Back to results
US 6,197,103 B1Granted
Pigment composition
AssigneeZeneca Limited
InventorsPeter Kingsley Davies, John David Schofield, John Michael McCarthy
Life of this patent
Estimating the term…
Abstract
A composition of copper phthalocyanines containing, on average, from 0.1 to 3 methyl groups per phthalocyanine nucleus. The composition is suitable for the coloration of paints and plastics materials.
Claims8
A composition comprising
- (a) a mixture of copper phthalocyanines containing, on average, from 0.1 to 3 methyl groups per phthalocyanine nucleus;
- and
- (b) a deflocculating agent comprising a copper phthalocyanine containing up to four basic groups selected from those of Formulae (1) and (2),
- wherein,
- R1 & R2 are each independently H or C1-4-alkyl;
- and
- R is selected from alkylene, alkenylene and cycloalkylene.
4 more elements
Dependencies are inferred from the claim text.