3853841

Information

• Patent Grant
• 3853841

• References
• Source

• Patent Number

  3,853,841

• Date Filed

  Not available

• Date Issued

  Tuesday, December 10, 1974
  50 years ago

• CPC

  • C09B51/00 - Nitro or nitroso dyes
  • 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
  • C09B39/00 - Other azo dyes prepared by diazotising and coupling
  • C09B43/11 - by introducing hydrocarbon radicals or substituted hydrocarbon radicals on primary or secondary amino groups
  • C09B43/24 - with formation of -O-SO2-R or -O-SO3H radicals
  • C09B44/02 - containing ammonium groups not directly attached to an azo group
  • C09B44/04 - from coupling components containing amino as the only directing group
  • C09B44/107 - characterised by a cyclammonium five-membered specific ring not mentioned hereafter: thiadiazolium, (benz)oxazolium
  • C09B44/14 - 1, 2-Diazoles or hydrogenated 1,2-diazoles Pyrazolium; Indazolium
  • C09B44/18 - having three nitrogen atoms as the only ring hetero atoms
  • C09B44/20 - Thiazoles or hydrogenated thiazoles
  • 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

• US Classifications

  • 534 - Organic compounds