Claims
- 1. A composition comprising a mixture of an amine functional silicone and a trisiloxane polyether, the amine functional silicone having the formula:
- R.sub.3-z 'QzSiO�R.sub.2 'SiO!x�R'QSiO!ySiQzR.sub.3-z '
- wherein R' denotes an alkyl group of 1 to 4 carbons or a phenyl group with the proviso that at least 50 percent of the total number of R' groups are methyl; Q denotes an amine functional substituent of the formula--R"Z in which R" is a divalent alkylene radical of 3 to 6 carbon atoms and Z is a monovalent radical selected from the group consisting of --NR.sub.2 '", and --NR'" (CH.sub.2)nNR.sub.2 '"; wherein R'" denotes hydrogen or an alkyl group of 1 to 4 carbons; and n is a positive integer having a value of from 2 to 6; z has a value of 0 or 1; x has an average value of 25 to 10,000; y has an average value of 0 to 100 when z is 1, y has an average value of 1 to 100 when z is 0; with the proviso that in all cases y has an average value that is not greater than one tenth the average value of x; the trisiloxane polyether having the formula: ##STR5## wherein R.sup.a is an alkyl group of one to six carbon atoms; R.sup.b is a linking group and a radical selected from the group consisting of --O--, --C.sub.m H.sub.2m --, --C.sub.m H.sub.2m O--, --C.sub.m H.sub.2m-2 --, --C.sub.m H.sub.2m-2 O--and --C.sub.m H.sub.2m CO.sub.2 --; R.sup.c is a terminating radical selected from the group consisting of hydrogen, an aryl group, an acyl group, and an alkyl group of one to six carbon atoms; m is an integer having a value two to eight; p and s are each integers having values such that the oxyalkylene segment --(C.sub.2 H.sub.4 O).sub.p --(C.sub.3 H.sub.6 O).sub.s -- has a molecular weight in the range of 250 to 5,000; the oxyalkylene segment having fifty to one hundred mole percent of oxyethylene units --(C.sub.2 H.sub.4 O).sub.p -- and zero to fifty mole percent of oxypropylene units --(C.sub.3 H.sub.6 O).sub.s --.
- 2. A composition according to claim 1 in which R.sup.a and the terminating radical R.sup.c are methyl groups; m is three or four; and the values of p and s are such as to provide a molecular weight of the oxyalkylene segment --(C.sub.2 H.sub.4 O).sub.p --(C.sub.3 H.sub.6 O).sub.s -- of between 250 to 1000.
- 3. A composition according to claim 1 in which the linking group R.sup.b is the radical --(CH.sub.2).sub.3 --O--.
- 4. A composition according to claim 1 in which the amine functional silicone constitutes from five to fifty percent by weight of the mixture.
- 5. A composition according to claim 1 in which the mixture includes a polydiorganosiloxane gum having the average unit formula R.sub.a SiO.sub.4-a/2 in which each R substituent is a monovalent radical selected from the group consisting of a methyl radical, a vinyl radical, a phenyl radical, and a 3,3,3-trifluoropropyl radical, a has an average value of 1.95-2.005 inclusive, at least ninety percent of the total number of R substituents being methyl radicals, the molecules of the polydiorganosiloxane gum being terminated by a substituent selected from the group consisting of silanols, alkoxys, and R.sub.3 SiO.sub.0.5, in which R is the same as defined above.
Parent Case Info
This is a divisional of copending application Ser. No. 07/972,342 filed on Nov. 6, 1992.
US Referenced Citations (5)
Divisions (1)
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Number |
Date |
Country |
Parent |
972342 |
Nov 1992 |
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