Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Patent
1973-09-13
1977-09-27
Levy, Donald
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Tanning
8 30, 8 31, 8168C, 260 37NP, 260 37P, 260 40R, 264290T, D06P 300
Patent
active
040508927
ABSTRACT:
A process is disclosed for preparing shaped or preformed polyester material for coloring with acid type dyes, which comprises impregnating the shaped or preformed polyester material, preferably but not necessarily continuously, at a temperature between 90.degree. C. and 250.degree. C. at ordinary atmospheric pressure with a mixture of (a) an organic nitrogen compound and (b) a glycol, an alcohol, a ketone, an ether, or water; then cooling the treated material with cold water or a mixture of a carboxylic acid with cold water whereby to impart affinity for acid dyes to the treated polyester material. Coloring the treated polyester material is then effected such as by padding, printing or cascading the treated polyester material with an acid dye from an aqueous solution or a printing paste whereby to effect fixation of said acid dye on the treated polyester material with substantially uniform distribution thereof within the polyester material. The organic nitrogen compound is an alkyleneamine, an alkanolamine, or an alkylamine. The pretreated polyester material to which affinity for acid type dyes has been imparted is also claimed as a part of the invention, as is the thus acid-dyed pretreated polyester material.
REFERENCES:
patent: 3102323 (1963-09-01), Adams
patent: 3117173 (1964-01-01), Adams
patent: 3233019 (1966-02-01), Adams
patent: 3317978 (1967-05-01), McIntosh et al.
patent: 3472608 (1969-10-01), Kingston
patent: 3527846 (1970-09-01), Cappuccio et al.
patent: 3807946 (1974-04-01), Harper et al.
Levy Donald
Martin Processing Co., Inc.
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