Back to results
US 4,229,178 AGranted
Dye compositions
AssigneeVelsicol Chemical Corporation
InventorsRemus I. Lazar, Richard C. Reichel
Life of this patent
Estimating the term…
Abstract
This invention discloses compositions and methods for dyeing natural proteinaceous and synthetic polyamide fibers, particularly wool, silk and nylons, utilizing dye assistants effective both with acid and disperse dyes, such assistants being combinations of a mixture of lower esters of chlorinated benzoic acids with a mixture of lower alkyl esters of toluic and benzoic acids.
Claims5
A dye composition for synthetic polyamide fibers comprised of forty percent or more of the condensation product of 4,4'-diamino-dicyclohexyl methane and decanodicarboxylic acid having the bias repeating unit:
- ##STR2## which comprises:
- A. One part of weight C. I. Disperse Blue 79 dye and
- B. From 1 to 20 parts by weight of a dye assistant comprised of a combination of:
- (a) from about 10 to about 90 weight percent of a mixture of lower alkyl esters of mono- and di-chlorinated benzoic acids;
- and
- (b) from about 90 to about 10 weight percent of a mixture of lower alkyl esters of toluic and benzoic acids.
3 more elements
Dependencies are inferred from the claim text.