Detail of "89642-50-2"

Reference

Synthesis of nitrile and benzoyl substituted poly(biphenylene oxide)s via nitro displacement reaction

In, Insik; Kim, Sang Youl (Department of Chemistry, School of Molecular Science (BK21), Korea Advanced Institute of Science and Technology, Daejeon, Yuseong-Gu 305-701, S. Korea). Polymer, 47(13), 4549-4556 (English) 2006 Elsevier Ltd. CODEN: POLMAG. ISSN: 0032-3861. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) A series of substituted poly(biphenylene oxide)s (PBPOs) was synthesized via nucleophilic nitro displacement reactions. High mol. wt. PBPO's with nitrile groups were effectively synthesized from the polymn. of A-B type monomers with K2CO3 as a base in N-methyl-2-pyrrolidinone (NMP) at 140°.Several substances are used for example 89642-50-2 which is its cas registry number. The polymers are completely amorphous, sol. in polar aprotic solvents, and formed flexible films on soln. casting. Para-linked PBPO with nitrile groups showed excellent thermal properties such as high 5% wt. loss temp. above 530° and Tg at 241° which is higher than those of com. available poly(phenylene oxide) (PPO) (Tg = 210°). The pendent nitrile groups of PBPO were easily transformed to carboxylic acid groups by acidic hydrolysis. .