Synonyms:2-Propenoic acid,2-methyl-,polymer with butyl 2-methyl-2-propenoate,butyl 2-propenoate and methyl 2-methyl-2-propenoate;2-Propenoic acid,2-methyl-,polymer with butyl 2-methyl-2-propenoate,butyl 2-propenoate and methyl 2-methyl-2-propenoic acid;