Thomas Henry Chambers

US Patent:

56931034, Dec 2, 1997

Filed:

Jan 24, 1997

Appl. No.:

8/790358

Inventors:

Thomas Van Chambers - Rock Hill SC
Christine Feuchtner - Bornheim, DE

Assignee:

Dystar, L.P. - Charlotte NC

International Classification:

D06P 3872

US Classification:

8532

Abstract:

A single bath process for exhaust dyeing polyester and cotton fiber blends by the use of a fiber reactive, vinyl sulfone dye in admixture with a disperse dye under alkaline pH conditions.

US Patent:

47625244, Aug 9, 1988

Filed:

Feb 5, 1987

Appl. No.:

7/011171

Inventors:

Thomas V. Chambers - Rock Hill SC
Manfred Deicke - Charlotte NC
Suzanne C. Fleming - Warwick RI

Assignee:

Hoechst Celanese Corporation - Somerville NJ

International Classification:

C09B 6204
C09B 6220
C09B 6700

US Classification:

8549

Abstract:

This invention is directed to a dyestuff composition comprising the reaction product of a water-soluble, vinyl-sulfone type, reactive dye and a N-alkyl-amino-alkyl sulfonic acid and/or carboxylic acid or the salts thereof wherein the N-alkyl-amino-alkyl acid or salt is reacted with said dye in an amount of about 0. 5 to 1. 0 mole per mole of dye. This dyestuff composition is used to dye synthetic polyamides according to a process where said composition is applied to a polyamide fiber from an aqueous solution having a pH from about 3 to about 4; preferably 3. 5 and then fixed to said fiber by heat.