英文名称:Copolymer of vinyl-alcohol and vinyl acetate partially acetilized with 4-(2-(4-formylphenyl)ethenyl)-1-methylpyridinium methylsulfate; Acetic acid ethenyl ester, homopolymer, hydrolyzed, cyclic acetal with 4-(2-(4-formylphenyl)ethenyl)-1-methylpyridinium, Me sulfate; Acetic acid ethenyl ester, homopolymer, hydrolyzed, cyclic acetal with 4-(2-(4-formylphenyl)ethenyl)-1-methylpyridinium M