture comprising (a) the polymer/polyisocyanate composition claimed in claim 3, (b) a poly (active hydrogen) organic compound), (c) a catalyst for the reaction of (a) and (b) to produce the polyurethane, (d) a blowing agent and (e) a foam stabilizer.

Claim 48

The polyurethane elastomer as claimed in claim 40.

Claim 49

The polyurethane elastomer as claimed in claim 41.

Claim 50

The polyurethane elastomer as claimed in claim 42.

Claim 51

The polyurethane foam as claimed in claim 43.

Claim 52

The polyurethane foam as claimed in claim 44.

Claim 53

The polyurethane foam as claimed in claim 45.