Patents Assigned to Borg-Warner Chemicals, Inc.
  • Patent number: 5143955
    Abstract: Polymer blend compositions having improved flammability performance comprise a polyphenylene ether resin, a high impact polystyrene resin, a flame retardant and a high molecular weight polystyrene resin having a weight average molecular weight, Mw, greater than about 400,000.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: September 1, 1992
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Ronald Kendall, deceased, Ronald H. Place, Renate I. Warren
  • Patent number: 5132370
    Abstract: An improved method for carboxylating styrenic resins and particularly impact-modified styrenic resins such as ABS resins, by melt-processing a mixture comprising the styrenic resin, an ethylenically-unsaturated carboxylic compound, and, optionally, a free-radical generator.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: July 21, 1992
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Thomas S. Grant, David V. Howe
  • Patent number: 5077342
    Abstract: An improved method for carboxylating styrenic resins and particularly impact-modified styrenic resins such as ABS resins, by melt-processing a mixture comprising the styrenic resin, an ethylenically-unsaturated carboxylic compound, and, optionally, a free-radical generator.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: December 31, 1991
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Thomas S. Grant, David V. Howe
  • Patent number: 4963620
    Abstract: Thermoplastic blend compositions comprise a polyphenylene ether resin, a polyamide resin and a compatibilizing agent present in an amount sufficient to effect compatibilization of the polyphenylene ether resin and the polyamide resin. The compatibilizing agent comprises a compound selected from the group consisting of tetracarboxylic acids of aromatic and alicyclic compounds and dianhydride derivatives thereof, and halogen substituted phthalic anhydrides.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: October 16, 1990
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Thomas S. Grant, Ronald L. Jalbert
  • Patent number: 4923924
    Abstract: Thermoplastic blend compositions comprise a polyamide, a carboxylated polyphenylene ether resin and an impact modifier. The carboxylated polyphenylene ether resin is the product of melt mixing a mixture consisting essentially of polyphenylene ether resin and a minor amount of an ethylenically unsaturated carboxylic acid compound. The impact modifier may comprise a graft of a vinyl aromatic polymer on a rubbery substrate; a vinyl aromatic-conjugated diene-vinyl aromatic triblock polymer; a carboxylated vinyl aromatic-conjugated diene-vinyl aromatic triblock polymer; a carboxylated alpha-olefin polymer; a copolymer of an alpha-olefin compound and an unsaturated carboxylic compound; a graft of a rigid acrylic polymer on a rubber substrate; a linear low density polyethylene; or mixtures thereof.
    Type: Grant
    Filed: March 22, 1988
    Date of Patent: May 8, 1990
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Thomas S. Grant, Ronald L. Jalbert, David Whalen, Brenda A. Bartges, Tracey L. Thompson
  • Patent number: 4886855
    Abstract: Polymer blend compositions comprise polycarbonate, styrene-acrylonitrile-maleic anhydride terpolymer and ABS resin. The ABS resin is included in the blends in amounts less than 20 weight percent and contains at least 40 weight percent of a diene rubber substrate. The blends exhibit high heat deflection temperatures and good impact strength and modulus.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: December 12, 1989
    Assignee: Borg-Warner Chemicals, Inc.
    Inventor: Charles F. Parsons
  • Patent number: 4885413
    Abstract: A process and composition for stabilizing ar-brominated styrene polymer against polymerization which mixes an ar-brominated styrene monomer with a stabilizing amount of N,N-dialkylhydroxylamine to produce a stabilized monomer and novel stabilized compositions.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: December 5, 1989
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Stephen M. Campbell, John C. Wozny
  • Patent number: 4866126
    Abstract: Polymer blend compositions comprise a polyphenylene ether polymer, a styrene-acrylonitrile polymer and a copolymer compatiblizing agent in an amount sufficient to effect improved compatability between the polyphenylene ether polymer and the styrene-acrylonitrile polymer. The copolymer compatabilizing agent comprises a graft copolymer of A graft polymerized to B or a block copolymer of A block polymerized with B. A and B comprise polymers which are immiscible with one another, and one of A and B is miscible with the polyphenylene ether polymer while the other of A and B is miscible with the styrene-acrylonitrile polymer.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: September 12, 1989
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Stamatios G. Mylonakis, Susan R. Mrozack
  • Patent number: 4833223
    Abstract: A method for producing a high molecular weight polystyrene comprises polymerizing styrene monomer and from about 0.01 to about 2.0 parts by weight per 100 parts by weight total monomer of a polyfunctional monomer in an emulsion polymerization medium. Preferred polyfunctional monomers include allyl groups, vinyl groups or mixtures thereof, and the resultant high molecular polystyrene preferably has a weight average molecular weight, Mw, greater than about 400,000.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: May 23, 1989
    Assignee: Borg-Warner Chemicals, Inc.
