Semi-crystalline, semi-aromatic terpolymers with superior post-molding shrinkage and balance of mechanical performance
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United States of America Patent
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Nov 9, 1999
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app pub date -
May 15, 1997
filing date -
May 15, 1997
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Abstract
This invention relates to high temperature, semi-crystalline, semi-aromatic nylon terpolymers with improved shrinkage resistance, made from terephthalic acid (TA), hexamethylene diamine (HMD) and/or 2-methyl pentamethylene diamine (2-MPMD) and another aliphatic dicarboxylic acid as monomers. These polymers display superior % TD (Transverse Direction) annealing shrinkage, as well as very good balance of mechanical performance as high temperature nylons.
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