Acetic acid, (4-ethenylphenoxy)-, 1,1-dimethylethyl ester, polymer with 4-ethenylphenol p-(t-Butoxycarbonylmethyloxy)styrene-p-hydroxystyrene copolymer p-(tert-butoxycarbonylmethoxy)styrene-4-hydroxystyrene copolymer p-(tert-Butoxycarbonylmethyloxy)styrene-p-hydroxystyrene copolymer p-Hydroxystyrene-p-(tert-butoxy-carbonylmethoxy)styrene copolymer p-Hydroxystyrene-tert-butoxycarbonylmethyloxystyrene copolymer p-tert-Butoxycarbonylmethoxystyrene-p-hydroxystyrene copolymer Phenol, 4-ethenyl-, polymer with 1,1-dimethylethyl (4-ethenylphenoxy)acetate t-Butoxycarbonylmethoxystyrene-4-vinylphenol copolymer tert-Butoxycarbonylmethoxystyrene-p-hydroxystyrene copolymer tert-Butoxycarbonylmethyloxystyrene-p-hydroxystyrene copolymer tert-Butyl 4-vinylphenoxyacetate-4-vinylphenol copolymer