Polyamides of terephthalic acid and 5-methyl-1,9-nonanediamine a

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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260 334R, 260 78S, C08G 6926

Patent

active

039806219

ABSTRACT:
A new polyamide composed at least primarily of terephthalic acid and 5-methyl-1,9-nonanediamine, the polyamide having less than 5 olefinic double bonds per 100 diamine units, an inherent viscosity of at least about 0.6, a polymer melt temperature of at least about 200.degree.C, a T.sub.g in the range of about 100.degree.C to about 120.degree.C, and a T.sub.m in the range of about 247.degree.C to about 265.degree.C can be formed into fibers without the use of plasticizers. Such fibers can be produced with a boiling water shrinkage of less than 30 percent and a zero strength temperature of at least 200.degree.C.

REFERENCES:
patent: 2752328 (1956-06-01), Magat
patent: 3198771 (1965-08-01), Gabler
patent: 3563959 (1971-02-01), Schade et al.

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