3691149

Information

• Patent Grant
• 3691149

• References
• Source

• Patent Number

  3,691,149

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1972
  52 years ago

• CPC

  • C09B33/153 - in which the coupling component is a bis-(aceto-acetyl amide) or a bis-(benzoyl-acetylamide)
  • C09B43/32 - by reacting carboxylic or sulfonic groups, or derivatives thereof, with amines by reacting keto-groups with amines
  • C09B43/38 - by reacting two or more ortho-hydroxy naphthoic acid dyes with polyamines

• US Classifications

  • 534 - Organic compounds
  • 560 - Organic compounds