Patents Examined by Helen F. Lee
  • Patent number: 5840793
    Abstract: Disclosed are thermoplastic resin compositions having improved heat resistance, e.g., IR soldering and HDT; increased ductility and flowability; and reduced flash. In particular, the thermoplastic resin compositions have at least one high heat amorphous resin, at least one polysulfide; and, optionally, at least one reinforcing filler and/or at least one polyolefin and/or at least one polyolefin compound and/or at least one polyepoxy compound. The high heat amorphous resin is preferably a polyetherimide and the polyolefin is preferably a high crystalline polyethylene. The compositions of the invention are particularly well suited for preparing no flash high heat electrical connectors.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: November 24, 1998
    Assignee: General Electric Company
    Inventors: Raymond H. Glaser, Darryl Nazareth, Jerry Jan-nan Yang
  • Patent number: 5625002
    Abstract: Disclosed are a polyphenylene sulfide composition having excellent impact characteristics, melt flow characteristics and flexibility which comprises, as indispensable components, (A) a polyphenylene sulfide, (B) an epoxy group-containing olefinic polymer, and (C) at least one elastomer selected from ethylene/propylene copolymers, ethylene/butene copolymers, ethylene/propylene/diene copolymers, hydrogenated styrene/butadiene/styrene block copolymers, copolymers of ethylene with a monomer selected from acrylic acid, methacrylic acid and alkyl esters and metal salts thereof, and polyamide elastomers; and a shaped article made from the polyphenylene sulfide composition.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: April 29, 1997
    Assignee: Toray Industries, Inc.
    Inventors: Sho Kadoi, Norio Shimasaki, Kazuhiko Kobayashi, Katuya Ohno
  • Patent number: 5618870
    Abstract: It is herein disclosed a polymer blend having and exhibiting excellent tribological properties comprising a major amount of polyketone polymers and a minor amount of one or more silicone oil. The blend also has and exhibits improved lubricity and has a low DCOF of from about 0.3-0.4. The blend is particularly useful in the manufacture of articles used in applications where surfaces are in contact during motion.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: April 8, 1997
    Assignee: Shell Oil Company
    Inventors: John E. Flood, John W. Kelley, Davis R. Roane, John M. Clasby
  • Patent number: 5610223
    Abstract: The impact strength of a thermoplastic molding composition containing polyamide resin is improved upon the incorporation therewith of a particular silicone rubber powder. The silicone rubber powder, added at a level of about 1 to 25 percent contains a mixture of (a) a polydiorganosiloxane and (b) finely divided silica filler.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: March 11, 1997
    Assignee: Bayer Corporation
    Inventor: James P. Mason
  • Patent number: 5610261
    Abstract: High compressive strength, three-dimensional para-oriented benzobisoxazole polymers of the formula: ##STR1## wherein Q is ##STR2## and wherein Z represents repeating units of the formula: ##STR3##
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: March 11, 1997
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: My Dotrong, Minhhoa Dotrong, Robert C. Evers
  • Patent number: 5587435
    Abstract: A block copolymer resin containing structural units conforming to ##STR1## and a method for its preparation are disclosed. Accordingly, the block copolymer is prepared by reactive blending of an ester-containing polyether sulfone with a polyester. The block copolymer resin thus produced is characterized by its homogeneous morphology. The high level of its mechanical properties makes the resin suitable for a variety of applications.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: December 24, 1996
    Assignees: Bayer Corporation, Bayer Aktiengesellschaft
    Inventors: Aaron D. Meltzer, Alexander Karbach
  • Patent number: 5556925
    Abstract: Disclosed is a polyurethane resin which is a reaction product of a high molecular weight polyol compound having a molecular weight of 3,000 to 10,000, a low molecular weight polyol compound having a molecular weight of not more than 200, an organic diisocyanate compound, a chain extender, and optionally a reaction terminating agent, wherein the whole of the high molecular weight polyol compound and the low molecular weight polyol compound has an average molecular weight of 1,500 to 2,700; the isocyanate index (I.I.) of the organic diisocyanate compound to the high molecular weight polyol compound satisfies the following condition: I.I.>2.0; and the nitrogen content of the polyurethane resin derived from the isocyanate group of the organic diisocyanate compound is from 1.30 to 1.95% by weight.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: September 17, 1996
    Assignee: Sakata Inx Corporation
    Inventors: Katsumi Kousaka, Takahiko Inoue, Takahito Miyamoto
  • Patent number: 5554723
    Abstract: A process for the production of a poly(arylene thioether) containing phthalic anhydride groups wherein a dihalogen-substituted aromatic compound is reacted with an alkali metal sulfide in a polar organic solvent containing water to produce the poly(arylene thioether) is disclosed. This process comprises causing a monohalogen-substituted phthalic compound to exist in a polymerization reaction system, and controlling a ratio, a/b of the number of moles, a of the charged dihalogen-substituted aromatic compound to the number of moles, b of the charged alkali metal sulfide within a range of 0.8<a/b<1.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: September 10, 1996
