公开(公告)号：US3668180A

公开(公告)日：1972-06-06

申请号：US3668180D

申请日：1969-10-24

Applicant: STAUFFER WACKER SILICONE CORP

Inventor： BRENNAN JAMES LEO ,  FORD GERALD PAUL

IPC: C08G77/18 ,  C08F11/04

CPC classification number: C08G77/18

Abstract: A water repellent composition comprising alkoxylated and partially hydrolyzed organopolysiloxane resins and a process for preparing the same. The process for preparing the alkoxyorganopolysiloxane resin comprises mixing an organohalosilane with a hydrocarbon solvent, water and a lower aliphatic alcohol; introducing the reactants into a packed side-arm reactor; maintaining the solution in said reactor at a temperature of from about -10* to 10* C. to alkoxylate and partially hydrolyze said organohalosilane, continuously transferring the alkoxylated and partially hydrolyzed solution from said side-arm reactor into a second reactor containing additional solvent maintained at reflux temperature until said organohalosilane is hydrolyzed to a level of from 40 to 80 percent; neutralizing the solution and recovering the alkoxyorganopolysiloxane resin solution.

Abstract translation: 包含烷氧基化和部分水解的有机聚硅氧烷树脂的防水组合物及其制备方法。