Curable organopolysiloxane composition

Claim 2

A curable composition comprising: (i) an amine-functional organopolysiloxane consisting of a plurality of independently selected units of the formula ##STR35## wherein X is an amine-functional organic group bearing at least one --NHR" group, in which R" is hydrogen or an alkyl radical having 1-6 carbon atoms, R is a group selected from alkyl, cycloalkyl, haloalkyl, aromatic or haloaromatic radicals, a has a value of 0, 1, 2, or 3, b has a value of 0, 1 or 2, and the sum (a+b) is less than 4, there being on average at least two X groups per molecule of said amine-functional organopolysiloxane; and (ii) an acryl-functional organopolysiloxane consisting of a plurality of independently selected units of the formula ##STR36## wherein Z is an acryl-functional organic group bearing at least one group selected from acryloxy, methacryloxy or acrylamide radicals, R has been previously defined, c has a value of 0, 1, 2, or 3, d has a value of 0, 1 or 2, and the sum (c+d) is less than 4, there being on average at least two Z groups per molecule of said acryl-functional organo-polysiloxane, and at least one of (i) and (ii) has an average of more than two of said X groups and said Z groups, respectively, per molecule.

Claim 3

The composition of claim 1, wherein said R groups of components (i) and (ii) are independently selected from methyl, phenyl or 3,3,3-trifluoropropyl radicals.

Claim 4

The composition of claim 2, wherein said X group is represented by the formula --R'(NHCH.sub.2 CH.sub.2).sub.g NR"H in which R' is a divalent hydrocarbyl group having 3 to 6 carbon atoms, R" is selected from hydrogen or an alkyl radical having 1 to 6 carbon atoms and g is an integer having a value of zero to 4.

Claim 5

The composition of claim 3, wherein said Z group is represented by the formula --R"'OA in which R"' is a divalent hydrocarbon radical having 1 to 18 carbon atoms, or the corresponding oxyalkylene radical, and A is the radical ##STR37## in which B is selected from hydrogen or the methyl radical.

Claim 6

The composition of claim 3, wherein said Z group is represented by the formula ##STR38## in which R' is a divalent hydrocarbon group, m is an integer between 1 and 10, k is 0, 1, 2, 3, or 4, A is the group ##STR39## and B is selected from hydrogen or the methyl radical.

Claim 7

The composition of claim 3, wherein said Z group is selected from groups represented by the formulae --DNHG or --DNGDNHG in which D is a divalent saturated hydrocarbon radical having from 1 to 6 carbon atoms and G is the group ##STR40## where B is selected from hydrogen or the methyl radical and m' is 2, 3 or 4.

Claim 8

The composition of claim 3, wherein said Z group is represented by the formula --QNAQ'NAR"" in which Q and Q' denote divalent hydrocarbon radicals, R"" is hydrogen or a monovalent hydrocarbon radical, A is the group ##STR41## and B is selected from hydrogen or the methyl radical.

Claim 9

The composition of claim 3, wherein said Z group is represented by the formula ##STR42## in which R""' is a divalent hydrocarbon group having 3 to 6 carbon atoms, A is the group ##STR43## and B is selected from hydrogen or the methyl radical.

Claim 10

The composition of claim 8, wherein said R""' group is trimethylene.

Claim 11

The composition of claim 7, wherein said Q group is --CH 2 CH(CH 3 )CH 2 --, said Q' group is --CH 2 CH 2 -- and said R"" group is hydrogen.

Claim 12

The composition as delineated in claim 1, wherein said organopolysiloxane (i) is selected from linear copolymers having the average structure ##STR44## in which the average value of x can vary from zero to about 1000 and the average value of y can vary from 2 to about 100; and said organopolysiloxane (ii) is selected from linear copolymers having the average structure ##STR45## in which the average value of x' can vary from about 5 to about 500 and the average value of y' can vary from 2 to about 30.

Claim 13

The composition of claim 11, wherein said R groups of components (i) and (ii) are independently selected from methyl, phenyl or 3,3,3-trifluoropropyl radicals.

Claim 14

The composition of claim 12, wherein said X group is represented by the formula --R'(NHCH.sub.2 CH.sub.2).sub.g NR"H in which R' is a divalent hydrocarbyl group having 3 to 6 carbon atoms, R" is selected from hydrogen or an alkyl radical having 1 to 6 carbon atoms and g is an integer having a value of zero to 4.

