Compositions containing mold release agents

Claim 2

In a process for the preparation of molded articles by injecting a polyurethane-forming composition containing at least one active hydrogen-containing material and at least one material containing an average of more than one --NCO group per molecule into a mold and thereafter removing a resultant polyurethane molded article therefrom; the improvement which comprises employing as said polyurethane-forming composition one which contains an effective amount of, as a mold release agent, at least one fatty acid amide having at least one of the hydrogen atoms attached to the nitrogen of an amide group replaced with a hydroxyl-containing substitutent.

Claim 3

The process of claim 1 wherein said fatty acid amide mold release agent is one or more of those represented by the formula ##STR3## wherein each R and R 1 is independently hydrogen or a group represented by the formulas HO--C.sub.n H.sub.2n -- FORMULA II or H--OC.sub.m.sub.H.sub.2m --.sub.y FORMULA III; n has a value from 1 to about 4; each m independently has a value from 2 to about 4; y has a value of from 1 to about 6; and R 3 is a saturated or unsaturated aliphatic group having from about 8 to about 50 carbon atoms, with the proviso that at least one of R and R 1 contains a hydroxyl group.

Claim 4

The process of claim 2 wherein each R and R 1 is a group other than hydrogen.

Claim 5

The process of claim 3 wherein n has a value of from 2 to about 3; each m independently has a value of 2 or 3; y as a value of 1 or 2 and R 3 has from about 10 to about 24 carbon atoms.

Claim 6

The process of claim 4 wherein said fatty acid amide mold release agent is at least one of N,N-bis(2-hydroxyethyl)stearamide, N,N-bis(2-hydroxyethyl)lauramide, N,N-bis(2-hydroxyethyl)palmitamide, N,N-bis(2-hydroxyethyl)oleamide, N,N-bis(2-hydroxyethyl)linoleamide, N,N-bis(2-hydroxyethyl)ricinoleamide, N,N-bis(2-hydroxyethyl)cocoyl sarcosinamide, N-(2-hydroxyethyl)stearamide, or N,N-bis(2-hydroxypropyl)stearamide.

Claim 7

The process of claim 5 wherein said fatty acid amide mold release agent is at least one of N,N-bis(2-hydroxyethyl)lauramide, N,N-bis(2-hydroxyethyl)stearamide or N,N-bis(2-hydroxyethyl)isostearamide.

Claim 8

The process of claims 1, 2, 3, 4, 5 or 6 wherein mold release agent is present in a quantity of from about 0.005 to about 10 parts per 100 parts by weight of total active hydrogen-containing material employed.

Claim 9

The process of claim 7 wherein said mold release agent is present in a quantity of from about 2 to about 4 parts per 100 parts by weight of total active hydrogen-containing material employed.

Claim 10

A composition consisting essentially of (A) a mixture suitable as a reactant with polyisocyanates in the preparation of polyurethanes, and of (1) at least one relatively high equivalent weight material containing at least 2 hydroxyl groups and (2) at least one relatively low equivalent weight material containing a plurality of at least one member selected from OH and NH 2 groups or at least one of each such groups; and (B) at least one fatty acid amide having at least one of the hydrogen atoms attached to the nitrogen atom of an amide group replaced with a hydroxyl-containing substituent; and wherein component (B) is present in a quantity of from about 0.05 parts per 100 parts by weight of component (A) up to the miscibility limit of the mixture.

Claim 11

A composition consisting essentially of (A) a mixture suitable as a reactant with polyisocyanates in the preparation of polyurethanes, and of (1) at least one relatively high equivalent weight material containing at least 2 hydroxyl groups and (2) at least one relatively low equivalent weight material containing a plurality of at least one member selected from OH and NH 2 groups or at least one of each such groups; and (B) at least one fatty acid amide having at least one of the hydrogen atoms attached to the nitrogen atom of an amide group replaced with a hydroxyl-containing substituent; and wherein component (B) is present in a quantity of from about 0.05 parts per 100 parts by weight of component (A) up to the miscibility limit of the mixture.

