Dyeing preparations and process for dyeing polyacrylonitrile mat

Details Dyeing preparations and process for dyeing polyacrylonitrile mat Dyeing preparations and process for dyeing polyacrylonitrile mat

1976-07-12

1978-09-26

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 76, 8177AB, D06P 100, D06P 370

Patent

active

041166221

ABSTRACT:
A process for dyeing polyacrylonitrile materials in clear, neutral blue shades, which comprises the use of a mixture of an oxazine dye of the formula ##STR1## and a naphtholactam dye of the formula ##STR2## in the ratio of 1:3 to 3:1, in which formulae R.sub.1 and R.sub.2 represent low molecular alkyl radicals, R.sub.3 represents a low molecular alkyl radical or an aryl radical, R.sub.4 represents hydrogen or a low molecular alkyl radical, each of R.sub.5 and R.sub.6 represents a low molecular alkyl radical, Y represents a halogen atom and X.sup..crclbar. represents an anion and a dyestuff preparation which contains an oxazine dye of the formula (1) and a naphtholactam dye of the formula (2) in the ratio 1:3 to 3:1.

REFERENCES:
patent: B458060 (1976-01-01), Reinehr et al.
patent: 3974178 (1976-08-01), Ohkawa et al.

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