3712881

Information

• Patent Grant
• 3712881

• References
• Source

• Patent Number

  3,712,881

• Date Filed

  Not available

• Date Issued

  Tuesday, January 23, 1973
  52 years ago

• CPC

  • C07C255/00 - Carboxylic acid nitriles
  • C07D333/38 - Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen
  • C09B33/06 - in which the coupling component is a diamine or polyamine
  • C09B33/12 - in which the coupling component is a hetero-cyclic compound
  • C09B43/00 - Preparation of azo dyes from other azo compounds
  • C09B43/12 - by acylation of amino groups
  • C09B44/02 - containing ammonium groups not directly attached to an azo group
  • C09B44/20 - Thiazoles or hydrogenated thiazoles

• US Classifications

  • 534 - Organic compounds
  • 008 - Bleaching and dyeing
  • 106 - Compositions: coating or plastic
  • 549 - Organic compounds
  • 558 - Organic compounds