Crystalline polyamide composition from dicarboxylic acid mixture and diamine
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United States of America Patent
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Jul 29, 1986
Issued Date -
N/A
app pub date -
Feb 8, 1985
filing date -
Feb 16, 1983
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Abstract
Novel crystalline polyamides having high heat deflection temperatures when filled are prepared from aliphatic diamines and either mixtures of terephthalic acid and adipic acid or mixtures of terephthalic acid, isophthalic acid and adipic acid. The mole ratio of aliphatic diamine to terephthalic acid, isophthalic acid, and adipic acid is in the range of about 100:65-95:25-0:35-5. The polyamides can be filled with about 10 to about 60 parts by weight of a filler. The mechanical properties of these polyamides are largely unaffected by absorbed water.
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