Bleaching and dyeing; fluid treatment and chemical modification – Chemical modification of textiles or fibers or products thereof – Treating textiles or fibers from synthetic resin or natural...
Patent
1973-10-05
1976-01-13
Padgett, Benjamin R.
Bleaching and dyeing; fluid treatment and chemical modification
Chemical modification of textiles or fibers or products thereof
Treating textiles or fibers from synthetic resin or natural...
8 85, 8 92, 8173, D06P 1645, D06P 1653
Patent
active
039321266
ABSTRACT:
A process is disclosed for coloring a polyester material, which comprises impregnating the same by padding, printing or cascading with an aqueous solution or printing paste of one or more acid dyes incorporated with both (a) an organic nitrogen compound and (b) an organic carboxylic acid, drying the impregnated polyester material and then exposing same to dry heat at a temperature between 150.degree.C. and 230.degree.C. for a period of 5 to 60 seconds, thereby effecting fixation of said acid dye or dyes on the polyester material and uniform distribution thereof within the polyester material. The organic nitrogen compound with which the polyester material is treated is an alkyleneamine, an alkanolamine, or an alkylamine. Suitable lengths (in the direction of travel) of the polyester yarn or other form of polyester material undergoing the said impregnation is contacted in a precise, controlled manner according to a predetermined pattern to produce any desired variegated pattern contour in the final dyed polyester material. The process is preferably carried out continuously. The acid-dyed polyester material in various forms is also a part of the invention.
REFERENCES:
patent: 2092429 (1936-02-01), Straub et al.
patent: 3164436 (1965-01-01), Altermatt
patent: 3480378 (1969-11-01), Taube et al.
Leland David
Martin Processing Co., Inc.
Padgett Benjamin R.
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