Polyester composition and process for producing the same

Details Polyester composition and process for producing the same Polyester composition and process for producing the same

1986-05-16

1987-05-26

Jacobs, Lewis T.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

2641761, 524605, C08K 322

Patent

active

046687327

ABSTRACT:
A polyester composition having an enhanced melt-spinnability and processability and useful for producing polyester fibers having excellent mechanical properties and whiteness, comprises (A) a polyester resin derived from esterification or interesterification and polycondensation of a diol component with an acid component which comprises a terephthalic acid, 0.1 to 20 molar % based on the amount of the terephthalic acid, of a naphthalene dicarboxylic acid compound and/or diphenyl dicarboxylic acid compound, and 0.01 to 20 molar % based on the amount of the terephthalic acid, of a p-hydroxybenzoic acid compound and/or benzoic acid compound and/or 0.005 to 0.15 molar % based on the amount of the terephthalic acid, of at least one member selected from alkali and alkaline earth metal salts of organic carboxylic acids; and (B) 0.01 to 3% based on the weight of the polyester resin (A), of titanium dioxide particles dispersed in the polyester resin (A), having an average size of 0.5 .mu.m or less and containing agglomerates having a size of 5 .mu.m or more in the number of 300 or less per 10 mg of the polyester resin (A).

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