Heterocyclic-substituted quinacridone pigments

Details Heterocyclic-substituted quinacridone pigments Heterocyclic-substituted quinacridone pigments

1998-05-20

1999-02-09

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

106 3175, 106 3176, 106 3178, 106495, 106498, 546 49, 546 56, C09B 4800

Patent

active

058688285

ABSTRACT:
This invention relates to quinacridone pigments of formula (I) ##STR1## wherein X is O, S, or NR;

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S.S. Labana and L.L. Labana, "Quinarcridones" in Chemical Review, 67, 1-18 (month unavailable) 1967.

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