Claim 12

A composition of claim 9 wherein each material of component (A-1) has an average functionality of from about 2 to about 8 and an average hydroxyl equivalent weight of from about 500 to about 5000; each material of component (A-2) has an average active hydrogen functionality of from about 2 to about 16 and an active hydrogen equivalent weight of from about 15 to about 500 with the proviso that when such material contains only hydroxyl groups as the source of active hydrogen atoms then the maximum equivalent weight is about 200; and component (B) is at least one substituted fatty acid amide represented by the formula ##STR4## wherein each R and R 1 is independently hydrogen or a group represented by the formulas HO--C.sub.n H.sub.2n -- FORMULA II or H--OC.sub.m H.sub.2m --.sub.y FORMULA III; n has a value from 1 to about 4; each m independently has a value from 2 to about 4; y has a value of from 1 to about 6; and R 3 is a saturated or unsaturated aliphatic group having from about 8 to about 50 carbon atoms, with the proviso that at least one of R and R 1 contains a hydroxyl group.

Claim 13

A composition of claim 10 wherein each material of component (A-1) has an average functionality of from about 2 to about 4 and an average equivalent weight of from about 1000 to about 3000; each material of component (A-2) has an average functionality of from about 2 to about 8 and an average equivalent weight of from about 32 to about 200; and each R and R 1 of each material in component (B) is a group represented by formulas 2 or 3.

Claim 14

A composition of claim 11 wherein component (A-1) is a polyether polyol or mixture of such polyols and in component (B) n has a value of from 2 to about 3 and each m independently has a value of 2 or 3, y has a value of 1 or 2 and R 3 has a value of from about 10 to about 24.

Claim 15

A composition of claim 12 wherein component (B) is at least one of N,N-bis(2-hydroxyethyl)stearamide, N,N-bis(2-hydroxyethyl)lauramide, N,N-bis(2-hydroxyethyl)palmitamide, N,N-bis(2-hydroxyethyl)oleamide, N,N-bis(2-hydroxyethyl)linoleamide, N,N-bis(2-hydroxyethyl)ricinoleamide, N,N-bis(2-hydroxyethyl)cocoyl sarcosinamide, N-(2-hydroxyethyl)stearamide, or N,N-bis(2-hydroxypropyl)stearamide.

Claim 16

A composition of claim 13 wherein component (B) is at least one of N,N-bis(2-hydroxyethyl)lauramide, N,N-bis(2-hydroxyethyl)stearamide or N,N-bis(2-hydroxyethyl)isostearamide.

Claim 17

A composition of claims 9, 10, 11, 12, 13 or 14 wherein component (B) is present in an amount of from about 0.05 to about 10 parts by weight per 100 parts by weight of component (A).

Claim 18

A composition of claim 15 wherein component (B) is present in an amount of from about 2 to about 4 parts per 100 parts by weight of component (A).

Claim 19

A composition consisting essentially of a mixture of (A) one or more materials suitable as reactants with polyisocyanates in the preparation of polyurethanes and containing a plurality of active hydrogen atoms and (B) at least one fatty acid amide having at least one of the hydrogen atoms attached to the nitrogen atom of an amide group replaced with a hydroxyl-containing substituent; wherein component (B) is present in an quantity up to the miscibility limit of the mixture.

Claim 20

A composition consisting essentially of a mixture of (A) one or more materials suitable as reactants with polyisocyanates in the preparation of polyurethanes and containing a plurality of active hydrogen atoms and (B) at least one fatty acid amide having at least one of the hydrogen atoms attached to the nitrogen atom of an amide group replaced with a hydroxyl-containing substituent; wherein component (B) is present in an quantity up to the miscibility limit of the mixture.

