Stable pigments

Details Stable pigments Stable pigments

1975-07-15

1976-10-12

Garvin, Patrick P.

Compositions: coating or plastic

Materials or ingredients

106309, 2603145, C04B 3100

Patent

active

039855694

ABSTRACT:
The preparation of pigment compositions with a base of copper phthalocyanine is disclosed, which pigments are stable to crystallization.
There is incorporated in the copper phthalocyanine pigments to be stabilized a compound of the formula:
Wherein Pc represents phthalocyanine, A represents alkyl, cycloalkyl, unsubstituted aralkyl or aralkyl substituted by low molecular weight alkyl groups, and n is a number from 1 to 8.
The stabilized pigment compositions according to the invention are particularly well suited for coloring printing inks.

REFERENCES:
patent: 3296008 (1967-01-01), Pugin
patent: 3536502 (1970-10-01), Von et al.
patent: 3764361 (1973-10-01), Kienzle et al.
patent: 3767442 (1973-10-01), Kienzle et al.

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