3003989

Information

• Patent Grant
• 3003989

• References
• Source

• Patent Number

  3,003,989

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1961
  63 years ago

• CPC

  • D21H21/28 - Colorants; Pigments or opacifying agents
  • C08K5/0041 - Optical brightening agents, organic pigments
  • C08K5/16 - Nitrogen-containing compounds
  • C08K5/20 - Carboxylic acid amides
  • C08K5/23 - Azo-compounds
  • C09B1/36 - Dyes with acylated amino groups
  • C09B1/363 - the acyl groups being residues of a dicarboxylic compound forming a bridge between two anthraquinones
  • C09B43/10 - with formation of a new azo or an azoxy bridge
  • C09B43/36 - with amino-anthracene or amino-anthraquinone dyes
  • C09B56/12 - Anthraquinone-azo dyes
  • C09D11/037 - characterised by the pigment
  • D01F1/06 - Dyes
  • D06P1/44 - using insoluble pigments or auxiliary substances

• US Classifications

  • 524 - Synthetic resins or natural rubbers
  • 008 - Bleaching and dyeing
  • 552 - Organic compounds