申请人:RAYCHEM CORPORATION (a Delaware corporation)
公开号:EP0178183A2
公开(公告)日:1986-04-16
A process for producing aromatic ketone-sulfone copolymers which comprises polymerizing appropriate monomers by a Friedel-Crafts polymerization reaction using a Lewis acid catalyst. A controlling agent such as a Lewis base is added to the reaction medium. The reaction medium comprises, for example, aluminum trichloride as the Lewis acid, an organic Lewis base such as N,N-dimethylformamide or an inorganic Lewis base such as sodium or lithium chloride as the controlling agent, and a diluent such as methylene chloride or 1,2-dichloroethane. The amount of Lewis acid, the amount of Lewis base, the temperature of the reaction and the monomer to diluent molar ratio are varied depending on the monomer system to obtain melt-processable, high molecular weight, substantially linear polymers, for example prepared from copolymerization of p-phenoxybenzoyl chloride and p-phenoxybenzenesulfonyl chloride or of terephthaloyl chloride, 1,4-benzenedisulfonyl chloride and diphenyl ether, or of like monomers.
一种生产芳香族酮砜共聚物的工艺,包括使用路易斯酸催化剂,通过弗里德尔-卡 夫斯聚合反应使适当的单体聚合。在反应介质中加入路易斯碱等控制剂。例如,反应介质包括作为路易斯酸的三氯化铝、作为控制剂的有机路易斯碱(如 N,N-二甲基甲酰胺)或无机路易斯碱(如氯化钠或氯化锂),以及稀释剂(如二氯甲烷或 1,2-二氯乙烷)。路易斯酸的用量、路易斯碱的用量、反应温度以及单体与稀释剂的摩尔比可根据单体体系的不同而变化,以获得可熔融加工的高分子量、基本为线性的聚合物,例如由对苯氧基苯甲酰氯和对苯氧基苯磺酰氯或对苯二甲酰氯、1,4-苯二磺酰氯和二苯醚或类似单体的共聚物制备的聚合物。