Process for the preparation of storage stable aqueous formulatio

Details Process for the preparation of storage stable aqueous formulatio Process for the preparation of storage stable aqueous formulatio

1985-07-16

1987-03-10

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Dye concentrate composition wherein an additional amount of...

8440, 8554, 8606, 8680, 8611, 8917, 8924, B01F 312, C09B 6734, D06P 161

Patent

active

046488839

ABSTRACT:
The invention relates to a process for the preparation of a storage stable aqueous formulation of anionic dyes, which process comprises treating the aqueous dye solution and/or dispersion with a polymeric anion exchanger, simultaneously and/or subsequently subjecting the resin-bonded dye to a mechanical wet grinding, in the presence of a nonionic dispersant, and adding to the resultant aqueous dispersion the assistants customarily present in the liquid dye formulations.
The process makes it possible to precipitate anionic dyes in virtually quantitative yield from aqueous solution and to prepare storage-stable dye dispersions.

REFERENCES:
patent: 3932127 (1976-01-01), D'Albignac
patent: 4066595 (1978-01-01), Bunge
patent: 4265631 (1981-05-01), Becker
Chemical Abstract, vol. 99, (1983), 99:214153v, Water-insoluble Salts of Cationic Dyes, p. 90.

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