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公开(公告)号:US4737567A
公开(公告)日:1988-04-12
申请号:US919114
申请日:1986-10-15
IPC分类号: C08G63/68 , C08G63/60 , C08G63/692
CPC分类号: C08G63/692
摘要: A random copolyester is described, comprising recurring moieties represented by formula (I), (II), and (III), and having an intrinsic viscosity of not less than 0.5, wherein said recurring moieties of formulae (I) and (II) are existing substantially in equimolar amount and recurring moieties of formulae (I) and (III) are present in a molar ratio of from 95/5 to 5/95 ##STR1## wherein Ar.sub.1 represents a trivalent aromatic group and Ar.sub.2 represents a divalent aromatic group. In formulae (I), (II), and (III), aromatic rings may be substituted with an alkyl group or an alkoxy group having from 1 to 20 carbon atoms, an aryl group or aryloxy group having from 6 to 20 carbon atoms, or a halogen atom. The copolyester obtained is excellent in heat resistance and flame retardance.
摘要翻译: 描述了一种无规共聚酯,其包含由式(I),(II)和(III)表示的重复部分,特性粘度不小于0.5,其中式(I)和(II)的所述重复部分是 (I)和(III)的重复部分以95/5至5/95的摩尔比存在。(I)图像(I)和(III)的摩尔比。 其中Ar 1表示三价芳族基团,Ar 2表示二价芳香族基团。 在式(I),(II)和(III)中,芳环可以被具有1至20个碳原子的烷基或烷氧基,具有6至20个碳原子的芳基或芳氧基取代, 或卤素原子。 得到的共聚聚酯具有优异的耐热性和阻燃性。