An aromatic polyester consisting essentially of (1) p-oxybenzoyl units or the 3-methyl- or 3-chloro-derivatives thereof; (2) 3,4'-dioxydiphenylether or 3,4'-dioxybenzophenone units or the 3'-methyl- or 3'-chloro-derivatives thereof or terephthaloyldi (3-methyl-4-oxybenzene) units; and (3) terephthaloyl units and filaments thereof.
PROCESS FOR PRODUCING 3,4' DIHYDROXYBENZOPHENONE AS AN INTERMEDIATE FOR PRODUCING 3,4' DIACETOXYBENZOPHENONE
申请人:E. I. du Pont de Nemours and Company
公开号:EP2401249A1
公开(公告)日:2012-01-04
JPH0192409A
申请人:——
公开号:JPH0192409A
公开(公告)日:1989-04-11
PROCESS FOR PRODUCING 3,4' DIACETOXYBENZOPHENONE
申请人:LEE Kiu-Seung
公开号:US20100217046A1
公开(公告)日:2010-08-26
A process for producing 3,4′diacetoxybenzophenone by first synthesizing 3,4′dihydroxybenzophenone by reacting meta-hydroxybenzoic acid and phenol in the presence of a Lewis acid, and a protonic acid followed by reacting the 3,4′dihydroxybenzophenone with an acetylating agent in the presence of an inorganic acid and activated carbon.