General features of the reaction of 4,4'-difluorobenzophenone with potassium diphenoxide of 2,2-bis(4-hydroxyphenyl)propaneстатья
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Дата последнего поиска статьи во внешних источниках: 24 октября 2016 г.
Аннотация:The major factors determining molecular weights of polyarylene-ether ketones formed by the reaction of 4,4'-difluorobenzophenone with 2,2-bis(4-hydroxyphenyl)propane in the presence of K2CO3 were revealed. The optimum conditions for the preparation of high-molecular-weight polymers were found, and it was demonstrated that it is possible to control their molecular weights (<(M)over bar (W)> from 10 000 to 200 000).