Pigment formulations

Details Pigment formulations Pigment formulations

1980-01-29

1981-03-10

Poer, James

Compositions: coating or plastic

Materials or ingredients

106308N, C09C 302

Patent

active

042552036

ABSTRACT:
A pigment formulation which comprises (a) a finely divided organic pigment and (b) one or more urea derivatives of the formula K--(NH--CO--NH--R).sub.2, where R is C.sub.12 -C.sub.18 -alkyl, C.sub.12 -C.sub.18 -alkenyl, C.sub.8 -C.sub.18 -alkoxypropyl or --(CH.sub.2).sub.3 --O--(C.sub.2 H.sub.4 O).sub.n --R.sup.1, R.sup.1 is C.sub.2 -C.sub.8 -alkyl or phenyl, n is 1, 2, 3 or 4 and K is 1,5-naphthylene or 4,4'-diphenylenemethane, with or without (c) up to 5% by weight, based on (a and b), of agents conventionally present in pigment formulations.
In binder solutions, the pigment formulations give printing inks and paints possessing excellent tinctorial properties.
Some of the compounds (b) prevent the conversion of .alpha.-copper phthalocyanine to the .beta.-modification.

REFERENCES:
patent: 3560235 (1971-02-01), Sarfas et al.
patent: 4042413 (1977-08-01), Hauxwell et al.
patent: 4119478 (1978-10-01), Robertson
patent: 4129455 (1978-12-01), Thompson et al.
patent: 4157266 (1979-06-01), Hauxwell et al.

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