Precured silicone emulsion

Claim 2

An aqueous silicone emulsion stabilized cationically or nonionically or by a combination of both which yields an elastomer upon removal of the water comprising (1) 100 parts by weight of cationically or nonionically stabilized polydiorganosiloxane emulsion, the polydiorganosiloxane having at least two reactive groups per molecule, the organo radicals being monovalent hydrocarbon radicals containing less than 7 carbon atoms per radical or 2-(perfluoroalkyl)ethyl radicals having less than 7 carbon atoms per radical, the reactive groups selected from the atoms or radicals consisting of (a) hydrogen, (b) OR, where R is hydrogen, monovalent hydrocarbon radical or substituted hydrocarbon radical having less than 7 carbon atoms, functionalized hydrocarbon radicals, nitrogen compounds of the formula --N═CR' 2 or --NR'COR' or --NR' 2 , where R' is either hydrogen or monovalent hydrocarbon radicals having less than 7 carbon atoms, (c) groups of the formula --NR 2 or --NCOR, where R is as defined above, and (d) halogen, (2) from 0.1 to 10 parts by weight of tin (II) catalyst, and, when (1) has only 2 reactive groups per molecule, (3) sufficient crosslinker on a stoichiometric basis selected from the group consisting of (e) silane of the formula R x SiY 4-x where Y is selected from the group consisting of hydrogen, halogen, and OR', and R and R' are as defined above, and x is either 0 or 1; and (f) silazane of the formula R x Si(NR' 2 ) 4-x , where R, R' and x are as defined above; the emulsion being able to be filled with either reinforcing or extending fillers or pigments or combinations thereof, the emulsion yielding an elastomer upon evaporation of the water.

Claim 3

The emulsion of claim 1 in which (1) has 2 reactive groups per molecule and (3) is present.

Claim 4

The emulsion of claim 1 in which there is also present a filler.

Claim 5

The emulsion of claim 3 in which the filler is colloidal silica.

Claim 6

The emulsion of claim 1 in which the reactive groups of (1) are (a) hydrogen.

Claim 7

The emulsion of claim 1 in which the reactive groups of (1) are (b) OR, where R is hydrogen, monovalent hydrocarbon radical or substituted hydrocarbon radical having less than 7 carbon atoms, functionalized hydrocarbon radicals, nitrogen compounds of the formula --N═CR' or --NR'COR' or --NR' 2 , where R' is either hydrogen or monovalent hydrocarbon radicals having less than 7 carbon atoms.

Claim 8

The emulsion of claim 6 in which the reactive groups of (1) are of the formula --NR'COR'.

Claim 9

The emulsion of claim 1 in which the reactive groups of (1) are (c) groups of the formula --NR 2 or --NCOR where R is hydrogen, monovalent hydrocarbon radical or substituted hydrocarbon radical having less than 7 carbon atoms, functionalized hydrocarbon radicals, nitrogen compounds of the formula --N═CR' 2 or --NR'COR' or --NR' 2 , where R' is either hydrogen or monovalent hydrocarbon radicals having less than 7 carbon atoms.

Claim 10

The emulsion of claim 1 in which the reactive groups of (1) are (d) halogen.

Claim 11

The emulsion of claim 1 in which the crosslinker (3) is (e) silane of the formula R x SiY 4-x where Y is selected from the group consisting of hydrogen, halogen, and OR', and R, R' and x are as defined above.

Claim 12

The emulsion of claim 1 in which the crosslinker (3) is (f) silazane of the formula R x Si(NR' 2 ) 4-x , where where R is hydrogen, monovalent hydrocarbon radical or substituted hydrocarbon radical having less than 7 carbon atoms, functionalized hydrocarbon radicals, nitrogen compounds of the formula --N═CR' 2 or --NR'COR' or --NR' 2 , where R' is either hydrogen or monovalent hydrocarbon radicals having less than 7 carbon atoms, and x is either 0 or 1.

Claim 13

The emulsion of claim 11 in which R is of the formula --NR'COR'.

Claim 14

The emulsion of claim 1 in which (1) is a mixture of molecules in which some molecules are polydiorganosiloxanes having 2 reactive groups and the remainder of the molecules are polydiorganosiloxanes in which there are 3 or more reactive groups, the crosslinker (3) being an optional ingredient.

