Dry dyestuff powders with enhanced water solubility

Details Dry dyestuff powders with enhanced water solubility Dry dyestuff powders with enhanced water solubility

1987-11-06

1989-02-07

Niebling, John F.

Bleaching and dyeing; fluid treatment and chemical modification

Dry dye composition other than mere mixture of two or more...

8937, C09B 6742

Patent

active

048028886

ABSTRACT:
The present invention is concerned with improving the solubility of anionic water soluble dyestuff powders. The solubility of these powders particularly in cold water, is enhanced by adding (i) a chelating agent which has at least two free acid groups and (ii) a Lewis base in an amount sufficient to bring the pH of the water solution of the powder to a value of about 7-10.

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