US 4,049,378 AGranted

Dyestuff preparations

AssigneeBayer Aktiengesellschaft

InventorsHermann Perrey, Jurgen Schulze, Hans Jurgen Rosenkranz, Hans Rudolph, Reinhold Hornle

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Abstract

The invention relates to dyestuff preparations which contain A. dyestuffs which are insoluble in tetrachloroethylene, B. dispersing agents of the formula R.sup.1 [--NHCO--(O--CHR.sup.2 --CHR.sup.3).sub.X --(O--CHR.sup.4 --CHR.sup.5).sub.y --R.sup.6 --].sub.n wherein R.sup.1 denotes a hydrocarbon radical such as remains after removing n isocyanate groups from a corresponding isocyanate, n is a number from 1 to 6 R.sup.2 - r.sup.5 denote hydrogen, alkyl, phenyl or chloromethyl, X represents the number 0 - 100 and Y represents the number 0 to 50 and R.sup.6 denotes O--aryl, O--aralkyl, O--alkaryl, O--CO--alkyl, O--CO--aryl, NH--CO--alkyl, NH--SO.sub.2 --alkyl or O--alkyl and C. optionally, organic solvents of low volatility. The preparations are extremely suitable for the dyeing textile materials from organic, water-immiscible solvents.

Claims3

Dependent claims

Dyestuff preparations for dyeing textile materials from organic water-immiscible solvents, which are characterised in that they contain

a. dyestuffs having a particle size of less than 10.mu. and which are sparingly soluble or insoluble in tetrachloroethylene;
b. dispersing agents of the formula
R.sup.7 [--NHCO--(O--CHR.sup.8 --CH.sub.2).sub.z --R.sup.9 ].sub.m
wherein
R.sup.7 denotes an alkyl or aryl radical which contains one or two isocyanuric acid radicals and is optionally substituted by methyl groups, such as remains after removing m isocyanate groups from a corresponding m-functional isocyanate,
m is the number 3 or 4,
R.sup.8 denotes hydrogen or methyl,
z represents the numbers 0-30 and
R.sup.9 denotes O-alkyl or O-CO-alkyl, in each case with 8-20 C atoms in the alkyl radical, or O-phenylalkyl with 6-15 C atoms in the alkyl radical,
with the proviso that z represents 1-30 if R.sup.9 denotes O--CO--alkyl or O-phenylalkyl;
and
c. an organic solvent comprising phthalic acid C.sub.1 -C.sub.8 -dialkyl ester.

9 more elements

Dependencies are inferred from the claim text.