3646222

Information

• Patent Grant
• 3646222

• References
• Source

• Patent Number

  3,646,222

• Date Filed

  Not available

• Date Issued

  Tuesday, February 29, 1972
  53 years ago

• CPC

  • C07C37/16 - by condensation involving hydroxy groups of phenols or alcohols or the ether or mineral ester group derived therefrom
  • C07C41/30 - by increasing the number of carbon atoms
  • C07C46/06 - of at least one hydroxy group on a six-membered aromatic ring
  • C07C50/06 - with unsaturation outside the quinoid structure
  • C07C50/14 - with unsaturation outside the ring system
  • C07C50/28 - with monocyclic quinoid structure

• US Classifications

  • 568 - Organic compounds
  • 552 - Organic compounds