Patent ID: 7211609

Claim:
A composition for non-warping pigmentation of semi-crystalline plastics comprising particles of an unsubstituted or halogen substituted phthalocyanine (a); a vinylic or acrylic polymer (b); and from 1 to 15% by weight based on the unsubstituted or halogen substituted phthalocyanine (a), of an optionally halogenated phthalocyanine (c) which is physically outside the particles of the unsubstituted or halogen substituted phthalocyanine (a) and which optionally halogenated phthalocyanine (c) is substituted by a group comprising at least 1 hetero atom selected from N, O, S and P which group also comprises at least 3 carbon atoms, wherein said composition comprises in total from 0.5 to 10% by weight vinylic or acrylic polymer based on the unsubstituted or halogen substituted phthalocyanine (a).