Patent ID: 7799870

Claim:
An alkoxy-modified silsesquioxane comprising one or more compounds selected from the group consisting of alkoxy-modified silsesquioxanes having the formula and mixtures thereof, wherein w, x and y represent mole fractions, y does not equal zero, either w or x but not both can be zero, and w+x+y=1.00, wherein R 1 , R 2 and R 3 are selected from the group consisting of (i) H or an alkyl groups having one to about 20 carbon atoms, (ii) cycloalkyl groups having 3 to about 20 carbon atoms, (iii) alkylaryl groups having 7 to about 20 carbon atoms, and (iv) R 5 X, wherein X is selected from the group consisting of Cl, Br, SH, S a R 6 , NR 6 2 , OR 6 , CO 2 H, CO 2 R 6 , OH, olefins, epoxides, amino groups, vinyl groups, acrylates and methacrylates, wherein a=1 to about 8, R 5 is selected from the group consisting of alkylene groups having one to about 20 carbon atoms, cycloalkylene groups having 3 to about 20 carbon atoms, and R 4 and R 6 are selected from the group consisting of alkyl groups having one to about 5 carbon atoms, cycloalkyl groups having 3 to about 20 carbon atoms, and alkylaryl groups having 7 to about 20 carbon atoms, wherein the alkoxy-modified silsesquioxanes consist essentially of a mixture of alkoxy-modified silsesquioxanes having an open structure with a reactive alkoxysilyl group, and are essentially free of closed caged polyhedral organosilsesquioxanes, and wherein the mixture of alkoxy-modified silsesquioxanes liberates about 0.05% to about 10% by weight alcohol when treated by substantially total acid hydrolysis.