3337521

Information

• Patent Grant
• 3337521

• References
• Source

• Patent Number

  3,337,521

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1967
  57 years ago

• CPC

  • D06P1/12 - prepared in situ
  • C09B33/04 - in which the coupling component is a dihydroxy or polyhydroxy compound
  • C09B33/22 - Trisazo dyes of the type A->B->K<-C
  • C09B35/40 - the component K being a dihydroxy or polyhydroxy compound
  • C09B35/52 - of the type
  • C09B45/00 - Complex metal compounds of azo dyes
  • C09B45/48 - Preparation from other complex metal compounds of azo dyes

• US Classifications

  • 534 - Organic compounds
  • 008 - Bleaching and dyeing