Title:
【発明の名称】有機顔料の安定化
Document Type and Number:
Japanese Patent JP3484484
Kind Code:
B2
Abstract:
Pigment compositions containing a) at least one organic pigment from the group consisting of azopigments, quinacridones, phthalocyanines, indanthrones, flavanthrones, pyranthrones, anthraquinones, perylenes, dioxazines, perinones, thioindigo, isoindolines, isoindolinones and metal complexes, and b) from 1 to 100% by weight, based on the pigment, of a nitroxyl compound comprising at least one unsubstituted or substituted 5-, 6- or 7-membered heterocyclic ring containing a divalent group of the formula in which R1 and R2, independently of one another, are methyl, ethyl or phenyl or together form an aliphatic ring having 4-12 members, L is an aromatic radical Y is O., or of an acid-addition salt thereof. These pigments compositions are distinguished by excellent light and weathering stability.
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Inventors:
Laurent Cassotto
Application Number:
JP7088493A
Publication Date:
January 06, 2004
Filing Date:
March 05, 1993
Export Citation:
Assignee:
Ciba Specialty Chemicals Holding Incorporated
International Classes:
C08K5/32; C08J3/20; C08K5/00; C08K5/34; C08K5/3432; C09B67/00; C09B67/20; C09D7/00; (IPC1-7): C09B67/20; C08J3/20; C08K5/3432; C09B67/00
Domestic Patent References:
| JP299323A | ||||
| JP63290863A |
Attorney, Agent or Firm:
Nobuo Kaida (3 outside)