Patents Represented by Attorney F. Wesley Turner
  • Patent number: 4048143
    Abstract: A process is disclosed which provides for the reduction of the occurrence of oxidative and/or thermal degradation of polyphenylene oxides by contacting the oxides with a capping agent in the presence of a water soluble base, a catalytic phase transfer agent, and, optionally, an effective organic phase reducing agent. The resulting capped polyphenylene oxides can be used to prepare improved articles of manufacture using conventional techniques such as molding, vacuum forming, extrusion, etc.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: September 13, 1977
    Assignee: General Electric Company
    Inventors: Allan S. Hay, Dwain M. White
  • Patent number: 4035408
    Abstract: A process comprising (1) hydroformylation of allyl acetate or 1-propenyl acetate to form isomeric acetoxybutyraldehydes, and (2) recycle of the mixture obtained by dehydroformylation of at least a portion of the acetoxybutyraldehyde isomers as feedstock in (1).
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: July 12, 1977
    Assignee: General Electric Company
    Inventor: William E. Smith
  • Patent number: 4033982
    Abstract: A process for the preparation of 3,4,5-trithiapolycyclo compounds is described which comprises the reaction of sulfur with bicyclo[2.2.1]hept-2-ene compounds carried out in the presence of (1) a phenol, and (2) a base. The process can be carried out either in the absence or presence of an inert organic solvent. The trithiapolycyclic compounds produced by this process are useful as monomers in the synthesis of polymers which can be employed as additives for lubricants, to produce effective coatings on solid substrates, or to produce fibers and films.
    Type: Grant
    Filed: January 21, 1976
    Date of Patent: July 5, 1977
    Assignee: General Electric Company
    Inventor: Allan S. Hay
  • Patent number: 4029841
    Abstract: A process for molding an article having preselected portions formed of different organic plastic materials is described which comprises (a) positioning at least a first skin material essentially free of reinforcing fillers and at least a first core material containing reinforcing fillers in an elongated heating zone at preselected locations of the materials relative one to the other; (b) heating the materials to a temperature sufficient to melt each of the materials while maintaining said materials at their preselected relative positions; (c) exerting a force against an end of the melted materials; (d) linearly moving the melted material in response to the force through the heating zone and into a mold cavity; and (e) cooling at least the first skin and first core materials in the mold cavity. The process can be employed advantageously to provide substantially distortion free injection molded products having glass fiber filled large thin walled sections.
    Type: Grant
    Filed: February 14, 1975
    Date of Patent: June 14, 1977
    Assignee: General Electric Company
    Inventor: Lawrence R. Schmidt
  • Patent number: 4028341
    Abstract: An improved process for the preparation of high molecular weight polyphenylene oxides by oxidatively coupling a di-ortho-substituted phenol with an oxygen-containing gas under polymer-forming reaction conditions in a liquid reaction system is provided by using a specific copper-amine complex soluble in the reaction mixture comprising copper ion, bromide ion, a specific class of hindered secondary diamines and a specific group of tertiary monoamines. The process is characterized by a reaction system which (1) results in the formation of higher molecular weight polymer in a given reaction time or polymer of comparable molecular weight in substantially decreased reaction time, (2) permits the use of extremely low copper-to-phenol ratio, and (3) permits the reaction to be carried out in a solvent system where the water of reaction forms a separate phase without the necessity of removing the water phase.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: June 7, 1977
    Assignee: General Electric Company
    Inventor: Allan S. Hay
  • Patent number: 4028297
    Abstract: This invention is concerned with a new class of flame retardant polycarbonate compositions. More particularly, the invention is concerned with an admixture of an aromatic polycarbonate and a flame retardant additive selected from an alkali or alkaline earth metal salt of an inorganic sulfur compound. The flame retardant polycarbonates can be molded or formed into fire-retardant articles, such as films, sheets, fibers, laminates, or reinforced plastics by conventional techniques.
