Patent ID: 9732191
Date: 2017-08-15
CPC Classifications: C08G

Claim:
1. A method for producing capped MQ resins, the method comprising the steps of combining an MQ-based silicone resin having the formula: R 1 n(RO) b SiO ((4-n-b)/2) , where each R 1 is monovalent and independently selected from hydrogen, hydrocarbyl, oximo, epoxide, carboxyl, ether, polyether, amide, and alkyl amino groups, which R1 moieties may be the same or different, with the proviso that at least sixty mole percent of the R 1 groups are hydrocarbyl, subscript n is 1.1 to 1.6, subscript b has a value such that group (RO) is 1 weight % to 20 weight % of the MQ-based silicone resin, and each R is hydrogen or an alkyl group of 1 to 4 carbon atoms; an alkenyl functional halosilane capping agent having the general formula R 5 R 4 2 SiR 3 , where each R 3 is a halogen atom, where each R 4 is H, a siloxy group or a monovalent hydrocarbyl group, and where each R 5 is an alkenyl group; and a polar organic compound.