Patent ID: 8575383

Claim:
A silsesquioxane compound comprising organic groups each directly attached to a silicon atom of the compound, wherein at least one of the organic groups is an organic group having one or more urethane bonds and one (meth)acryloyloxy group, and the organic group having one or more urethane bonds and one (meth)acryloyloxy group is an organic group represented by the following formula (A): wherein R 1 represents a hydrogen atom or a methyl group, R 2 represents a C 1-10 divalent hydrocarbon group, R 3 represents a C 1-10 divalent hydrocarbon group, and Y represents wherein R 4 represents a substituted or unsubstituted C 1-6 monovalent hydrocarbon group; or wherein R 5 represents a substituted or unsubstituted C 1-6 monovalent hydrocarbon group.