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Naomitsu Nishihata, Shunzo Endo, Yukio Ichikawa, Takayuki Katto
  • Patent number: 5545686
    Abstract: This invention discloses a rubber composition having a high modulus and excellent processability which is comprised of a blend of (1) at least one elastomer selected from the group consisting of polybutadiene rubber, styrene-butadiene rubber, synthetic polyisoprene rubber, natural rubber, isoprene-butadiene rubber, isoprene-butadiene-styrene rubber, nitrile rubber, carboxylated nitrile rubber, and EPDM rubber, (2) at least one thermotropic liquid crystalline polymer containing an aliphatic spacer, wherein the thermotropic liquid crystalline polymer exhibits no apparent crystalline to nematic transition, wherein the thermotropic liquid crystalline polymer exhibits nematic order above its glass transition temperature, and wherein the glass transition temperature of the thermotropic liquid crystalline polymer is within the range of 20.degree. C. to 180.degree. C., and (3) carbon black.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: August 13, 1996
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: John D. Carter, Richard R. Smith
  • Patent number: 5545714
    Abstract: A process for preparing an organic disulfide polymer such as polyethylene disulfide which is used in batteries comprises contacting a dimercaptan such as 1,2-ethanedithiol with elemental sulfur using a mixture of a basic compound such as NaOH and an ethoxylated alcohol such as Union Carbide's TERGITOL.RTM. 15-S-7 having the formula of R.sup.2 O(CH.sub.2 CH.sub.2 O).sub.7 H as catalyst wherein the dimercaptan is present in excess amount to effect the preparation of the disulfide polymer.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: August 13, 1996
    Assignee: Phillips Petroleum Company
    Inventors: James E. Shaw, William E. Sattich, Howard F. Efner
  • Patent number: 5541243
    Abstract: A thermoplastic resin composition comprising (a) a polyphenylene sulfide resin, (b) a polyphenylene ether resin, (c) a specific organophosphorus compound, and (d) a basic compound is disclosed. The composition exhibits improved compatibility between resinous components (a) and (b) and therefore provides a molded article having high mechanical strength and excellent appearance.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: July 30, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Haruo Ohmura, Tomohiko Tanaka
  • Patent number: 5540984
    Abstract: A method of durably rendering a polymeric fabric, e.g., a polyolefin fabric, wettable and resistant to protein adsorption. The method involves providing a polymeric fabric having a surface, applying to the surface of the polymeric fabric a composition which includes water and a surfactant adapted to durably render the polymeric fabric resistant to protein adsorption, and drying the polymeric fabric. The surfactant has a solubility in water at 20.degree. C. no greater than about 5 percent by weight, based on the weight of the water, and is present on the polymeric fabric in an amount of the surfactant sufficient to reduce the adsorption of the protein by the fabric. The coated fabric not only exhibits durable reduced adsorption of protein but also has durable wettability by aqueous liquids.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: July 30, 1996
    Assignee: Kimberly-Clark Corporation
    Inventors: Roger B. Quincy, III, Ronald S. Nohr, John G. MacDonald, Elizabeth D. Gadsby, Dennis S. Everhart
  • Patent number: 5525415
    Abstract: A method of durably rendering a polymeric fabric, e.g., a polyolefin fabric, wettable and resistant to protein adsorption. The method involves providing a polymeric fabric having a surface, applying to the surface of the polymeric fabric a composition which includes water and a surfactant adapted to durably render the polymeric fabric resistant to protein adsorption, and drying the polymeric fabric. The surfactant has a solubility in water at 20.degree. C. no greater than about 5 percent by weight, based on the weight of the water, and is present on the polymeric fabric in an amount of the surfactant sufficient to reduce the adsorption of the protein by the fabric. The coated fabric not only exhibits durable reduced adsorption of protein but also has durable wettability by aqueous liquids.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: June 11, 1996
    Assignee: Kimberly Clark Corporation
    Inventors: Roger B. Quincy, III, Ronald S. Nohr, John G. MacDonald, Elizabeth D. Gadsby, Dennis S. Everhart
  • Patent number: 5520980
    Abstract: There is provided a protective barrier apparel fabric comprised of an at least three layer laminate. The first layer being of elastomeric meltblown thermoplastic polymer web, the second layer of a liquid impermeable film and the third layer of liquid permeable material, where the layers are bonded together. The elastomeric meltblown layer may be stitchbonded prior to incorporation into the laminate and/or may be saturated with a latex composition prior to incorporation into the laminate. The laminate provides good MVTR and protection against blood strikethrough.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: May 28, 1996
    Assignee: Kimberly-Clark Corporation
    Inventors: Linda J. Morgan, Robert D. Harris, Jr.
