3843625

Information

• Patent Grant
• 3843625

• References
• Source

• Patent Number

  3,843,625

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1974
  50 years ago

• CPC

  • C09B5/00 - Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
  • C09B23/143 - the ethylene chain carrying a COOH or a functionally modified derivative, e.g.-CN, -COR, -COOR, -CON=, C6H5-CH=C-CN
  • C09B29/366 - containing hydroxy-1,2-diazoles
  • C09B39/00 - Other azo dyes prepared by diazotising and coupling
  • C09B43/206 - with formation of OCXN or OSO2N group
  • C09B44/04 - from coupling components containing amino as the only directing group
  • C09B51/00 - Nitro or nitroso dyes
  • C09B62/443 - the reactive group being alternatively specified
  • C09B62/78 - with other reactive groups
  • C09B69/00 - Dyes not provided for by a single group of this subclass
  • C09B69/001 - Dyes containing an onium group attached to the dye skeleton via a bridge

• US Classifications

  • 534 - Organic compounds
  • 546 - Organic compounds
  • 552 - Organic compounds
  • 558 - Organic compounds
  • 560 - Organic compounds