METHODS OF FORMING POLY(ARYL ETHER SULFONE)S AND ARTICLES THEREFROM

摘要

A poly(aryl ether sulfone) of low polydispersity containing no detectable cyclic polymer byproduct was prepared by melt polymerization without catalyst, solvent, and base. The poly(aryl ether sulfone) can be used without further purification for the manufacture of articles. A melt composition for fabricating an article comprises the poly(aryl ether sulfone) and, optionally, one or more additives.

主权项

1. A method, comprising:
forming a first mixture comprising: i) a silylated bis-phenol (first monomer) of formula (1): wherein
a′ is an integer having a value of 0 to 4,b′ is an integer having a value of 0 to 4,each W′ is an independent monovalent radical selected from the group consisting of methyl, ethyl, methoxy, and ethoxy,each R′ is an independent radical selected from the group consisting of alkyl groups comprising 1 to 6 carbons and haloalkyl groups comprising 1 to 6 carbons, andeach R″ is an independent alkyl group comprising 1 to 6 carbons, and ii) a bis-aryl sulfone (second monomer) of formula (2): wherein
each E′ is an independent electron withdrawing group selected from the group consisting of nitro (*—NO2), cyano (*—CN), trifluoromethyl (*—CF3), trichloromethyl (*—CCl3), and alkylsulfones (*—S(═O)2Ra), wherein Ra is an alkyl or aryl group comprising 1 to 10 carbons, andeach X′ is an independent leaving group selected from the group consisting of fluoride, chloride, bromide, iodide, trifluoromethoxy (*—OCF3), trichloromethoxy (*—OCCl3), and trifluoromethanesulfonyl (*—OS(═O)2CF3); and heating the mixture with agitation at a temperature of about 150° C. to 300° C., thereby forming a second mixture comprising a poly(aryl ether sulfone).