Title:
AZO PIGMENT* ITS MANUFACTURE AND METHOD OF COLORING HIGH POLYMER ORGANIC MATERIAL BY USE OF SAID PIGMENT
Document Type and Number:
Japanese Patent JPS5630464
Kind Code:
A
Abstract:
The present invention relates to valuable novel azo pigments of the formula (I) wherein A is a benzene residue, X is a SO3 or CO2 group, Y is a substituent that does not confer solubility in water, M is a monovalent or bivalent metal atom, and n is 1 or 2. Examples of substituents that do not confer solubility in water are: halogen, e.g. chlorine or bromine, methyl, C1-C4 alkoxy, cyano, alkanoylamino containing 1 to 4 carbon atoms, and especially nitro and trifluoromethyl. In addition to containing the specified substituents, the benzene residue A can contain further substituents, e.g. chlorine atoms or methyl groups. Suitable metals are monovalent metals such as alkali metals, e.g. Na, K or Li, but preferably bivalent metals such as Mg, Ca, Sr, Ba, Mn, Co, Ni, Cu or Zn. However, M can also comprises mixtures of such metals. The novel pigments produce in plastics materials yellow to red colorations of excellent fastness to light, migration and atmospheric influences and also excellent heat resistance.
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Inventors:
ARUMANDO ROITSUCHIE
Application Number:
JP11095980A
Publication Date:
March 27, 1981
Filing Date:
August 12, 1980
Export Citation:
Assignee:
CIBA GEIGY AG
International Classes:
C09B29/52; C09B63/00; (IPC1-7): C09B29/09
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