C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/426, 260/166
C09B 45/14 (2006.01) C09B 45/48 (2006.01) C09B 55/00 (2006.01) C09B 67/24 (2006.01) C09B 69/04 (2006.01) D06P 1/40 (2006.01)
Patent
CA 1097619
ABSTRACT OF THE DISCLOSURE This invention concerns a range of amino-acid salts of anionic dyestuffs which have a high solubility in organic solvents, particularly oxygenated, halogenated and amido organic solvents. The amino-acid dyestuff salts have the general formula: Image (1) wherein Am+ is an amino-acid portion of the formula: Image (2) in which R1, R2 and R3 are each independently of one another, selected from the group consisting of a hydrogen atom, a linear alkyl, a branched alkyl, phenyl, alkylphenyl, phenylalkyl, alkoxyalkyl, alkylaminoalkyl, alkylamido- alkyl group, the alkyl group or moiety if present containing 1 to 29 carbon atoms and a cycloalkyl group containing 3 to 7 carbon atoms, or one or each of R2 and R3 is a group of the formula - L2 - COOH L1 and L2 are each, independently of one another, a group of the formula: - (CR4R5)x - where R4 and R5 are each, independently of one another, selected from the group consisting of a hydrogen atom, a linear alkyl group, a branched alkyl group, a phenyl group and an amino group and x is an integer, An- is an anionic dyestuff portion having an n-fold negative charge, which anionic dyestuff portion is a metallized azo or azomethine dye wherein the ratio of metal part to dye part is 1:1 or 1:2 and when the said ratio is 1:2 each said dye part may be the same or different. Cat+ is a cationic radical, n is an integer, q is 0 or an integer less than n, and when q is greater than 1, each of the cations may be the same or different.
292699
Paskins Keith N.
Redman Duncan C.
Turner Ian D.
Fetherstonhaugh & Co.
Williams (hounslow) Limited
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