WARP-FREE PIGMENT COMPOSITIONS COMPRISING PHTHALOCYANINE PIGMENTS

摘要

The invention provides a composition comprising particles of an optionally halogenated phthalocynine (a); from 0.5 to 10% weight, preferably from 2 to 8% by weight, based on the optionally halogenated phthalocyanine (a), or a vinylic or acrylic polymer (b); and from 1 to 15% by weight, preferably from 3 to 10% by weight, based on the optionally halogenated phthalocyanine (a), of an optionally halogenated phthalocyanine (c) which is outside the particles of the optionally halogenated phthalocyanine (a) and is substituted by a group comprising at least 1 hetero atom selected from the group consisting of N, O , S and P and at least 3 carbon atoms. The instant compositions comprising thr ee essential components are surprisingly warpfree in substrate such as partiall y crystalline plastics, especially those processed by injection moulding. Geometrically identical parts of different colours are obtained.