3643269

Information

• Patent Grant
• 3643269

• References
• Source

• Patent Number

  3,643,269

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  53 years ago

• CPC

  • C09B33/00 - Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
  • C09B33/06 - in which the coupling component is a diamine or polyamine
  • C09B43/14 - with phosgene or thiophosgene
  • D06P3/241 - using acid dyes
  • Y10S8/924 - Polyamide fiber

• US Classifications

  • 008 - Bleaching and dyeing
  • 534 - Organic compounds