Patent · US Expired

Stable finely dispersed aqueous formulations of disperse dyes and optical brighteners, and their use

US4218218A · kind A · utility

16Cited by

10References

8Claims

0Family size

Assignee

BASF SE

Inventors

Ewald Daubach · Ludwigshafen, DE
Manfred Herrmann
Knut Oppenlaender · Ludwigshafen, DE
Karl Stork · Eisenberg (Pfalz), DE

Key dates

Filing date	Oct 4, 1978
Grant date	Aug 19, 1980
Priority date	—
Expiry date	Oct 4, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S516/03
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to an aqueous disperse dye or optical brightener formulation which comprises PA0 (a) from 5 to 55 percent by weight, based on (a+c), of one or more finely divided dyes, optical brighteners or mixtures of these, PA0 (b) from 10 to 200 percent by weight, based on (a), of a water-soluble surfactant of the formula ##STR1## where X is from 0 to a mean value of 125, Y is from a mean value of 37 to a mean value of 250, but if X is >37, Y:X is at least 1:1, Z is 0 or 1 and Me.sym. is an alkali metal ion, or mixtures of such surfactants, PA0 (c) from 45 to 95 percent by weight, based on (a+c) of water or of a mixture of water and a water-retaining agent, with or without PA0 (d) further additives conventionally present in aqueous formulations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.