3873615

Information

• Patent Grant
• 3873615

• References
• Source

• Patent Number

  3,873,615

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1975
  49 years ago

• CPC

  • C09B62/825 - Monoazo dyes
  • C07C43/225 - containing halogen
  • C07C43/253 - containing hydroxy or O-metal groups
  • C07C49/675 - having three rings
  • C07D231/54 - condensed with carbocyclic rings or ring-systems
  • C09B1/34 - sulfonated
  • C09B43/003 - Cyclisation of azo dyes; Condensation of azo dyes with formation of ring
  • C09B43/1247 - with formation of NHSO2R or NHSO3H radicals

• US Classifications

  • 562 - Organic compounds
  • 534 - Organic compounds
  • 548 - Organic compounds
  • 552 - Organic compounds
  • 568 - Organic compounds