Patent ID: 8865845
Filing Date: 2014-10-21
Classification: C08G,G03F

Abstract:
1. A method for producing a silsesquioxane-titania hybrid polymer, comprising the steps of: (a) combining an organo-titanate with a silsesquioxane polymer by either (i) adding a solution of an organo-titanate in an aprotic solvent to a solution of a silsesquioxane polymer in an aprotic solvent to form an intermediate, the organo-titanate having the formula (RO) 4 Ti, wherein R is an alkyl, aryl or alkaryl group having from 1-20 carbons and optionally containing one or more heteroatoms, the silsesquioxane polymer having a weight average molecular weight of at least 2500 per mole or (ii) adding a solution of a silsesquioxane polymer in an aprotic solvent to a solution of an organo-titanate in an aprotic solvent to form an intermediate, the organo-titanate having the formula (RO) 4 Ti, wherein R is an alkyl, aryl or alkaryl group having from 1-20 carbons and optionally containing one or more heteroatoms and the silsesquioxane polymer has a weight average molecular weight of at least 2500 grams per mole; and (b) adding water to the intermediate to form the silsesquioxane-titania hybrid polymer having titania domains of less than about 5 nm.