申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP0306051A1
公开(公告)日:1989-03-08
An improved process for producing aromatic polyethers by condensation polymerizing aromatic dihydroxy compounds represented by the general formula: HO-Ar-OH and aromatic dichloro compounds represented by the general formula: Cl-Ar¹-Y-Ar²-Cl, or condensation polymerizing monohydroxymonochloro aromatic compounds represented by the general formula: HO-Ar¹-Y-Ar²-Cl in the above formulae, Ar, Ar¹, Ar² are as defined in the specification) in the presence of alkali metal compounds comprising a combination of alkali metal carbonates comprising carbonate and/or hydrogencarbonate of an alkali metal, e.g., potassium, and alkali metal fluorides.
In accordance with the present process, high molecular weight aromatic polyethers can be efficiently produced from aromatic chloro compounds which are inexpensive and easily available.
一种通过通式为:HO-Ar-OH 的芳香族二羟基化合物和通式为:HO-Ar-OH 的芳香族二氯化合物的缩合聚合生产芳香族聚醚的改进工艺:HO-Ar-OH和通式为Cl-Ar¹-Y-Ar²-Cl的芳香族二氯化合物缩合聚合生产芳香族聚醚的改进工艺:Cl-Ar¹-Y-Ar²-Cl,或通过缩合聚合通式为HO-Ar¹-Y-Ar²-Cl,在上式中,Ar、Ar¹、Ar²如说明书中所定义)的碱金属化合物的存在下,该碱金属化合物由碱金属碳酸盐(包括碱金属的碳酸盐和/或碳酸氢盐,如钾)和碱金属氟化物组合而成。
根据本发明的工艺,可以从芳香族氯化合物中有效地生产出高分子量的芳香族聚醚,而芳香族氯化合物价格低廉,容易获得。