    Type: Grant
    Filed: July 18, 1975
    Date of Patent: June 7, 1977
    Assignee: General Electric Company
    Inventor: Jimmy L. Webb
  • Patent number: 4024294
    Abstract: A protective coating is provided for nickel-base and cobalt-base superalloys which is highly resistant to corrosion and oxidation in a fused Na.sub.2 SO.sub.4 environment at elevated temperatures. The superalloy body is coated by physical vapor deposition with a composition consisting essentially of 50-80% by weight of cobalt and 20-50% by weight of chromium. Optionally, the body may then be coated with an overlayer of aluminum and heat treated to cause interdiffusion of aluminum into the undercoating and thereby enhance the hot corrosion and oxidation resistance of the superalloy body.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: May 17, 1977
    Assignee: General Electric Company
    Inventor: John R. Rairden, III
  • Patent number: 4011378
    Abstract: Polyacetylenes, either homopolymers or copolymers, are rendered more soluble and/or more thermally stable without destroying their film-forming properties and with minimal decrease in their high carbon content by reacting them with one or more 2,3,4,5-tetrasubstituted cyclopentadiones commonly called tetracyclones. These latter compounds, together with the acetylenic groups of the polymer, undergo a cyclization reaction to produce a 3,4,5,6-tetrasubstituted 1,2-phenylene moiety in the polymer backbone. Because of their high thermal stability these polymers are especially useful as binders for graphite fibers in making graphite composites or to produce films or coatings for high temperature applications.
    Type: Grant
    Filed: June 29, 1972
    Date of Patent: March 8, 1977
    Assignee: General Electric Company
    Inventor: Dwain M. White
  • Patent number: 3998603
    Abstract: A protective coating is provided for nickel-base and cobalt-base superalloys which is highly resistant to corrosion in a fused Na.sub.2 SO.sub.4 environment at elevated temperatures. The superalloy body is coated by physical vapor deposition with a thin layer of nickel-chromium alloy and then coated with a still thinner layer of aluminum and thereafter heat treated to strengthen the body and improve its rupture life while bonding the alloy coating to the body and diffusing the aluminum coating into the alloy coating and forming a chromium diffusion barrier in the nickel-chromium layer.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: December 21, 1976
    Assignee: General Electric Company
    Inventor: John R. Rairden, III
  • Patent number: 3989531
    Abstract: Bromobiphenols comprising 2,2' ,6,6'-tetraalkyl-3,3',5,5'-tetrabromo-1,1'-biphenols and derivatives thereof are employed as fire-retardant additives for normally flammable resins yielding fire-retardant polymeric compositions. These fire-retardant compositions are thermally stable and can be molded or formed into fire-retardant articles, such as films, sheeting, fibers, laminates, or reinforced plastics by conventional techniques.
    Type: Grant
    Filed: March 12, 1974
    Date of Patent: November 2, 1976
    Assignee: General Electric Company
    Inventors: Charles M. Orlando, Francois A. Lavallee
  • Patent number: 3983093
    Abstract: This invention is concerned with a new class of polyetherimides. More particularly, the invention is concerned with polyetherimides derived from the reaction of an organic diamine, a bisphenol dianhydride and a dianhydride selected from the class consisting of pyromellitic dianhydride, a sulfur dianhydride, and a benzophenone dianhydride. The polyetherimide compositions have improved solvent resistance which enhances their value in a wide variety of uses including films, molding compounds, coatings, etc.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: September 28, 1976
    Assignee: General Electric Company
    Inventors: Frank J. Williams, III, Paul E. Donahue
  • Patent number: 3979460
    Abstract: A process for the preparation of an organomercaptophenol is described which comprises the reaction of sulfur with a 2,6-disubstituted phenol carried out in the presence of (1) a base, (2) an activated olefin or an epoxy compound, (3) and a solvent with a high dielectric constant. The organomercaptophenols produced by this process are useful as monomers in the synthesis of esters, carbonates, ethers, epoxy compounds, among many other chemicals synthesized from monohydric phenols. In addition, the oganomercaptophenols are also useful as antioxidants.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: September 7, 1976
    Assignee: General Electric Company
    Inventor: Allan S. Hay
  • Patent number: 3979534
    Abstract: A method of forming a high temperature oxidation resistant coating on a thoria dispersion strengthened nickel-chromium alloy body is provided. The method includes applying to the surface of the body a first coating of metallic cobalt, diffusing the cobalt into the body, and thereafter subjecting the body to a second coating of aluminum.
