1-Propene, 2-methyl-, polymer with (2Z)-2-butenedioic acid 1-Propene, 2-methyl-, polymer with (Z)-2-butenedioic acid 2-Butenedioic acid (2Z)-, polymer with 2-methyl-1-propene 2-Butenedioic acid (Z)-, polymer with 2-methyl-1-propene Isobutene-maleic acid copolymer Isobutene-maleic acid polymer Isobutylene-maleic acid copolymer Isobutylene-maleic acid polymer KI 210 Maleic acid-isobutene copolymer Maleic acid-isobutene polymer Maleic acid-isobutylene copolymer Maleic acid-isobutylene polymer Maleic acid, polymer with 2-methylpropene Propene, 2-methyl-, polymer with maleic acid T 2000