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Aromatic liquid-crystalline polyester composition and film of the same

一种液晶聚酯、组合物的技术，应用在芳族液晶聚酯组合物领域，能够解决金属层粘性不足、小各向异性、高撕裂强度等问题

Inactive Publication Date: 2006-05-03
SUMITOMO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This conventional aromatic liquid crystal polyester film has small anisotropy and high tear strength, however, due to the relatively high viscosity of the film in the molten state, when producing a multilayer board by laminating multiple films and metal layers The film may exhibit insufficient adhesion to the metal layer when

Method used

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  • Aromatic liquid-crystalline polyester composition and film of the same
  • Aromatic liquid-crystalline polyester composition and film of the same
  • Aromatic liquid-crystalline polyester composition and film of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] Add 128g (0.68mol) of 2-hydroxy-6-naphthoic acid, 633g (0.34mol) of 4,4'-dihydroxybiphenyl, 56.5g (0.34mol) of isophthalic acid and 152.7g (1.50mol) of acetic anhydride In a reactor equipped with stirrer, torque meter, nitrogen introduction tube, thermometer and reflux condenser. The inside of the reactor was sufficiently replaced with nitrogen, and then the mixture was heated to 150° C. in 15 minutes under nitrogen flow, and refluxed for 3 hours while maintaining the temperature.

[0114] Then, the mixture was heated to 320° C. over 170 minutes while distilling by-product acetic acid and unreacted acetic anhydride, and the point of increase in torque was regarded as the end of the reaction, and the contents were taken out. The solid content was cooled to room temperature and ground using a grinding machine, and then kept at 250° C. for 3 hours under a nitrogen atmosphere during polymerization in a solid phase stage to obtain an aromatic liquid crystal polyester powder....

Embodiment 2

[0120] An aromatic crystalline polyester film and its samples were prepared in the same manner as in Example 1, except that 0.08 g of benzoic anhydride was used as the aromatic carboxylic acid anhydride instead of phenyl acetate used as the aliphatic carboxylic acid aryl ester. The melt viscosity of the sample was 9,500 Pa·s.

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Abstract

Provided is an aromatic liquid crystalline polyester composition comprising at least one compound selected from the group consisting of aliphatic aryl carboxylic acid esters and aromatic carboxylic acid anhydrides, an aromatic liquid crystalline polyester, and a solvent comprising at least 30% by weight of a halogenated phenol compound. Using the composition, an aromatic liquid crystal polyester film having a low viscosity in a molten state can be obtained.

Description

technical field [0001] The present invention relates to an aromatic liquid crystal polyester composition and a film obtained from the composition. Background technique [0002] Aromatic liquid crystal polyesters are widely used in various fields due to their low water absorption, high heat resistance, and high mechanical strength, and are mainly used in delicate parts of electronic devices such as connectors produced by injection molding. Aromatic liquid crystal polyester films are used as insulating films for multilayer printed wiring boards or flexible printed wiring boards. [0003] It is well known that an aromatic liquid crystalline polyester film can be produced from a composition comprising 0.01 to 100 parts by weight of an aromatic liquid crystalline polyester and 100 parts by weight of a solvent including a chlorophenol compound (see Japanese Patent Application Laid-Open No. 2002 -114894, corresponding to US Patent No. 6,838,546). This conventional aromatic liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00B32B15/09C08J5/18C09K19/38
CPCC08K5/136C09K2323/06C09K2323/061H05K1/0326H05K3/4626H05K2201/0141Y10S428/91Y10T428/31681Y10T428/31786C08L67/03C08J5/18C08L67/00
Inventor 冈本敏片桐史朗
Owner SUMITOMO CHEM CO LTD
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