Patent ID: 9701879
Date: 2017-07-11
CPC Classifications: C04B,C08G,C09D,C09K,D06M

Claim:
1. A process of preparing a siloxane copolymer by: 1) reacting i) a 1-alkene containing from 8 to 12 carbon atoms; and ii) a cyclic siloxane having the formula: wherein R is an alkyl radical having 1 to 3 carbon atoms and c is equal to or higher than 4; in the presence of a platinum catalyst so as to form a cyclic copolymer having the formula: wherein R′ is an alkyl group having from 8 to 12 carbon atoms and a+b=c; and 2) removing the unreacted alkene and volatile cyclic siloxanes from the reaction mixture and where the molar ratio of alkene:cyclic siloxanes is ≧1.5; wherein the cyclic copolymer has a Volatile Organic Content according to ASTM 5095 below 100 g/l.