Claim 15

An aqueous silicone emulsion stabilized cationically or nonionically or by a combination of both which yields an elastomer upon removal of the water comprising the product obtained by (A) mixing (1) 100 parts by weight of cationically or nonionically stabilized polydiorganosiloxane emulsion, the polydiorganosiloxane having at least two reactive groups per molecule, the organo radicals being monovalent hydrocarbon radicals containing less than 7 carbon atoms per radical or 2-(perfluoroalkyl)ethyl radicals having less than 7 carbon atoms per radical, the reactive groups selected from the atoms or radicals consisting of (a) hydrogen, (b) OR, where R is hydrogen, monovalent hydrocarbon radical or substituted hydrocarbon radical having less than 7 carbon atoms, functionalized hydrocarbon radicals, nitrogen compounds of the formula --N═CR' 2 or --NR'COR' or --NR' 2 , where R' is either hydrogen or monovalent hydrocarbon radicals having less than 7 carbon atoms, (c) groups of the formula --NR 2 or --NCOR, where R is as defined above, and (d) halogen, (2) from 0.1 to 10 parts by weight of tin (II) catalyst, and when (1) has only 2 reactive groups per molecule. (3) sufficient crosslinker on a stoichiometric basis selected from the group consisting of (e) silane of the formula R x SiY 4-x where Y is selected from the group consisting of hydrogen, halogen, and OR', and R and R' are as defined above, and x is either 0 or 1; and (f) silazane of the formula R x Si(NR' 2 ) 4-x , where R, R' and x are as defined above; then (B) aging at room temperature for sufficient time to allow crosslinking of the polydiorganosiloxane, the emulsion being able to be filled with either reinforcing or extending fillers or pigments or combinations thereof, the emulsion yielding an elastomer upon evaporation of the water.

Claim 16

An aqueous silicone emulsion stabilized cationically or nonionically or by a combination of both which yields an elastomer upon removal of the water comprising the product obtained by (A) mixing (1) 100 parts by weight of cationically or nonionically stabilized polydiorganosiloxane emulsion, the polydiorganosiloxane having at least two reactive groups per molecule, the organo radicals being monovalent hydrocarbon radicals containing less than 7 carbon atoms per radical or 2-(perfluoroalkyl)ethyl radicals having less than 7 carbon atoms per radical, the reactive groups selected from the atoms or radicals consisting of (a) hydrogen, (b) OR, where R is hydrogen, monovalent hydrocarbon radical or substituted hydrocarbon radical having less than 7 carbon atoms, functionalized hydrocarbon radicals, nitrogen compounds of the formula --N═CR' 2 or --NR'COR' or --NR' 2 , where R' is either hydrogen or monovalent hydrocarbon radicals having less than 7 carbon atoms, (c) groups of the formula --NR 2 or --NCOR, where R is as defined above, and (d) halogen, (2) from 0.1 to 10 parts by weight of tin (II) catalyst, and when (1) has only 2 reactive groups per molecule. (3) sufficient crosslinker on a stoichiometric basis selected from the group consisting of (e) silane of the formula R x SiY 4-x where Y is selected from the group consisting of hydrogen, halogen, and OR', and R and R' are as defined above, and x is either 0 or 1; and (f) silazane of the formula R x Si(NR' 2 ) 4-x , where R, R' and x are as defined above; then (B) aging at room temperature for sufficient time to allow crosslinking of the polydiorganosiloxane, the emulsion being able to be filled with either reinforcing or extending fillers or pigments or combinations thereof, the emulsion yielding an elastomer upon evaporation of the water.

