Non-aqueous pigment dispersions using dispersion synergists

Details Non-aqueous pigment dispersions using dispersion synergists Non-aqueous pigment dispersions using dispersion synergists

2006-11-28

2009-12-15

Klemanski, Helene (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Marking

C106S498000, C106S506000

Reexamination Certificate

active

07632346

ABSTRACT:
A non-aqueous pigment dispersion includes a diketopyrrolo-pyrrole pigment, a polymeric dispersant, and a dispersion synergist in a non-aqueous dispersion medium wherein the dispersion synergist is a diketopyrrolo-pyrrole derivative according to Formula (I):wherein R1, R2, and R3, are independently selected from the group consisting of hydrogen, a halogen atom, a methyl group, an ethyl group, an tert.-butyl group, a phenyl group, a cyano group, and an acid group; R4-, R5, and R6are independently selected from the group consisting of hydrogen, a halogen atom, a methyl group, an ethyl group, an tert.-butyl group, a phenyl group, and a cyano group; and wherein one of R7and R8is a group including two acid functions while the other one of R7and R8represents hydrogen.

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