Warp-free pigment compositions comprising phthalocyanine...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

Reexamination Certificate

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Reexamination Certificate

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10512794

ABSTRACT:
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 three essential components are surprisingly warpfree in substrate such as partially crystalline plastics, especially those processed by injection moulding. Geometrically identical parts of different colours are obtained.

REFERENCES:
patent: 4189423 (1980-02-01), Kumano et al.
patent: 4233206 (1980-11-01), Katsura et al.
patent: 5250111 (1993-10-01), Langley et al.
patent: 5271759 (1993-12-01), Wooden et al.
patent: 5274010 (1993-12-01), Bugnon et al.
patent: 5830267 (1998-11-01), Zambounis et al.
patent: 6123761 (2000-09-01), Healy
patent: 6409956 (2002-06-01), Flandrin et al.
patent: 0498667 (1992-08-01), None
patent: 1036824 (2000-09-01), None
patent: 03-12431 (1991-01-01), None
patent: 98/41570 (1998-09-01), None
P. Bugnon et al., Chimia, vol. 48, No. 9, pp. 436-439.
Chem. Abstr. 1979:73304 for JP 53121845 (1978).
Chem. Abstr. 1983:127147 for JP 57159831 (1982).

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