专利内容由知识产权出版社提供
专利名称：Process for producing the viscosity, long
shelf life silicone resin solutions
发明人：Lothar Heinrich,Helga Sadowski,Gunter
Beuschel
申请号：US07/9272申请日：19910130公开号：US05652302A公开日：19970729
摘要：The invention is an improvement in a process for producing silicone resins, toproduce a silicone resin that has a high dynamic viscosity of at 293° K. of from about 40 toabout 300 mPas, a long shelf life, and a siloxane content of from about 50 to about 70 ma%, by the condensation of oligomeric siloxanes in concentrated solutions, by carrying outthe condensation by heating at reflux and in the presence of a metal containing catalystand dicarboxylic acid.
申请人：HUELS SILICONE GMBH
代理机构：Schweitzer Cornman & Gross
更多信息请下载全文后查看
