Patents by Inventor Robert J. Axelrod

Robert J. Axelrod 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).

  • Patent number: 5223563
    Abstract: Thermoplastic polymer compositions comprise a polyphenylene ether resin, s styrene resin and a hygroscopic salt in an amount sufficient to provide the compositions with antistatic properties. Preferably, the hygroscopic salt comprises lithium chloride and is included in an amount of from about 0.5 to about 5 parts by weight per hundred parts by weight resins.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: June 29, 1993
    Assignee: General Electric Company
    Inventor: Robert J. Axelrod
  • Patent number: 5164132
    Abstract: Ultra-fine polymeric fibers are produced from various polymeric materials by mixing with thermoplastic poly(vinyl alcohol) and extruding the mixture through a die followed by further orientation. The poly(vinyl alcohol) is extracted to yield liberated ultra-fine polymeric fibers. The polymer utilized can include post-consumer polymer waste.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: November 17, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lloyd M. Robeson, Robert J. Axelrod, Jeffrey A. Kuphal, Timothy L. Pickering
  • Patent number: 5120598
    Abstract: A novel product is disclosed for cleaning up oil spills. The product comprises ultra-fine polymeric fibers which are produced from various polymeric materials by mixing with thermoplastic poly(vinyl alcohol) and extruding the mixture through a die followed by further orientation. The poly(vinyl alcohol) is extracted to yield liberated ultra-fine polymeric fibers. The fibers are ultimately processed into said product, such as a mat, which is placed directly on the oil spill to absorb the oil.
    Type: Grant
    Filed: August 2, 1991
    Date of Patent: June 9, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lloyd M. Robeson, Robert J. Axelrod, Thomas A. Manuel
  • Patent number: 5034459
    Abstract: The melt flow behavior of blends of polyphenylene ether resins and alkenyl aromatic resins such as high impact polystyrene can be markedly improved by incorporation therein of effective amounts of styrene-alpha methyl styrene copolymers.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: July 23, 1991
    Assignee: General Electric Co.
    Inventors: William R. Haaf, Robert J. Axelrod
  • Patent number: 4959481
    Abstract: Novel flame retardant agents comprise polyalkylene oxides or a derivative thereof and end-capped with brominated phthalimide groups, and have the general formulae ##STR1## R.sup.1 is alkylene of from about 2 to about 6 carbon atoms; R.sup.1 is alkyl of from about 1 to about 6 carbon atoms; n is from about 4 to about 40; n' is from about 3 to about 15; and n" is from about 1 to about 10. Thermoplastic compositions, for example, polyphenylene ether compositions, rendered flame retardant with the novel compounds have a high resistance to additive vaporization and surface liquid exudation as well as desirable high flow characteristics.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: September 25, 1990
    Assignee: General Electric Company
    Inventors: Robert J. Axelrod, Donald B. G. Jaquiss, John A. Tyrell
  • Patent number: 4826919
    Abstract: The melt flow behavior of blends of polyphenylene ether resins and alkenyl aromatic resins such as high impact polystyrene can be markedly improved by incorporation therein of effective amounts of styrene-alpha methyl styrene copolymers.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: May 2, 1989
    Assignee: General Electric Company
    Inventors: William R. Haaf, Robert J. Axelrod
  • Patent number: 4743637
    Abstract: Novel flame retardant agents comprise polyalkylene oxides or a derivative thereof end-capped with brominated phthalimide groups, and have the general formulaeR--R.sup.1 --O--R.sup.1).sub.n R (I)(R--R.sup.1 --O--R.sup.1).sub.n' NH).sub.2 C.dbd.O (II)orR--R.sup.1 --OR.sup.1).sub.n" CH.sub.2).sub.3 C--R.sup.2 (III)wherein R is ##STR1## R.sup.1 is alkylene of from about 2 to about 6 carbon atoms; R.sup.1 is alkyl of from about 1 to about 6 carbon atoms; n is from about 4 to about 40; n' is from about 3 to about 15; and n" is from about 1 to about 10. Thermoplastic compositions, for example, polyphenylene ether compositions, rendered flame retardant with the novel compounds have a high resistance to additive vaporization and surface liquid exudation as well as desirable high flow characteristics.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: May 10, 1988
