Mass coloration of polyamides

Details Mass coloration of polyamides Mass coloration of polyamides

1974-08-26

1976-03-02

Welsh, M. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260374, C09B 132

Patent

active

039417425

ABSTRACT:
A process for the mass coloration of polyamide chips in which a dye of the formula ##SPC1##
In which R is hydrogen or chloro is used. The dye is absorbed quantitatively or virtually quantitatively from the aqueous phase. After shaping, pure blue colorations are obtained having great thermal stability.

REFERENCES:
patent: 2345533 (1944-03-01), Graves
patent: 2870173 (1959-01-01), Hindermann et al.
patent: 3361705 (1968-01-01), Koz et al.

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