3642764

Information

• Patent Grant
• 3642764

• References
• Source

• Patent Number

  3,642,764

• Date Filed

  Not available

• Date Issued

  Tuesday, February 15, 1972
  53 years ago

• CPC

  • C07C255/00 - Carboxylic acid nitriles
  • C09B33/06 - in which the coupling component is a diamine or polyamine
  • C09B39/00 - Other azo dyes prepared by diazotising and coupling
  • C09B43/00 - Preparation of azo dyes from other azo compounds
  • C09B44/101 - characterised by the coupling component having an amino directing group
  • C09B62/0061 - with coupling components containing an amino directing group
  • C09B62/01 - Disazo or polyazo dyes

• US Classifications

  • 534 - Organic compounds
  • 549 - Organic compounds
  • 560 - Organic compounds
  • 564 - Organic compounds