Amine modified sulfonated lignin for disperse dye

Details Amine modified sulfonated lignin for disperse dye Amine modified sulfonated lignin for disperse dye

1998-03-10

1999-10-26

Einsmann, Margaret

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Polymeric additive

8557, 8662, 8905, 8912, 8913, 8915, 8561, D06P 150

Patent

active

059720476

ABSTRACT:
Dyestuff compositions are provided which incorporate amine modified sulfonated lignins. The disclosed dyestuff compositions exhibit improved heat stability and, as a result of the higher activity of the amine modified sulfonated lignin, less dispersant is present in the exhaust liquor and waste treatment demands are thereby reduced. The presence of tertiary amine groups in sulfonated kraft, sulfomethylated kraft, and sulfite lignins provide dispersants with package dyeing heat stabilities significantly better than those of the unmodified lignins. The improved package dyeing grinding aid/dispersant of the invention is prepared by reacting sulfonate lignin with a secondary amine using formaldehyde and alkaline conditions.

REFERENCES:
patent: 2709696 (1955-05-01), Weish et al.
patent: 2863780 (1958-12-01), Ball, Jr.
patent: 4732572 (1988-03-01), Dilling
patent: 4764597 (1988-08-01), Dilling

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