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US4855387A Poly(arylene ether ketones) having biphenylene-4,4'-dicarbonyl groups 失效
具有亚联苯基-4,4'-二羰基的聚(亚芳基醚酮)

Poly(arylene ether ketones) having biphenylene-4,4'-dicarbonyl groups
摘要:
Novel copoly(arylene ether ketones) having a biphenylene-4,4'-dicarbonyl group in their backbone, comprising(A) a repeat unit ##STR1## and (B) a repeat unit selected from the group consisting of ##STR2## where R, which is the same in each of repeat units (A) and (B), is a direct bond, ##STR3## the molar ratio of repeat units (A) to repeat units (B) being between about 10:90 and about 70:30.
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