Claim 17

A process for producing an aqueous silicone emulsion stabilized cationically or nonionically or by a combination of both which yields an elastomer upon removal of the water comprising (A) mixing (1) 100 parts by weight of cationically or nonionically stabilized polydiorganosiloxane emulsion, the polydiorganosiloxane having at least two reactive groups per molecule, the organo radicals being monovalent hydrocarbon radicals containing less than 7 carbon atoms per radical or 2-(perfluoroalkyl)ethyl radicals having less than 7 carbon atoms per radical, the reactive groups selected from the atoms or radicals consisting of (a) hydrogen, (b) OR, where R is hydrogen, monovalent hydrocarbon radical or substituted hydrocarbon radical having less than 7 carbon atoms, functionalized hydrocarbon radicals, nitrogen compounds of the formula --N═CR' 2 or --NR'COR' or --NR' 2 , where R' is either hydrogen or monovalent hydrocarbon radicals having less than 7 carbon atoms, (c) groups of the formula --NR 2 or --NCOR, where R is as defined above, and (d) halogen, (2) from 0.1 to 10 parts by weight of tin (II) catalyst, and when (1) has only 2 reactive groups per molecule, (3) sufficient crosslinker on a stoichiometric basis selected from the group consisting of (e) silane of the formula R x SiY 4-x where Y is selected from the group consisting of hydrogen, halogen, and OR', and R and R' are as defined above, and x is either 0 or 1; and (f) silazane of the formula R x Si(NR' 2 ) 4-x , where R, R' and x are as defined above; then (B) aging at room temperature for sufficient time to allow crosslinking of the polydiorganosiloxane, to give an emulsion being able to be filled with either reinforcing or extending fillers or pigments or combinations thereof, the emulsion yielding an elastomer upon evaporation of the water.

Claim 18

A process for producing an aqueous silicone emulsion stabilized cationically or nonionically or by a combination of both which yields an elastomer upon removal of the water comprising (A) mixing (1) 100 parts by weight of cationically or nonionically stabilized polydiorganosiloxane emulsion, the polydiorganosiloxane having at least two reactive groups per molecule, the organo radicals being monovalent hydrocarbon radicals containing less than 7 carbon atoms per radical or 2-(perfluoroalkyl)ethyl radicals having less than 7 carbon atoms per radical, the reactive groups selected from the atoms or radicals consisting of (a) hydrogen, (b) OR, where R is hydrogen, monovalent hydrocarbon radical or substituted hydrocarbon radical having less than 7 carbon atoms, functionalized hydrocarbon radicals, nitrogen compounds of the formula --N═CR' 2 or --NR'COR' or --NR' 2 , where R' is either hydrogen or monovalent hydrocarbon radicals having less than 7 carbon atoms, (c) groups of the formula --NR 2 or --NCOR, where R is as defined above, and (d) halogen, (2) from 0.1 to 10 parts by weight of tin (II) catalyst, and when (1) has only 2 reactive groups per molecule, (3) sufficient crosslinker on a stoichiometric basis selected from the group consisting of (e) silane of the formula R x SiY 4-x where Y is selected from the group consisting of hydrogen, halogen, and OR', and R and R' are as defined above, and x is either 0 or 1; and (f) silazane of the formula R x Si(NR' 2 ) 4-x , where R, R' and x are as defined above; then (B) aging at room temperature for sufficient time to allow crosslinking of the polydiorganosiloxane, to give an emulsion being able to be filled with either reinforcing or extending fillers or pigments or combinations thereof, the emulsion yielding an elastomer upon evaporation of the water.

Claim 19

The method of claim 15 in which (1) is emulsified, then (2) is added to the emulsion.

Claim 20

The method of claim 15 in which (1) and (2) are mixed and then emulsified.

Claim 21

The method of claim 15 in which (1) is emulsified, then (2) and (3) are added to the emulsion.

Claim 22

The method of claim 15 in which (1) and (2) are mixed together, emulsified, and then (3) is added.

Claim 23

The method of claim 15 in which (1) and (3) are mixed together, emulsified, and then (2) is added.

Claim 24

The method of claim 15 in which filler is added to the emulsion (1) before the addition of (2) or (3).

Claim 25

The method of claim 16 in which a reinforcing or extending filler is added to (1) before emulsification, the filler being one which does not adversely react in the emulsion.

Claim 26

The method of claim 17 in which a reinforcing or extending filler is added to the mixture of (1) and (2) before emulsification, the filler being one which does not adversely react in the emulsion.

Claim 27

The method of claim 20 in which a reinforcing or extending filler is added to the mixture of (1) and (3) before emulsification, the filler being one which does not adversely react in the emulsion.