Bleaching and dyeing; fluid treatment and chemical modification – Dye concentrate composition wherein an additional amount of... – Highly viscous dye concentrate – e.g. – paste – etc.
Patent
1985-11-19
1987-06-16
Clingman, A. Lionel
Bleaching and dyeing; fluid treatment and chemical modification
Dye concentrate composition wherein an additional amount of...
Highly viscous dye concentrate, e.g., paste, etc.
8527, 8589, 8597, 8599, 8680, 8937, C09B 6700
Patent
active
046734104
ABSTRACT:
The present disclosure is concerned with enhancing the solubility of dispersed anionic dyes upon the dilution of their dispersions with room temperature water. Concentrated dispersions of such dyes with acceptable stability and low shear viscosities are disclosed which are more readily diluted to dissolve the dispersed dyestuff because they contain certain chelating agents are described. These agents have at least one free or appropriately neutralized acid group, with carboxylic acid groups being preferred. The appropriae cations include ammonium or lithium ions. The free acid groups are subsequently neutralized with these appropriae cations so that the final dispersions are preferably about neutral, i.e have pH values about 7. A further improvement to the dilutability by the addition of a surfactant, preferably a non-ionic surfactant, is also discssed. The preferred dispersions dilute to a solution free of particles visible to the unaided human eye within three minutes of being combined at a rate of three grams of dispersion per liter of room temperature water.
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Sandefur Charles W.
Thomas Thomas J.
Clingman A. Lionel
Harsh Gene
Mobay Corporation
Pope Lawrence S.
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