3426021

Information

• Patent Grant
• 3426021

• References
• Source

• Patent Number

  3,426,021

• Date Filed

  Not available

• Date Issued

  Tuesday, February 4, 1969
  55 years ago

• CPC

  • C07F9/6533 - Six-membered rings
  • C07F9/505 - Preparation; Separation; Purification; Stabilisation
  • C07F9/5304 - Acyclic saturated phosphine oxides or thioxides
  • C07F9/5308 - substituted by B, Si, P or a metal
  • C07F9/5312 - substituted by a phosphorus atom
  • C07F9/5325 - Aromatic phosphine oxides or thioxides (P-C aromatic linkage)
  • C07F9/5329 - Polyphosphine oxides or thioxides
  • C07F9/587 - directly bonded
  • C07F9/591 - the phosphorus atom is bonded to a cyclic nitrogen atom, directly, through one or more heteroatoms or through a hydrocarbon chain which may be broken by one or more heteroatoms

• US Classifications

  • 544 - Organic compounds
  • 546 - Organic compounds
  • 549 - Organic compounds
  • 556 - Organic compounds
  • 562 - Organic compounds
  • 568 - Organic compounds
  • 987 - Organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system