    Assignee: General Electric Company
    Inventors: Robert J. Axelrod, Donald B. G. Jaquiss, John A. Tyrell
  • Patent number: 4680342
    Abstract: Flame retardant alkenyl aromatic compounds which are vinylbenzyl diaryl phosphine oxides and a method for their preparation are described. They may be polymerized into higher molecular weight flame retardant materials which, in turn, may be admixed with polyphenylene ether resins to form thermoplastic flame resistant molding compositions. The present materials are more resistant to losses in the flame retardancy upon thermal processing, e.g., molding, because the active flame retardant agent, phosphorus, is chemically bound to the polymeric matrix.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: July 14, 1987
    Assignee: General Electric Company
    Inventors: Robert J. Axelrod, Glenn D. Cooper, deceased
  • Patent number: 4624979
    Abstract: A method for increasing the heat distortion temperature of certain blends of polyphenylene ether resin and styrene polymers is described in which an admixture is formed of a polyphenylene ether resin and a flame retardant copolymer of styrene and up to 50 percent dibromostyrene. The resulting compositions can be formulated to include one or more additional ingredients and are moldable into articles characterized by good flame retardancy and light stability, as well as a higher heat distortion temperature compared with articles formed from corresponding blends using homopolystyrene or styrene-bromostyrene copolymer.
    Type: Grant
    Filed: November 28, 1984
    Date of Patent: November 25, 1986
    Assignee: General Electric Company
    Inventors: Robert J. Axelrod, Glenn D. Cooper
  • Patent number: 4562011
    Abstract: Aryl phosphates are prepared by a procedure in which a diaryl cabonate is reacted with phosphoric acid or a phosphate derived from the acid, using an added source of hydrogen ions, for instance, methanesulfonic acid, to catalyze the reaction.
    Type: Grant
    Filed: November 28, 1983
    Date of Patent: December 31, 1985
    Assignee: General Electric Company
    Inventor: Robert J. Axelrod
  • Patent number: 4526917
    Abstract: Flame retardant admixtures of triaryl phosphates and a resin as well as a process for preparation are described. The triaryl phosphate mixture includes at least one phosphate where 1 or 2 of the 3 aryl groups are mesityl and the remaining group or groups are independently selected from among phenyl and xylyl. The triaryl phosphate mixture provides better flame retardancy per unit weight of phosphorous than, for instance, triphenyl phosphate alone or trimesityl phosphate alone.
    Type: Grant
    Filed: February 23, 1984
    Date of Patent: July 2, 1985
    Assignee: General Electric Company
    Inventor: Robert J. Axelrod
  • Patent number: 4520152
    Abstract: Flame retardant compositions comprising a polyphenylene ether resin, a styrene resin and a cyclic phosphonate have excellent appearance and physical properties after molding. Especially useful is diphenyl pentaerythritol diphosphonate.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: May 28, 1985
    Assignee: General Electric Company
    Inventor: Robert J. Axelrod
  • Patent number: 4507436
    Abstract: The melt viscosity of thermoplastic compositions of polyphenylene ether resin and rubber modified high impact polystyrene resin is significantly reduced by inclusion of a tetra-alkyl bisphenol polycarbonate resin. The resulting blend can be processed at lower temperatures, and, after molding, exhibits better UV color stability while retaining most important other physical properties. Both the compositions and a method of preparation are described.