Claim 15

The composition of claim 13, wherein said Z group is represented by the formula --R"'OA in which R'" is a divalent hydrocarbon radical having 1 to 18 carbon atoms, or the corresponding oxyalkylene radical, and A is the radical ##STR46## in which B is selected from hydrogen or the methyl radical.

Claim 16

The composition of claim 13, wherein said Z group is represented by the formula ##STR47## in which R' is a divalent hydrocarbon group, m is an integer between 1 and 10, k is 0, 1, 2, 3, or 4, A is the group ##STR48## and B is selected from hydrogen or the methyl radical.

Claim 17

The composition of claim 13, wherein said Z group is selected from groups represented by the formulae --DNHG or --DNGDNHG in which D is a divalent saturated hydrocarbon radical having from 1 to 6 carbon atoms and G is the group ##STR49## where B is selected from hydrogen or the methyl radical and m' is 2, 3 or 4.

Claim 18

The composition of claim 13, wherein said Z group is represented by the formula --QNAQ'NAR"" in which Q and Q' denote divalent hydrocarbon radicals, R"" is hydrogen or a monovalent hydrocarbon radical, A is the group ##STR50## and B is selected from hydrogen or the methyl radical.

Claim 19

The composition of claim 13, wherein said Z group is represented by the formula ##STR51## in which R""' is a divalent hydrocarbon group having 3 to 6 carbon atoms, A is the group ##STR52## and B is selected from hydrogen or the methyl radical.

Claim 20

The composition of claim 18, wherein said R""' group is trimethylene, said R group is methyl and said R' group is isobutylene.

Claim 21

The composition of claim 17, wherein said Q group is --CH 2 CH(CH 3 )CH 2 --, said Q' group is --CH 2 CH 2 --, said R"" group is hydrogen, said R group is methyl and said R' group is isobutylene.

Claim 22

A process for preparing a cured organopolysiloxane material, comprising: reacting (i) an amine-functional organopolysiloxane consisting of a plurality of independently selected units of the formula ##STR53## wherein X is an amine-functional organic group bearing at least one --NHR" group, in which R" is hydrogen or an alkyl radical having 1-6 carbon atoms, R is a group selected from alkyl, cycloalkyl, haloalkyl or aromatic radicals, a has a value of 0, 1, 2, or 3, b has a value of 0, 1 or 2, and the sum (a+b) is less than 4, there being on average at least two X groups per molecule of said amine-functional organopolysiloxane with (ii) an acryl-functional organopolysiloxane consisting of a plurality of independently selected units of the formula ##STR54## wherein Z is an acryl-functional organic group bearing at least one group selected from acryloxy, methacryloxy or acrylamide radicals, R has been previously defined, c has a value of 0, 1, 2, or 3, d has a value of 0, 1 or 2, and the sum (c+d) is less than 4, there being on average at least two Z groups per molecule of said acryl-functional organopolysiloxane, and at least one of (i) and (ii) has an average of more than two of said X groups and said Z groups, respectively, per molecule.

Claim 23

A process for preparing a cured organopolysiloxane material, comprising: reacting (i) an amine-functional organopolysiloxane consisting of a plurality of independently selected units of the formula ##STR53## wherein X is an amine-functional organic group bearing at least one --NHR" group, in which R" is hydrogen or an alkyl radical having 1-6 carbon atoms, R is a group selected from alkyl, cycloalkyl, haloalkyl or aromatic radicals, a has a value of 0, 1, 2, or 3, b has a value of 0, 1 or 2, and the sum (a+b) is less than 4, there being on average at least two X groups per molecule of said amine-functional organopolysiloxane with (ii) an acryl-functional organopolysiloxane consisting of a plurality of independently selected units of the formula ##STR54## wherein Z is an acryl-functional organic group bearing at least one group selected from acryloxy, methacryloxy or acrylamide radicals, R has been previously defined, c has a value of 0, 1, 2, or 3, d has a value of 0, 1 or 2, and the sum (c+d) is less than 4, there being on average at least two Z groups per molecule of said acryl-functional organopolysiloxane, and at least one of (i) and (ii) has an average of more than two of said X groups and said Z groups, respectively, per molecule.

Claim 24

The process according to claim 21, wherein said R groups of components (i) and (ii) are independently selected from methyl, phenyl or 3,3,3-trifluoropropyl radicals.

