Method of increasing depth shade

Details Method of increasing depth shade Method of increasing depth shade

2011-08-30

2011-08-30

Choi, Ling-Siu (Department: 1761)

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

With coating, sizing, or lubricating

C008S516000, C106S506000, C524S102000, C544S212000

Reexamination Certificate

active

08007546

ABSTRACT:
The invention relates to a method of increasing the depth of shade of dyed natural or synthetic polyamide fiber materials, which comprises treating the fiber material before, during or after dyeing with a liquor comprising a compound of formula (1) wherein R is halogen, C1-C12alkyl, C5-C24aryl, C6-C36aralkyl, —OR1, or —NR1R2, R1and R2being, each independently of the other, hydrogen, C1-C12alkyl unsubstituted or substituted by one or more hydroxy, amino, mercapto, carboxyl, sulfo, C1-C12alkylsulfonyl, C5-C24arylsulfonyl or C6-C36aralkylsulfonyl groups, C5-C24aryl unsubstituted or substituted by one or more hydroxy, amino, carboxyl, sulfo, C1-C12alkylsulfonyl, C5-C24arylsulfonyl or C6-C36aralkylsulfonyl groups, or C6-C36aralkyl unsubstituted or substituted by one or more hydroxy, amino, carboxyl, sulfo, C1-C12alkylsulfonyl, C5-C24arylsulfonyl or C6-C36aralkylsulfonyl groups, X and Y are, each independently of the other, mercapto, —NR3R4or —N+R3R4R5A−, wherein R3, R4and R5are, each independently of the others, hydrogen or C1-C12alkyl and A−is chloride, bromite, iodide, sulfate or methylsulfate, R6and R7are, each independently of the other, hydrogen or C1-C12alkyl, and x and y are, each independently of the other, a number from 2 to 12.

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