Pigment compositions

Claim 2

A pigment composition consisting essentially of as the base material a base organic pigment and as the additive the derivative of a starting organic pigment in the ratios by weight of 100 : 0.5-30, the base and starting organic pigments being different from, or identical with, each other and the derivative being represented by the following general formula ##EQU1## wherein D is the residue of the starting organic pigment, A is a carbonyl or sulfonyl group, R 1 and R 2 are each a hydrogen atom, non-substituted or substituted alkyl group containing 1- 18 carbon atoms, cycloalkyl group, aryl group or heterocyclic residue, or they may form a ring, R 3 is a hydrogen atom or lower alkyl group, n is an integer of from 1 to 2 and m is an integer of from 1 to 4.

Claim 3

A pigment composition as claimed in claim 1, wherein the organic pigment derivative (I) is prepared by reacting, in an inert solvent, a compound represented by the following general formula (II) ##STR6## wherein D is the residue of an organic pigment, R 3 is a hydrogen atom or lower alkyl group and m is an integer of from 1 to 4, with a member selected from the group consisting of monochloroacetyl and monobromoacetyl chloride and bromide, β-chloroproplonyl and β-bromopropionyl chloride and bromide, acrylyl chloride and bromide, and vinylsulfonyl chloride and bromide to produce a compound having the general formula (III) or (III') ##STR7## wherein D,A,R 3 and M are as defined above and X is a chlorine or bromine atom, and further reacting the thus-produced compound (III) or (III") with a member selected from the group consisting of primary and secondary amino compounds respectively represented by the following formulae ##STR8## wherein R 1 and R 2 are each a hydrogen atom, non-substituted or substituted alkyl group containing 1-18 carbon atoms, cycloalkyl group, aryl group or heterocyclic residue, thereby to obtain the pigment derivative (I).

Claim 4

A pigment composition as claimed in claim 1, wherein the organic pigment derivative (I) is prepared by reacting, in polyphosphoric acid or a concentrated sulfuric acid, an organic pigment with paraformaldehyde and a member selected from the group consisting of monochloroacetamide, monobromoacetamide, monochloroacetalkylamide, monobromoacetalkylamide, β-chloropropionamide and its alkylamides, β-bromopropionamide and its alkylamides, β-chloroethylsulfonamide and β-bromoethylsulfonamide, to produce a compound having the general formula (III) and then reacting the thus-produced compound (III) with a member selected from the group consisting of primary and a secondary amino compounds respectively represented by the following formulae ##STR9## wherein R 1 and R 2 are each a hydrogen atom, nonsubstituted or substituted alkyl group containing 1- 18 carbon atoms, cycloalkyl group, aryl group or heterocyclic residue to obtain the pigment derivative (I).

Claim 5

A pigment composition as claimed in claim 1, wherein the base organic pigment and the starting organic pigment include phthalocyanine, quinacridone, thioindigo, dioxazine, isoindolinone, quinophthalone, azo, imidazole, anthraquinone and perylene type pigments.

Claim 6

A pigment composition as claimed in claim 2, wherein the primary and secondary amino compounds include methylamine, ethylamine, propylamine, isopropylamine, n-butylamine, isobutylamine, n-amylamine, isoamylamine, n-hexylamine, ocytlamine, 2-ethylhexylamine, decylamine, dodecylamine, stearylamine, dimethylamine, diethylamine, di-n-butylamine, diamylamine, diethanolamine, 2-ethylaminoethanol, 2-dodecylaminoethanol, cyclopentylamine, cyclohexylamine, aniline, o-, m- and p-toluidines, o-, m- and p-methoxyanilines, benzylamine, α-naphtylamine, piperidine, pipecoline, pyrrolidine, morpholine, 2-diethylaminoethylamine, 3-diethylaminopropylamine, α-piperidinoethylamine, N-methylaniline, N-ethylaniline, N-ethyl-m-toluidine, 2,4-dimethylaniline, 2,5-dimethylaniline and α-anilinoethylamine.

Claim 7

A pigment composition as claimed in claim 1, wherein the base organic pigment is a phthalocyanine type pigment.

Claim 8

A pigment composition as claimed in claim 6, wherein the starting organic pigment is a phthalocyanine type pigment.

Claim 9

A pigment composition as claimed in claim 2, wherein the reaction between the compound (III) or (III') and the primary or secondary amino compound is carried out at 60°-150°C using the amino compound in excessive amounts in water or an inert solvent.

Claim 10

A pigment composition as claimed in claim 3, wherein the reaction between the compound (III) or (III') and the primary or secondary amino compound is carried out at 60°-150°C using the amino compound in excessive amounts in water or an inert solvent.

Claim 11

A paint consisting essentially of a film-forming ingredient, a solvent therefor and the pigment composition of claim 1 in the ratios by weight of 100 : 400 or less : 60 or less.

Claim 12

A printing ink consisting essentially of a film-forming ingredient, a solvent therefor and the pigment composition of claim 1 in the ratios by weight of 100 : 400 or less : 60 or less.