Silphenylenesilalkylene polymer, methods for preparing same, and coating composition

摘要

A silphenylenesilalkylene polymer containing principal chains having the general formula: <CHEM> wherein each R is independently a monovalent hydrocarbon group having 1 to 10 carbon atoms, with the proviso that at least 20% of the R groups are phenyl; R<1> is an alkylene group or an alkyleneoxyalkylene group having 2 to 10 carbon atoms; Ph is a substituted or unsubstituted para-phenylene ring; and x and y are integers having a value of at least 1; and wherein the polymer has a weight average molecular weight of at least 1,000 and is a solid at 30 DEG C.