3684808

Information

• Patent Grant
• 3684808

• References
• Source

• Patent Number

  3,684,808

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1972
  52 years ago

• CPC

  • C09B69/00 - Dyes not provided for by a single group of this subclass
  • C09B1/206 - Dyes with amino groups substituted by heterocyclic radicals
  • C09B1/325 - Dyes with no other substituents than the amino groups
  • C09B1/467 - attached to two or more anthraquinone rings
  • C09B1/585 - substituted by aryl radicals
  • C09B3/00 - Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
  • C09B3/38 - by introduction of hydrocarbon or acyl residues into amino groups
  • C09B3/82 - Preparation from starting materials already containing the condensed anthracene nucleus
  • C09B5/00 - Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
  • C09B5/10 - Isothiazolanthrones Isoxazolanthrones Isoselenazolanthrones
  • C09B5/32 - 1.3 azoles of the anthracene series
  • C09B5/34 - Anthraquinone acridones or thioxanthrones
  • C09B5/44 - Azines of the anthracene series
  • C09B5/62 - Cyclic imides or amidines of peri-dicarboxylic acids of the anthracene, benzanthrene, or perylene series
  • C09B11/08 - Phthaleins; Phenolphthaleins; Fluorescein
  • C09B43/18 - by acylation of hydroxyl group or of mercapto group
  • C09B62/024 - Anthracene dyes

• US Classifications

  • 544 - Organic compounds
  • 534 - Organic compounds