Black perylene pigments

Details Black perylene pigments Black perylene pigments

2005-02-04

2008-08-26

Green, Anthony J (Department: 1793)

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

C106S031600, C106S031770, C106S494000, C252S008570, C430S004000, C430S108150, C430S108200, C430S108210, C524S090000

Reexamination Certificate

active

07416601

ABSTRACT:
Black perylene pigments which comprise one of the isomers of the formula Ia or Ibin whichR1, R2are each independently phenylene, naphthylene or pyridylene, each of which may be mono- or polysubstituted by C1-C12-alkyl, C1-C6-alkoxy, hydroxyl, nitro, and/or halogen;X is halogen;n Is from 0 to 4,or comprises a mixture of both isomers and has a blackness value ≧210 in an alkyd/melamine baking varnish.

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