Use of metal soaps of polycarboxylic acids or polycarboxylic acid partial esters as processing aids for polyesters
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United States of America Patent
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Dec 21, 1993
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N/A
app pub date -
Nov 2, 1992
filing date -
May 2, 1990
priority date (Note) -
Expired
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Abstract
The invention is a processing aid for thermoplastic polyesters which is a salt of a polycarboxylic acid or the salt of a polycarboxylic partial ester. The polycarboxylic acids are partial esters or sales of modified acids such as succinic acid, adipic acid, phthalic acid, citric acid, dicarboxylphenyl group and the like. The addition of the processing aid improves the slip and transparency.
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