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Synthesis of polysulfonates and polysulfonamides from 7,7-dimethyl-7H-dibenzo[c,h]xanthene-5,9-disulfonyl chloride (1972)

Wilson, John C. ; Hamb, F. Lynn

New York : Wiley-Blackwell

Journal of Polymer Science Part A-1: Polymer Chemistry 10 (1972), S. 1157-1164

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ISSN: 0449-296X

Keywords: Physics ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Treatment of 7,7-dimethyl-7H-dibenzo[c,h]xanthene with chlorosulfonic acid leads to the formation of the mono-, di- and tetrasulfonyl chloride derivatives. The 5 and 9 positions of 7,7-dimethyl-7H-dibenzo[c,h]xanthene were found to be most active toward electrophilic sulfonation. Polysufonates and polysulfonamides prepared from 7,7-dimethyl-7H-dibenzo[c,h]xanthene-5,9-disulfonyl chloride exhibit glass transition temperatures above 200°C and show little weight loss at temperatures to 350°C.

Additional Material: 1 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/pol.1972.150100419

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