D - Textiles – Paper – 06 – P
Patent
D - Textiles, Paper
06
P
8/9, 8/26.4
D06P 3/24 (2006.01) C09B 29/08 (2006.01) D06P 3/82 (2006.01)
Patent
CA 1084655
ABSTRACT An improved process for dyeing nylon carpeting material which is tufted or woven from a blend of cationic dyeable nylon yarns and acid dyeable nylon yarns is provided. Staining of the cationic dyeable portion is substantially eliminated and red and dull shades on the deep dyeing acid dyeable nylon is avoided by using as the acid dye a member of a small class of monoazo dyes made by coupling an appropriate diazotized aminobenzene sulfonic acid into N-ethyl-N-phenylbenzylamine. The monoazo dyes of the invention are applied to the carpet material along with an appro- priate cationic dye in a conventional application procedure. The use of the monoazo dyes according to the invention produces a dyed blended nylon carpet material in which the cationic dyeable port- ion is not appreciably dyed or stained by the acid dye and in which the acid dyeable portion is characteriezed by outstanding light fastness and excellent transfer properties. Deep dyeing acid dyeable nylon is dyed a bright crisp shade with the monoazo dyes according to the invention.
268984
Huffman Allan M.
American Color & Chemical Corporation
G. Ronald Bell & Associates
LandOfFree
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