    Type: Grant
    Filed: January 13, 1983
    Date of Patent: March 26, 1985
    Assignee: General Electric Company
    Inventors: Robert J. Axelrod, John R. Campbell, Sai-Pei Ting
  • Patent number: 4483953
    Abstract: Polyphenylene ether resins and resin compositions in admixture with trineopentylene diphosphite as a thermal oxidative stabilizer are described. These can be used with or without an impact modifier for the polyphenylene ether resin. An additional benefit is that the resins and compositions exhibit a higher heat distortion temperature.
    Type: Grant
    Filed: September 12, 1983
    Date of Patent: November 20, 1984
    Assignee: General Electric Company
    Inventor: Robert J. Axelrod
  • Patent number: 4478970
    Abstract: Blends of a polyphenylene ether resin, optionally containing an impact modifier, are filled with finely divided particulate clay which is characterized by a very narrow size distribution, 98 percent or more of the particles being less than 2 microns in diameter, and a very small particle size, with the particles having mean equivalent spherical diameter of from 0.2 to 0.4 microns. This particular clay filler provides rigidity and stiffness, as expected, but with better retention of other physical properties which are normally adversely affected by other mineral fillers, such as larger particle size clay and titanium dioxide. Adhesion between this clay and the polymer, which is already good, is further enhanced by pre-cleaning the clay particles to remove surface dirt, chemicals and salts.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: October 23, 1984
    Assignee: General Electric Company
    Inventors: Visvaldis Abolins, Robert J. Axelrod, Peter H. Shu
  • Patent number: 4401792
    Abstract: A process is provided for increasing the rate of crystallization of polyester compounds, such as poly (alkylene arylates), more particularly poly(alkylene terephthalates), or blends or mixtures thereof, as for example, poly(ethylene terephthalate), poly(butylene terephthalate) or mixtures of blends thereof, by incorporating therein a small amount of a polyethylene ionomer, or an alkali metal salt of benzoic acid, such as sodium benzoate. The faster crystallization rates improve injection molding performance of the polyesters and blends thereof, such as reduced post-mold shrinkage, faster mold cycle times and lower mold temperature. Also, the resultant products show increases in physical properties such as flex modulus, flex strength, deflection temperature under load (DTUL), tensile strength and solvent resistance.
    Type: Grant
    Filed: March 16, 1982
    Date of Patent: August 30, 1983
    Assignee: General Electric Company
    Inventors: Robert J. Axelrod, Frank N. Liberti, John Semen
  • Patent number: 4390477
    Abstract: Flame retardant compositions comprising a polyphenylene ether resin, a styrene resin and a cyclic phosphonate have excellent appearance and physical properties after molding. Especially useful is diphenyl pentaerythritol diphosphonate.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: June 28, 1983
    Assignee: General Electric Company
    Inventor: Robert J. Axelrod
  • Patent number: 4385146
    Abstract: Thermoplastic molding compositions of a polyphenylene ether resin and optionally an impact modifier are improved by addition of a minor amount of tribenzylphosphine oxide which depresses the viscosity and enhances the melt flow of the resin.
    Type: Grant
    Filed: October 20, 1981
    Date of Patent: May 24, 1983
    Assignee: General Electric Company
    Inventor: Robert J. Axelrod
  • Patent number: 4312803
    Abstract: Thermally stable polycarbonate compositions are obtained by admixing with a high molecular weight aromatic polycarbonate resin a stabilizing amount of a bisphosphite.
    Type: Grant
    Filed: March 16, 1979
    Date of Patent: January 26, 1982
    Assignee: General Electric Company
    Inventors: Ronald L. Markezich, Gary L. Freimiller, Walter K. Olander, Robert J. Axelrod
  • Patent number: 4276233
    Abstract: Thermally stable polycarbonate compositions are obtained by admixing with a high molecular weight aromatic polycarbonate resin a stabilizing amount of a hindered phenol phosphite.
    Type: Grant
    Filed: July 16, 1979
    Date of Patent: June 30, 1981
    Assignee: General Electric Company
    Inventors: Ronald L. Markezich, Walter K. Olander, Robert J. Axelrod