Patent ID: 8916645

Claim:
A POSS polymer compound of formula I [A x ] p [B y ] q Formula I wherein: A x is a POSS entity including closed-caged T8, T10, or T12 or an open-cage T8, T10, or T12 or another non-POSS monomer, having x number of A-type functional groups selected from hydridosilyl (Si—H), vinyl, hydroxyl or alkoxysilyl, with all functionality being the same for a given monomer; x is an integer of 2 or more; p is an integer of 2 or more; and B y is a POSS entity including closed-caged T8, T10, or T12 or an open-cage T8, T10, or T12, or another non-POSS monomer, having y number of B-type functional groups that are chosen to react with the A-type functional groups and are selected from vinyl, hydridosilyl (Si—H), alkoxysilyl or hydroxyl, with all functionality being the same for a given monomer; y is an integer of 3 or more; q is an integer of 2 or more; and when present, the non-POSS monomer is H(SiR 2 O) m SiR 2 H, vinyl-(SiR 2 O) m SiR 2 -vinyl, Si(OSiR 2 H) 4 , HSiR 2 CH 2 CH 2 SiR 2 H, H(Si(OR) 2 O) m Si(OR) 2 H, or vinyl(Si(OR) 2 O) m Si(OR) 2 vinyl, where R is C 1 -C 5 alkyl or C 6 -C 14 aryl, and m is 1 or more; provided that if A and B are both POSS entities, then x does not equal y; and provided that if A and B are both POSS entities, they are not identical entities; and provided that one of A or B must be a POSS entity; and wherein the polymer contains curable groups for further reaction, which curable groups are either initially present or have been added by a capping agent.