  • Patent number: 5502102
    Abstract: A thermoplastic resin composition is provided which contains polyetherimide resin, poly(arylene sulfide) resin, an epoxy compound and, optionally, glass fibers. The composition exhibits enhanced physical properties, specifically enhanced ductility and flash resistance. The composition is useful for making molded articles exhibiting desired physical properties.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: March 26, 1996
    Assignee: General Electric Company
    Inventor: Darryl Nazareth
  • Patent number: 5500254
    Abstract: A method of durably rendering a polymeric fabric, e.g., a polyolefin fabric, wettable and resistant to protein adsorption. The method involves providing a polymeric fabric having a surface, applying to the surface of the polymeric fabric a composition which includes water and a surfactant adapted to durably render the polymeric fabric resistant to protein adsorption, and drying the polymeric fabric. The surfactant has a solubility in water at 20.degree. C. no greater than about 5 percent by weight, based on the weight of the water, and is present on the polymeric fabric in an amount of the surfactant sufficient to reduce the adsorption of the protein by the fabric. The coated fabric not only exhibits durable reduced adsorption of protein but also has durable wettability by aqueous liquids.
    Type: Grant
    Filed: December 21, 1993
    Date of Patent: March 19, 1996
    Assignee: Kimberly-Clark Corporation
    Inventors: Roger B. Quincy, III, Ronald S. Nohr, John G. MacDonald, Elizaeth D. Gadsby, Dennis S. Everhart
  • Patent number: 5500479
    Abstract: A block copolymer resin containing structural units conforming to ##STR1## and a method for its preparation are disclosed. Accordingly, the block copolymer is prepared by reactive blending of an ester-containing polyether sulfone with a polyester. The block copolymer resin thus produced is characterized by its homogeneous morphology. The high level of its mechanical properties makes the resin suitable for a variety of applications.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: March 19, 1996
    Assignees: Bayer Corporation, Bayer Aktiengesellschaft
    Inventors: Aaron D. Meltzer, Alexander Karbach
  • Patent number: 5488084
    Abstract: Disclosed is a polyphenylene sulfide resin composition having a superior heat resistance and impact resistance obtained by melt-kneading a modified polyphenylene sulfide resin obtained by reacting a polyphenylene sulfide resin with a carboxylic acid anhydride, with at least one thermoplastic resin selected from a polyamide resin, a polyester resin, a polycarbonate resin, a polysulfone resin, and a polyamide-imide resin.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: January 30, 1996
    Assignee: Toray Industries, Inc.
    Inventors: Sho Kadoi, Hidemi Yabe, Kazuhiko Kobayashi
  • Patent number: 5484851
    Abstract: A mixed block copolymer of the A-B type is prepared. The A block of the block copolymer is formed by the polymerization of compounds having vinyl groups and the B block of which is a polyoxyalkylene block, obtainable by polymerizing, first of all, monomers having vinyl groups at temperatures of 60.degree. to 150.degree. C. by a free radical mechanism in the presence of sufficient amounts of an initiator and an amount, which corresponds to the desired chain length, of a chain-length regulator, which carries, aside from a mercapto group, a further functional group having at least one active hydrogen and adding alkylene oxide, optionally in the presence of a known addition reaction catalyst, in an addition reaction at 20.degree. to 180.degree. C. onto the polymer so modified, until the desired molecular weight of block B is reached.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: January 16, 1996
    Assignee: Th. Goldschmidt AG
    Inventor: Jurgen Fock
  • Patent number: 5484872
    Abstract: The present invention provides a cyclic sulfide compound represented by a general formula (I) ##STR1## (where R.sup.1 represents --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --CH.sub.2 --CH.sub.2 --, --CH.sub.2 --O--CH.sub.2 --, --CH.sub.2 --O--, or --CH.sub.2 --S--). According to this invention, a novel cyclic sulfide compound which gives high refractive index and high Abbe number can be obtained. The polymerizable compositions for manufacturing optical products with this compound as their main component can be readily molded into plastic lenses which give superhigh refractive indices and high Abbe numbers or those which give high refractive indices and high Abbe number with low sp.grs. in addition thereto. The castings obtained from said polymerizable compositions are useful as plastic lenses for glasses, manifesting optical uniformity and being excellent in processability, transparency, and thermal, impact and light resistance.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: January 16, 1996
    Assignee: Daiso Co., Ltd.
    Inventors: Hiroyuki Kanesaki, Tetsuyuki Saika, Masafumi Mikami