Hindered phenyl phosphites Patent #: 4094855
ApplicationNo. 05/866748 filed on 01/03/1978
US Classes:524/119, Two or more phosphorus rings252/400.24, Trivalent P (e.g., phosphorous acid, phosphites, etc.)524/117, Oxygen ring atom524/583, Organic NRM additive524/585, From ethylene as sole reactant monomer524/929, Natural rubber broadly disclosed, nonclaimed558/85, Acyclic divalent chalcogen single bonded directly to the ring phosphorus (e.g., cyclic phosphites, etc.)987/40, Two or more rings contain at least one P(O) group and wherein at least two P atoms in the two rings are bonded solely to O, or wherein the compound contains two P atoms in a single ring and all bonds of the P atoms are to O (includes spiro rings) (9/6574A6)987/41, P(O) group containing ring is part of a condensed or bridged carbocyclic ring system (9/6574A4)987/47, Two or more rings contain at least one P-O bond and wherein at least two P atoms in the two rings are bonded to S (includes spiro) (9/6571A6)987/48P(O) containing ring is part of a condensed or bridged ring carbocyclic system (9/6571A4)
ExaminersPrimary: Taylor, Hosea E.
Assistant: White, R. A.
Attorney, Agent or Firm
International ClassesC08K 5/00 (20060101)
C08K 5/527 (20060101)
C08K 5/5398 (20060101)
C07F 9/00 (20060101)
C07F 9/6571 (20060101)
C07F 9/6574 (20060101)
AbstractAlkylated 1,1'-biphenyl-2,2'-diyl phosphiates are prepared by reacting alkylated 2,2'-biphenol with phosphorus trichloride in an organic solvent an then reacting the intermediate with an alcohol or a thiol. Said phosphites are useful as stabilizers of organic polymers and lubricating oils, especially as process stabilzers for polyolefins, polyesters and polycarbonates.