    Type: Grant
    Filed: July 26, 1974
    Date of Patent: September 7, 1976
    Assignee: General Electric Company
    Inventor: John R. Rairden, III
  • Patent number: 3972851
    Abstract: A process for the preparation of polyphenylene oxide employing a manganese (II) ortho-hydroxyareneoxime chelate catalyst is described. The process can be effectively carried out both in the absence as well as in the presence of amines. The process is economical and useful in the production of polyphenylene oxide resins.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: August 3, 1976
    Assignee: General Electric Company
    Inventor: Walter K. Olander
  • Patent number: 3965069
    Abstract: A process for the preparation of polyphenylene oxide employing a mixture comprising a manganese(II) oxime chelate Type (A) and a manganese chelate Type (B) as a catalyst is described. The catalyzed process can be effectively carried out in the presence as well as the absence of an amine. The process is economical and useful in the production of polyphenylene oxide resins.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: June 22, 1976
    Assignee: General Electric Company
    Inventor: Walter K. Olander
  • Patent number: 3959223
    Abstract: Novel redox diphenoquinone-diphenohydroquinone polymers and derivatives thereof are described. The novel redox polymers are useful as oxidizing and reducing agents, antioxidants, stabilizers in dielectric compositions, semi-conductor polymeric ingredients as well as redox ion exchange resins.
    Type: Grant
    Filed: January 21, 1974
    Date of Patent: May 25, 1976
    Assignee: General Electric Company
    Inventor: Allan S. Hay
  • Patent number: 3956403
    Abstract: Bromobiphenols containing at least two bromine atoms meta to the phenolic hydroxyl groups can be produced from 3,3',5,5'-tetra-substituted diphenoquinones by reacting the latter with bromine. The reaction can be controlled to produce little, if any, by-product. The products obtained are dependent to some extent on the substituents in the four positions ortho to the hydroxyl groups. The biphenols can be used as antioxidants or as starting materials for preparation of flame-retardent polymeric compositions useful in the molding, coating and insulating arts.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: May 11, 1976
    Assignee: General Electric Company
    Inventors: Charles M. Orlando, Francois A. Lavallee
  • Patent number: 3956242
    Abstract: A process for the preparation of polyphenylene oxide employing a manganese(II) .omega.-hydroxyoxime chelate catalyst is described. The process can be effectively carried out both in the absence as well as in the presence of amines. The process is economical and useful in the production of polyphenylene oxide resins.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: May 11, 1976
    Assignee: General Electric Company
    Inventor: Walter K. Olander
  • Patent number: 3953519
    Abstract: A process for the preparation of a thiobis-2,6-disubstituted phenol is described which comprises the reaction of sulfur with a 2,6-disubstituted phenol carried out in the presence of (1) a base, (2) and an activated olefin or an epoxy compound. Thiobisphenols produced by this process are useful as monomers in the synthesis of polyesters, polycarbonates, polyethers, epoxy resins, among many other chemicals synthesized from polyhydric phenols. In addition, the thiobisphenols are also useful as antioxidants.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: April 27, 1976
    Assignee: General Electric Company
    Inventor: Allan S. Hay
  • Patent number: 3952063
    Abstract: A process for the preparation of an organomercaptophenol is described which comprises the reaction of sulfur with a phenol carried out in the presence of (1) a base, and (2) an activated olefin or an epoxy compound. The organomercaptophenols produced by this process are useful as monomers in the synthesis of esters, carbonates, ethers, epoxy compounds, among many other chemicals synthesized from monohydric phenols. In addition, the organomercaptophenols are also useful as antioxidants.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: April 20, 1976
    Assignee: General Electric Company
    Inventor: Allan S. Hay