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) Patents (Class 987/40)
  • Diphosphites
    Patent number: 5736599
    Abstract: A diphosphite is provided derived from phosphorous trihalide, tetra alkyl hindered bisphenol, and a neoalkyl diol. The phosphites exhibit improved stability and are useful as thermal oxidative stabilizers for thermoplastic compositions.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: April 7, 1998
    Assignee: General Electric Company
    Inventor: James A. Mahood
  • Diphosphites
    Patent number: 5618961
    Abstract: A diphosphite is provided derived from phosphorous trihalide, tetra alkyl hindered bisphenol, and a neoalkyl diol. The phosphites exhibit improved stability and are useful as thermal oxidative stabilizers for thermoplastic compositions.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: April 8, 1997
    Assignee: General Electric Company
    Inventor: James A. Mahood
  • Diphosphites
    Patent number: 5618962
    Abstract: A diphosphite is provided derived from phosphorous trihalide, tetra alkyl hindered bisphenol, and a neoalkyl diol. The phosphites exhibit improved stability and are useful as thermal oxidative stabilizers for thermoplastic compositions.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: April 8, 1997
    Assignee: General Electric Company
    Inventor: James A. Mahood
  • Diphosphites
    Patent number: 5523448
    Abstract: A diphosphite is provided derived from phosphorous trihalide, tetra alkyl hindered bisphenol, and a neoalkyl diol. The phosphites exhibit improved stability and are useful as thermal oxidative stabilizers for thermoplastic compositions.
    Type: Grant
    Filed: July 22, 1993
    Date of Patent: June 4, 1996
    Assignee: General Electric Company
    Inventor: James A. Mahood
  • Carbohydrate substituted dibenzo[d,f][1,3,2]dioxaphosphepin stabilizers
    Patent number: 5414028
    Abstract: Carbohydrate substituted dibenzo[d,f][1,3,2]dioxaphosphepin compounds of formula I ##STR1## where A is a carbohydrate residue are effective stabilizers for polymers processed at elevated temperatures and subject to thermal or oxidative degradation.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: May 9, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Stephen D. Pastor, Joseph E. Babiarz
  • Carbohydrate substituted dibenzo[D,G][1,3,2]dioxaphosphocin stabilizers
    Patent number: 5356962
    Abstract: Carbohydrate substituted dibenzo[d,g][1,3,2]dioxaphosphocin compounds of formula I ##STR1## where A is a carbohydrate residue are effective stabilizers for polymers processed at elevated temperatures and subject to thermal or oxidative degradation.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: October 18, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Stephen D. Pastor, Joseph E. Babiarz