发明授权
US4181792A Liquid crystal copolyesters containing terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid and hydroquinone 失效
含有对苯二甲酸,间苯二甲酸,2,6-萘二甲酸和氢醌的液晶共聚酯

Liquid crystal copolyesters containing terephthalic acid, isophthalic
acid, 2,6-naphthalenedicarboxylic acid and hydroquinone
摘要:
Disclosed are liquid crystal copolyesters having melting points low enough to allow the copolyesters to be melt-processed in conventional equipment. The copolyesters are prepared from terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid and a diacyl ester of hydroquinone and contain the following divalent radicals: ##STR1##
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