Polyester of para-hydroxy benzoic acid, 1,2-bis(pa

专利名称：Polyester of para-hydroxy benzoic acid, 1,2-bis(para-carboxyphenoxy)ethane,

terephthalic acid and hydroquinone capableof forming an anisotropic melt which readilyundergoes melt processing, and moldedarticles and fibers based thereon

发明人：Favstritsky, Nicolai A.申请号：EP80300317.7申请日：19800204公开号：EP0017310A1公开日：19801015

摘要：A polyester is provided which has been found to exhibit an anisotropic meltphase at a temperature which enables it readily to undergo melt processing to formquality fibers, molded articles, etc. The polyester of the present invention is different incharacter from earlier polyesters and includes as essential ingredients moieties derivedfrom para-hydroxy benzoic acid 1,2-bis(para- carboxyphenoxy) ethane, terephtalic acid,and unsubstituted hydroquinone in certain specified proportions. The polyester of thepresent invention can be produced on a relatively economical basis and has been foundcapable of yielding an anisotropic melt of relatively low viscosity at a desirable

temperature for melt processing. In a preferred embodiment the polyester is capable ofundergoing melt processing at a temperature below approximately 300°C., and in aparticularly preferred embodiment at a temperature below approximately 290°C. (e.g.with standard equipment commonly used for the melt processing of polyethylene

terephtalate). Fibers conveniently can be melt spun from the polyester of the presentinvention which exhibit tenacity values which are enhanced to a surprisingly great extentupon thermal treatment.

申请人：FIBER INDUSTRIES, INC.

地址：Post Office Box 10038 Charlotte North Carolina 28201 US

国籍：US

代理机构：De Minvielle-Devaux, Ian Benedict Peter

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