71519-79-4 1,3-Isobenzofurandione, 5,5-(1-methylethylidene)bis(4,1-phenyleneoxy)bis-, polymer with 1,3-benzenediamine and 1,4-benzenediamine
71520-07-5 2-Propenoic acid, 2-methyl-, monoester with 1,2-propanediol, polymer with 1,3-diisocyanatomethylbenzene and .alpha.-hydro-.omega.-hydroxypolyoxy(methyl-1,2-ethanediyl)