Liquid-crystal polyester resin composition
AssigneeKabushiki Kaisha Ueno Seiyaku Oyo Kenkyusho
InventorsMasaya Kitayama, Kiichi Kometani, Naoshi Saito
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Abstract
A liquid crystal polyester resin composition which suppresses the formation of a blister caused by a heat treatment at a high temperature and has excellent moldability. This composition comprises (A) a liquid crystal polyester comprising at least two aromatic oxycarbonyl recurring units and (B) a liquid crystal polyester comprising at least two aromatic oxycarbonyl recurring units, at least one aromatic dioxy recurring unit and at least one aromatic dicarbonyl recurring unit. The weight ratio of the liquid crystal polyester (A) to the liquid crystal polyester (B) is 90/10 to 30/70.
Claims6
A liquid crystal polyester resin composition comprising (A) a liquid crystal polyester comprising two aromatic oxycarbonyl recurring units represented by the following formulas (I)-1 and (I)-2:
- (B) a liquid crystal polyester consisting essentially of two aromatic oxycarbonyl units represented by the above formulas (I)-1 and (I)-2, at least one aromatic dioxy recurring unit represented by the following formula (II):
- —O—Ar2—O— (II)
- wherein Ar2 is
- and at least one aromatic dicarbonyl recurring unit represented by the following formula (III):
- wherein Ar3 is
- the weight ratio of said liquid crystal polyester (A) to said liquid crystal polyester (B) being 90/10 to 30/70 and said liquid crystal polyester (A) and said liquid crystal polyester (B) having a weight average molecular weight of 30,000 to 500,000.
Dependencies are inferred from the claim text.