Partial hydrolyzates containing hydrolzable moieties from organosilane compounds

摘要: Disclosed is an ungelled partial hydrolysis product of organosilicon-containing material, a method for preparing the product, and composition such as coating containing product. The material preparation has average functionality based on easily hydrolyzable Y groups attached to silicon atoms greater than or equal 2.4. contains 10 mole percent at least one organosilane compound corresponding formula, R--Si--Y 3 . In aforesaid R represents hydrogen C 1 -C group joined Si through Si--C linkage. Each in formula group. prepared by hydrolyzing portion with controlled amount water. water employed determined according following (E.sub.1,2 ×0.5)+(E.sub.3,4 ×Z)=W, wherein W total moles H 2 O calculated equivalents employed, E ,2 number from compounds two groups, ,4 three four Z range 0.023 0.43.