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US 2004/0198964 A1Published application
Pigmented 1-naphtholsulphonic acid-based monoazo pigments
AssigneeClariant GmbH
InventorsHans Joachim Metz, Uday T. Nabar, Frank Morgenroth, Chandrashekhar D Patil, Sunil D. Deval
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Abstract
The invention relates to novel monoazo compounds of formula (1), wherein R1 represents H, Cl or CH3; R2 represents H or Cl; M2+ represents Mg2+, Mn2+ or Sr2+; Y1=represents COO− or SO3−; Y2═SO3−, Y3═Y4═Y5═H; or Y3═SO3−, Y2═Y4═Y5═H; or Y4═SO3−, Y2═Y3═Y5═H; or Y5═SO3−, Y2═Y3═Y4═H. The compounds of formula (1) are characterized by high intensity and lightfastness.
Claims8
1) A compound of the general formula (1)
- 4
- where
- R1 is H, Cl or CH3,
- R2 is H or Cl,
- M2+ is Mg2+, Mn2+ or Sr2+,
- Y1═COO− or SO3−, and
- Y2═SO3−, Y3═Y4═Y5═H;
- or Y3═SO3−, Y2═Y4═Y5═H;
- or
- Y450 SO3−, Y2═Y3═Y5═H;
- or Y5═SO3−, Y2═Y3═Y4═H.
8 more elements
Dependencies are inferred from the claim text.