Liquid crystalline polyester resin for extrusion molding

Details Liquid crystalline polyester resin for extrusion molding Liquid crystalline polyester resin for extrusion molding

1999-11-10

2000-10-31

Acquah, Samuel A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528193, 528194, 528206, 528212, 528219, 428221, 428357, C08G 6300

Patent

active

061404551

ABSTRACT:
Provided is a liquid crystalline polyester resin for extrusion molding having a solder heat resistant temperature of 250.degree. C. or more, wherein the ratio ((viscosity 2b)/(viscosity 1b)) of the melt viscosity (viscosity 1b) under a shearing speed of 1000/sec at the flow initiation temperature and the melt viscosity (viscosity 2b) under the same shearing speed at a temperature 20.degree. C. higher than the flow initiation temperature is from 0.10 to 0.70. The extrusion molding material of the above-described liquid crystalline polyester resin has excellent heat resistance, and can provide an extrusion molded article, especially a film having excellent appearance.

REFERENCES:
patent: 5085807 (1992-02-01), Okamoto et al.
patent: 5767195 (1998-06-01), Furuta et al.
patent: 5891532 (1999-04-01), Furuta et al.
patent: 5997765 (1999-12-01), Furuta et al.

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