Dyestuff compositions containing sulfo-methylated phenolic-formaldehyde resin dispersants stabilized with urea or ammonia
Abstract
Abstract DYESTUFF COMPOSITIONS FOR USE IN DYEING SYNTHETIC AND NATURAL FIBERS, COMPRISING AN ADMIXTURE OF A DYE CAKE, E.G., DISPERSE DYES OR VAT DYES, AND UP TO 75% BY WEIGHT OF THE TOTAL MIXTURE OF A DISPERSANT OF A MODIFIED PHENOLICFORMALDEHYDE TYPE RESIN. THE DISPERSANTS OF THIS INVENTION ARE PHENOLIC-FORMALDEHYDE RESINS THAT ARE SULFOMETHYLATED AND CONTAIN FROM 1-13 MOLES OF SULFOMETHYLATION PER 1000 GRAMS OF THE STARTING RESIN. THE DISPERSANTS MAY ALSO BE CORSS-LINKED TO TAILOR THEIR MOLECULAR WEIGHT AND THEN STABILIZED WITH UREA OR AMMONIA, THESE DYE DISPERSANTS ARE LIGHT IN COLOR, EXCELLENT DISPERSANTS, PRODUCE HEAT STABLE DYE DISPERSIONS, LESSEN OR ELIMINATE FIBER STAINING, DIAZO DYE REDUCTION AND FOAMING PROBLEMS ASSOCIATED WITH DISPERSE DYES. THESE DISPERSANTS MAY ALSO BE USED IN COMBINATION WITH OTHER DYE DISPERSANTS, SUCH AS, SULFONATED LIGNINS OR SULFONATED NAPTHALENE PRODUCTS, TO OPTIMIZE THE ADVANTAGEOUS PROPERTIES OF EACH DISPERSANT.
Inventors
- 👤 S Falkehag
- 👤 C Bailey
Bibliographic Details
Claims Analysis
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