Claim 21

A composition of claim 17 wherein component (A) contains, as the sole source of active hydrogen atoms, at least one material having an average hydroxyl functionality of from about 2 to about 8 and an active hydroxyl equivalent weight of from about 31 to about 5000 and component (B) is at least one substituted fatty acid amide represented by the formula ##STR5## wherein each R and R 1 is independently hydrogen or a group represented by the formulas HO--C.sub.n H.sub.2n -- FORMULA II or H--OC.sub.m H.sub.2n --.sub.y FORMULA III; n has a value from 1 to about 4; each m independently has a value from 2 to about 4; y has a value of from 1 to about 6; and R 3 is a saturated or unsaturated aliphatic group having from about 8 to about 50 carbon atoms, with the proviso that at least one of R and R 1 contains a hydroxyl group.

Claim 22

A composition of claim 18 wherein component (A) contains at least one polyether polyol having an average hydroxyl functionality of from about 2 to about 4 and an average hydroxyl equivalent weight of from about 1000 to about 3000 and each R and R 1 of each material in component (B) is a group represented by formulas 2 or 3 wherein n has a value from 2 to about 4; each m independently has a value of from 2 to about 3; y has a value of from 1 to about 2 and R 3 has from 10 to about 24 carbon atoms.

Claim 23

A composition of claim 19 wherein component (B) is at least one of N,N-bis(2-hydroxyethyl)stearamide, N,N-bis(2-hydroxyethyl)lauramide, N,N-bis(2-hydroxyethyl)palmitamide, N,N-bis(2-hydroxyethyl)oleamide, N,N-bis(2-hydroxyethyl)linoleamide, N,N-bis(2-hydroxyethyl)ricinoleamide, N,N-bis(2-hydroxyethyl)cocoyl sarcosinamide, N-(2-hydroxyethyl)stearamide, or N,N-bis(2-hydroxypropyl)stearamide.

Claim 24

A composition of claim 20 wherein component (B) is at least one of N,N-bis(2-hydroxyethyl)lauramide, N,N-bis(2-hydroxyethyl)stearamide or N,N-bis(2-hydroxyethyl)isostearamide.

Claim 25

A composition of claims 17, 18, 19, 20 or 21 wherein component (B) is present in an amount of from about 0.05 to about 10 parts per 100 parts by weight of component (A).

Claim 26

A composition of claim 22 wherein component (B) is present in an amount of from about 2 to about 4 parts per 100 parts by weight of component (A).

Claim 27

A composition of claims 9, 10, 11, 12, 13, 14, 17, 18, 19, 20 or 21 which additionally contains minor quantities of one or more of any combination of cell control agents, fire retardant agents, coloring agents or catalysts for reacting a material containing an NCO and/or an NCS group with an active hydrogen containing material and/or with another NCO or NCS group.

Claim 28

A composition of claim 15 which additionally contains minor quantities of one or more of any combination of cell control agents, fire retardant agents, coloring agents, blowing agents or catalysts for reacting a material containing an NCO and/or an NCS group with an active hydrogen containing material and/or with another NCO or NCS group.

Claim 29

A composition of claim 16 which additionally contains minor quantities of one or more of any combination of cell control agents, fire retardant agents, coloring agents, blowing agents or catalysts for reacting a material containing an NCO and/or an NCS group with an active hydrogen containing material and/or with another NCO or NCS group.

Claim 30

A composition of claim 21 which additionally contains minor quantities of one or more of any combination of cell control agents, fire retardant agents, coloring agents, blowing agents or catalysts for reacting a material containing an NCO and/or an NCS group with an active hydrogen containing material and/or with another NCO or NCS group.

Claim 31

A composition of claim 22 which additionally contains minor quantities of one or more of any combination of cell control agents, fire retardant agents, coloring agents, blowing agents or catalysts for reacting a material containing an NCO and/or an NCS group with an active hydrogen containing material and/or with another NCO or NCS group.