Melt processable polyester capable of forming an anisotropic...

Details Melt processable polyester capable of forming an anisotropic... Melt processable polyester capable of forming an anisotropic...

C - Chemistry, Metallurgy

08

G

402/301

C08G 63/60 (2006.01) C08J 5/18 (2006.01)

Patent

CA 1271887

MELT PROCESSABLE POLYESTER CAPABLE OF FORMING AN ANISOTROPIC MELT COMPRISING A RELATIVELY LOW CONCENTRATION OF 6-OXY-2-NAPHTHOYL MOIETY, 4-OXYBENZOYL MOIETY, 2,6-DIOXYNAPHTHALENE MOIETY, AND TEREPHTHALOYL MOIETY Abstract of the Disclosure The novel polyester of the present invention is capable of forming a highly tractable anisotropic melt phase. Such polyester includes a relatively low concentration of 6-oxy-2- naphthoyl moiety in combination with a more substantial concentration of 4-oxybenzoyl moiety. Other key moieties present are 2,6-dioxynaphthalene moiety and terephthaloyl moiety. The polyester can be formed via a melt polymerization procedure to achieve a relatively high degree of polymerization in view of its relatively low melt viscosity. The polyester upon melt extrusion forms quality high performance fibers, films, and three- dimensional shaped articles. The resulting product also well retains desirable mechanical properties at elevated temperatures.

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