Synonyms: 2-Butenedioic acid (2E)-, polymer with .alpha.,.alpha.-(1-methylethylidene)di-4,1-phenylenebis.omega.-hydroxypolyoxy(methyl-1,2-ethanediyl);2-Butenedioic acid (E)-, polymer with .alpha.,.alpha.'-[(1-methylethylidene)di-4,1-phenylene]bis[.omega.-hydroxypoly[oxy(methyl-1,2-ethanediyl)]];PROPOXYLATED BISPHENOL FUMARATE POLYESTER);2-Butenedioic acid (E)-, polymer with α,α'-[(1-methylethylidene) di-4,1-phenylene]bis[ω-hydroxypoly [oxy(methyl-1,2-ethanediyl)]];bisphenol A/ propylene oxide/ fumarate copolymer