glycidyl (meth)acrylate and the like, vinyl carboxylates such as vinyl acetate and vinyl propionate and the like, vinyl cyanide compounds such as (meth)acrylonitrile and ??-chloroacrylonitrile, unsaturated oxetane carboxylates such as 3-methyl-3-(meth)acryloxymethyloxetane, 3-ethyl-3-(meth)acryloxymethyloxetane, 3-methyl-3-(meth)acryloxyethyloxetane, 3-ethyl-3-(meth)acryloxyethyloxetane, and the l