Bleaching and dyeing; fluid treatment and chemical modification – Reactive dye composition – process – or product – Alkylene sulfato – halotriazine – halodiazine,...
Patent
1997-02-10
1998-06-30
Einsmann, Margaret
Bleaching and dyeing; fluid treatment and chemical modification
Reactive dye composition, process, or product
Alkylene sulfato, halotriazine, halodiazine,...
8594, 8597, 8599, 8602, 8603, 8661, D06P 1382, C09B 62503
Patent
active
057726990
ABSTRACT:
An aqueous reactive dye composition is disclosed. The aqueous reactive dye composition has improved storage stability and contains a water-soluble reactive dye and a chelating agent. The chelating agent is present in a sufficient concentration to maintain the pH of the aqueous reactive dye composition in the range of about 3.0 to about 7.0 and, preferably, about 5.0 to about 6.5. Desirable chelating agents are dicarboxylic acids, such as succinic acid, or amino carboxylates, such as nitrilotriacetic acid. A method of stabilizing an aqueous reactive dye composition is disclosed and includes the step of dissolving a polycarboxylic acid or an amino carboxylate in an aqueous solution of a water-soluble reactive dye in a sufficient concentration to stabilize the pH of the composition.
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Crompton & Knowles Corporation
Einsmann Margaret
Grandinetti Paul
Reitenbach Daniel
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