Patents by Inventor Gary R. Faler

Gary R. Faler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for the purification of ion exchange resins used in the production of bisphenol A
    Patent number: 4847432
    Abstract: A method for treating a sulfonic acid-containing ion exchange resin to remove destabilizing impurities therefrom is disclosed. The method comprises contacting the resin with a base, followed by contact with a strong acid. The treated ion exchange resin is particularly suitable for use as a catalyst in the preparation of bisphenol A.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: July 11, 1989
    Assignee: General Electric Company
    Inventor: Gary R. Faler
  • Substantially pure spirobiindane bisphenols and method for their preparation
    Patent number: 4791234
    Abstract: Spirobiindane bisphenols of high purity, suitable for conversion to high molecular weight polycarbonates, are prepared by reacting a bisphenol or 4-isopropenylphenol with a metal halide Lewis acid or an alkanesulfonic acid, followed by removing impurities including phenols, 1-(4-hydroxyphenyl)indanols and the like. A step of purification by precipitation with water from a methanol-methylene chloride solution is included.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: December 13, 1988
    Assignee: General Electric Company
    Inventors: Gary R. Faler, Jerry C. Lynch
  • Method for maximizing yield and purity of bisphenol A
    Patent number: 4766254
    Abstract: Product losses and color formation are sometimes encountered in the synthesis of bisphenol A from phenol and acetone in the presence of a cation exchange resin, particularly in the crude product stream from which bisphenol A has been separated via its phenol adduct. Such losses are suppressed and the crude product stream stabilized and decolorized by contact with an anion exchange resin.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: August 23, 1988
    Assignee: General Electric Company
    Inventors: Gary R. Faler, Michael J. Cipullo
  • Method for preparing spirobiindane bisphenols
    Patent number: 4701566
    Abstract: Spirobiindane bisphenols are prepared by contacting a mixture of a bisphenol or a 4-isopropenylphenol and a 1-(4-hydroxyphenyl)indanol with a metal halide Lewis acid or an alkanesulfonic acid. High purity spirobiindane bisphenols may be prepared by employing a purification sequence, which preferably includes a step of precipitation of the product with water from a methanol-methylene chloride solution.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: October 20, 1987
    Assignee: General Electric Company
    Inventors: Gary R. Faler, Jerry C. Lynch
  • Method for making bisphenol catalysts
    Patent number: 4455409
    Abstract: A method is provided for making sulfonated aromatic organic polymers having aminoorganomercaptan groups attached to backbone sulfonyl radicals by covalent nitrogen-sulfur linkages. These sulfonated aromatic organic polymers can be used as an ion-exchange resin for making bisphenols.
    Type: Grant
    Filed: December 2, 1982
    Date of Patent: June 19, 1984
    Assignee: General Electric Company
    Inventors: Gary R. Faler, John R. Campbell
  • Catalyst for synthesizing bisphenol and method for making same
    Patent number: 4424283
    Abstract: A sulfonated organic polymer, such as a sulfonated polystyrene ion-exchange resin is provided having organic mercaptan groups attached to backbone sulfone radicals by covalent nitrogen-sulfur linkages. A method for making such sulfonated organic polymer is also provided. The ion-exchange resin can be used to effect phenol-ketone condensation in the synthesis of bisphenols.
    Type: Grant
    Filed: January 25, 1982
    Date of Patent: January 3, 1984
    Assignee: General Electric Company
    Inventors: Gary R. Faler, Geroge R. Loucks
  • Method and catalyst for making bisphenol
    Patent number: 4396728
    Abstract: A sulfonated aromatic organic polymer, such as sulfonated polystyrene ion-exchange resin, is provided having N-alkylaminoorgano mercaptan groups attached to backbone sulfonyl radicals by covalent nitrogen-sulfur linkages. The ion-exchange resin can be used to effect phenol-ketone condensation in the synthesis of bisphenols.
    Type: Grant
    Filed: September 2, 1981
    Date of Patent: August 2, 1983
    Assignee: General Electric Company
    Inventor: Gary R. Faler
  • Method for making bisphenol
    Patent number: 4375567
    Abstract: A method is provided for making bisphenol-A based on the condensation of acetone and phenol in the presence of an ion-exchange resin. Improved yields of 2,2-bis(4-hydroxyphenyl)propane is achieved by recycling bisphenol-A reaction mixture containing significant amounts of 2,4'-dihydroxy-2,2-diphenyl propane based on the use of a macroreticular ion-exchange resin.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: March 1, 1983
    Assignee: General Electric Company
    Inventor: Gary R. Faler
  • Process for the production of bisphenols
    Patent number: 4365099
    Abstract: A method of improving the performance of cationic exchange catalysts used in the production of bisphenols from phenolic compounds and carbonyl compounds by pretreating the phenolic compound with a chelating resin to remove metallic impurities.
    Type: Grant
    Filed: May 12, 1981
    Date of Patent: December 21, 1982
    Assignee: General Electric Company
    Inventors: Gary R. Faler, Ashok K. Mendiratta
  • Method and catalyst for making bisphenol
    Patent number: 4346247
    Abstract: A sulfonated polystyrene ion-exchange resin is provided having organo mercaptan groups attached to backbone sulfone radicals by covalent nitrogen-sulfur linkages. The ion-exchange resin can be used to effect phenol-ketone condensation in the synthesis of bisphenols.
    Type: Grant
    Filed: July 24, 1981
    Date of Patent: August 24, 1982
    Assignee: General Electric Company
    Inventors: Gary R. Faler, George R. Loucks
  • Method and catalyst for making bisphenol
    Patent number: 4294995
    Abstract: A sulfonated polystyrene ion-exchange resin is provided having organo mercaptan groups attached to backbone sulfone radicals by covalent nitrogen-sulfur linkages. The ion-exchange resin can be used to effect phenol-ketone condensation in the synthesis of bisphenols.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: October 13, 1981
    Assignee: General Electric Company
    Inventors: Gary R. Faler, George R. Loucks