Claim 25

The process according to claim 22, wherein said X group is represented by the formula --R'(NHCH.sub.2 CH.sub.2).sub.g NR"H in which R' is a divalent hydrocarbyl group having 3 to 6 carbon atoms, R" is selected from hydrogen or an alkyl radical having 1 to 6 carbon atoms and g is an integer having a value of zero to 4.

Claim 26

The process according to claim 23, wherein said Z group is represented by the formula --QNAQ'NAR"" in which Q and Q' denote divalent hydrocarbon radicals, R"" is hydrogen or a monovalent hydrocarbon radical, A is the group ##STR55## and B is selected from hydrogen or the methyl radical.

Claim 27

The process according to claim 23, wherein said Z group is represented by the formula ##STR56## in which R""' is a divalent hydrocarbon group having 3 to 6 carbon atoms, A is the group ##STR57## and B is selected from hydrogen or the methyl radical.

Claim 28

The process according to claim 25, wherein said R""' group is trimethylene and said R group is methyl.

Claim 29

The process according to claim 24, wherein said Q group is --CH 2 CH(CH 3 )CH 2 --, said Q' group is --CH 2 CH 2 --, said R"" group is hydrogen and said R group is methyl.

Claim 30

The process according to claim 21, wherein said organopolysiloxane (i) is selected from linear copolymers having the average structure ##STR58## in which the average value of x can vary from zero to about 1000 and the average value of y can vary from 2 to about 100; and said organopolysiloxane (ii) is selected from linear copolymers having the average structure ##STR59## in which the average value of x' can vary from about 5 to about 500 and the average value of y' can vary from 2 to about 30.

Claim 31

The process according to claim 28, wherein said R groups of components (i) and (ii) are independently selected from methyl, phenyl or 3,3,3-trifluoropropyl radicals.

Claim 32

The process according to claim 29, wherein said X group is represented by the formula --R'(NHCH.sub.2 CH.sub.2).sub.g NR"H in which R' is a divalent hydrocarbyl group having 3 to 6 carbon atoms, R" is selected from hydrogen or an alkyl radical having 1 to 6 carbon atoms and g is an integer having a value of zero to 4.

Claim 33

The process according to claim 30, wherein said Z group is represented by the formula --QNAQ'NAR"" in which Q and Q' denote divalent hydrocarbon radicals, R"" is hydrogen or a monovalent hydrocarbon radical, A is the group ##STR60## and B is selected from hydrogen or the methyl radical.

Claim 34

The process according to claim 30, wherein said Z group is represented by the formula ##STR61## in which R""' is a divalent hydrocarbon group having 3 to 6 carbon atoms, A is the group ##STR62## and B is selected from hydrogen or the methyl radical.

Claim 35

The process according to claim 32, wherein said Q group is --CH 2 CH(CH 3 )CH 2 --, said Q' group is --CH 2 CH 2 --, said R"" group is hydrogen, said R group is methyl and said R' group is isobutylene.

Claim 36

The process according to claim 31, wherein said R""' group is trimethylene, said R group is methyl and said R' group is isobutylene.

Claim 37

The composition of claim 1, further comprising an inhibiting amount of a volatile acid.

Claim 38

The composition of claim 11, further comprising an inhibiting amount of a volatile acid.

Claim 39

The composition of claim 17, further comprising an inhibiting amount of a volatile acid.

Claim 40

The composition of claim 18, further comprising an inhibiting amount of a volatile acid.

Claim 41

A cured organopolysiloxane reaction product of the composition defined by claim 1.

Claim 42

A cured organopolysiloxane reaction product of the composition defined by claim 2.

Claim 43

A cured organopolysiloxane reaction product of the composition defined by claim 3.

Claim 44

A cured organopolysiloxane reaction product of the composition defined by claim 7.

Claim 45

A cured organopolysiloxane reaction product of the composition defined by claim 8.

Claim 46

A cured organopolysiloxane reaction product of the composition defined by claim 11.

Claim 47

A cured organopolysiloxane reaction product of the composition defined by claim 12.

Claim 48

A cured organopolysiloxane reaction product of the composition defined by claim 13.

Claim 49

A cured organopolysiloxane reaction product of the composition defined by claim 17.

Claim 50

A cured organopolysiloxane reaction product of the composition defined by claim 18.