Liquid crystalline polyester resin for extrusion molding
First Claim
1. A liquid crystalline polyester resin for extrusion molding having a solder heat resistant temperature of 250°
- 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 beginning temperature and the melt viscosity (viscosity 2b) under the same shearing speed at a temperature 20°
C. higher than the flow beginning temperature is from 0.10 to 0.70.
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Accused Products
Abstract
Provided is a liquid crystalline polyester resin for extrusion molding having a solder heat resistant temperature of 250° 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° 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.
36 Citations
7 Claims
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1. A liquid crystalline polyester resin for extrusion molding having a solder heat resistant temperature of 250°
- 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 beginning temperature and the melt viscosity (viscosity 2b) under the same shearing speed at a temperature 20°
C. higher than the flow beginning temperature is from 0.10 to 0.70. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- 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 beginning temperature and the melt viscosity (viscosity 2b) under the same shearing speed at a temperature 20°
Specification