Polyamides having improved dyeability and thermal stability

Details Polyamides having improved dyeability and thermal stability Polyamides having improved dyeability and thermal stability

1966-06-15

1976-03-16

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 457R, 260 457P, 260 459ND, 260 78R, 260 78L, 260 78S, 260 78SC, C08G 600

Patent

active

039445186

ABSTRACT:
A method for improving the polymerization of polyamide compositions and the improved compositions formed thereby by polymerizing the polyamide in the presence of a small molar percent of a phosphonic acid salt of an organic diamine. The phosphonic acid salt increases the polymerization rate and results in a polymer of improved whiteness.

REFERENCES:
patent: 2510777 (1950-06-01), Gray
patent: 3216976 (1965-11-01), Schwartz et al.
patent: 3235534 (1966-02-01), Brinkman et al.
patent: 3321447 (1967-05-01), Kunde et al.
patent: 3365428 (1968-01-01), Wujciak
patent: 3376258 (1968-04-01), Gysling et al.
Organo Phosphorus Monomers and Polymers, Gefter, 1962, PPX-XIII.

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