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Chloro- and Dichloro-bis-(trichloromethyl)-benzenes 1

โœ Scribed by Bradsher, C. K.; Gross, P. M.; Hobbs, M. E.; Kittila, R. S.; Rapoport, L.; Tarrant, P.; West, G.

Book ID
126125871
Publisher
American Chemical Society
Year
1948
Tongue
English
Weight
243 KB
Volume
70
Category
Article
ISSN
0002-7863

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High molecular weight poly(phenylenebenzobisoxazole) (PBO) was synthesized from 1,3-diamino-4,6-dihydroxybenzene dihydrochloride ( 1) and 1,4-bis(trichloromethyl)benzene ( 3) in polyphosphoric acid (PPA) or a mixture of PPA and methanesulfonic acid. When PPA was used as the solvent, 3 was first conv