    Inventor: Charles L. Myers
  • Patent number: 4826933
    Abstract: Thermoplastic blend compositions comprise a polyphenylene ether resin, a polyamide resin and a compatibilizing agent present in an amount sufficient to effect compatibilization of the polyphenylene ether resin and the polyamide resin. The compatibilizing agent comprises a compound selected from the group consisting of tetracarboxylic acids of aromatic and alicyclic compounds and dianhydride derivatives thereof, and halogen substituted phthalic anyhydrides.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: May 2, 1989
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Thomas S. Grant, Ronald L. Jalbert
  • Patent number: 4824907
    Abstract: Moulded articles of uniform wall thickness are prepared by vacuum-forming or thermoforming a composition comprising a uniform blend of, as base resin, a moulding grade resin having a continuous phase of a first copolymer of a styrenic monomer and an ethylenically unsaturated nitrile and a minor proportion of, as additive resin, a second copolymer of a styrenic monomer and an ethylenically unsaturated nitrile having an ultra high molecular weight, the forming operation being carried out at least 50.degree. C. above the glass transition temperature of the base resin and at a stress level of at most 1 MPa.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: April 25, 1989
    Assignee: Borg-Warner Chemicals, Inc.
    Inventor: Harmen Z. K. Coster
  • Patent number: 4798865
    Abstract: Compositions comprising a carboxylated PPE resin and a polyamide having good compatibility and impact properties. The carboxylated PPE resin/polyamide alloys are produced by a process wherein a mixture consisting essentially of the PPE resin and a minor amount of an unsaturated carboxylic compound are first melt processed, then compounded with the polyamide.
    Type: Grant
    Filed: June 11, 1987
    Date of Patent: January 17, 1989
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Thomas S. Grant, Ronald L. Jalbert, David Whalen
  • Patent number: 4778613
    Abstract: A composition is provided which comprises a carrier medium and a spirodiphosphate described by the general formula: ##STR1## wherein X and X' are independently selected from the group consisting of oxygen and sulfur; and Z and Z' are independently selected from the group consisting of organic moieties attached to phosphorus through one of oxygen, sulfur, nitrogen and carbon.
    Type: Grant
    Filed: December 24, 1985
    Date of Patent: October 18, 1988
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Lee Cherney, Yuval Halpern, Roger K. Nibert
  • Patent number: 4775716
    Abstract: An antistatic thermoplastic composition is provided which comprises about 80% or more by weight of a thermoplastic resin component which includes an ABS graft copolymer; and about 20% or less by weight of an epihalohydrin copolymer of an epihalohydrin and an oxirane-containing comonomer, wherein the ratio by weight of said epihalohydrin to said comonomer is less than 13:7.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: October 4, 1988
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: George Kipouras, Alan R. Federl
  • Patent number: 4764563
    Abstract: PVC impact modifier composition and clear modified PVC comprising PVC and a graft copolymer including from 60 to 70 wt % of a butadiene based rubber grafted with 40 to 30 wt % of a styrenic composition and a ethylenically unsaturated nitrile in a ratio of about 3/1 to 5/1. These compositions have excellent clarity and good impact properties.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: August 16, 1988
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Frank L. Meredith, Lewis E. Ferguson
  • Patent number: 4764552
    Abstract: Compositions comprising grafted nitride rubber, PVC and plasticizer are good thermoplastic elastomers without vulcanization. These compositions exhibit good solvent and abrasion resistance and usually good resistance to compression set.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: August 16, 1988
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: John C. Falk, Leland B. Kliever
  • Patent number: 4760176
    Abstract: A composition, useful as an extreme pressure additive is provided wherein the composition comprises an aminocarboxylic acid-terminated polyoxyalkylene, wherein the polyoxyalkylene has at least seven oxyalkylene units.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: July 26, 1988
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Yuval Halpern, Brian A. Pikelny
  • Patent number: 4758683
    Abstract: A spirodiphosphoamidate-type composition is provided, wherein the composition is represented by the general formula: ##STR1## wherein A and A' are independently selected from the group consisting of oxygen and sulfur; R.sup.1 and R.sup.3 are independently selected from the group consisting of hydrogen, aliphatic, oxyaliphatic, polyoxyaliphatic, cycloaliphatic and aromatic moieties; and R.sup.2 and R.sup.4 are independently selected from the group consisting of C.sub.13 and larger aliphatic, oxyaliphatic, polyoxyaliphatic and aliphatic substituted aryl groups.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: July 19, 1988
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Lee Cherney, Yuval Halpern
  • Patent number: 4755546
    Abstract: Thermal stabilization of olefin polymers, particularly polypropylene. Stabilization is accomplished by means of an ester of a pentaerythritol monoacetal. The ester contains a phenolic group.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: July 5, 1988
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Ingenuin Hechenbleikner, William P. Enlow
  • Patent number: 4740548
    Abstract: A thermoplastic composition is provided which comprises a polyimide with an effective amount of an alpha-hydroxyketone such as benzoin to prevent discoloration on thermal processing.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: April 26, 1988
    Assignee: Borg-Warner Chemicals, Inc.
    Inventor: Yuval Halpern