Patents Examined by Thomas Hamilton, III
  • Patent number: 5582916
    Abstract: A polyvinyl alcohol film containing at least one of complexes of hydroxybenzophenone compounds having specific structure, and at least one basic compound selected from the group consisting of (i) a hydroxide, carbonate or bicarbonate of an alkali metal, (ii) carbonate or bicarbonate of ammonium, and (iii) an amine compound. The above film is excellent in the effect of blocking ultraviolet radiation in the wavelength range from 360 to 400 nm, and therefore can be used in the optical fields of polarizing sunglasses, the display fields of a liquid crystal display and fields of wrapping materials for clothes or foods as it is or as a laminate of it with other transparent film.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: December 10, 1996
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Kazuhiro Ohtsu, Osamu Aoki, Masaki Nagata, Junko Baba
  • Patent number: 5583179
    Abstract: Compatible blends of poly(phenylene ether) resins and polyester resins are provided comprising electrophile-containing poly(phenylene ether) resins, polyester resins and an impact modifier mixture comprising a functionalized polyolefin-based resin and an elastomeric block copolymer to afford articles having good impact, ductility and tensile properties. The compositions may further comprise reinforcing agents, flame retardants, and flow promoters. Articles made from the compositions are useful for automotive components.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 10, 1996
    Assignee: General Electric Company
    Inventors: Chorng-Fure R. Hwang, James J. Scobbo, Jr., John B. Yates
  • Patent number: 5578661
    Abstract: A gel forming system comprising an aqueous mixture of a first component of at least one water-soluble polymer in an amount sufficient to increase the initial viscosity of the mixture and impart adhesivity properties thereto; a second component of a acid-containing polymer; a third component of an amino-containing polymer; and water. This system has a pH in the range of between about 5.5 and 8.5 and the second and third components are each present in sufficient amounts which, in combination, increase the cohesiveness of the mixture over time, such that the mixture can be initially combined in a relatively fluid state and subsequently forms a cohesive gel structure.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: November 26, 1996
    Assignee: Nepera, Inc.
    Inventors: Adrian S. Fox, Amy E. Allen
  • Patent number: 5578648
    Abstract: A carpet having pile threads forming a pile layer, a support layer which consists of fiber or ribbon material of polyolefins or polyester, and a back coating, the pile threads being attached to the support layer possibly by the back coating, and of a plastic of comparatively high resistance to temperature, in particular polyamide 6 or 6.6, and the back coating is attached as lamination to the top material. In order to obtain a strong attachment of the layers to each other, if possible without limiting the recyclability of the carpet, the back coating be effected by means of a lamination adhesive which contains unmelted fibers, in particular polyamide fibers.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: November 26, 1996
    Assignee: Vorwerk & Co. Interholding GmbH
    Inventors: Friedrich Beyer, Klaus H olzel, Achim Werner
  • Patent number: 5576387
    Abstract: Thermoplastic compositions having improved melt strength comprise a polyphenylene ether polymer and a polyamide. The polyamide is formed from a diamine, a second amine selected from secondary triamines and polyamines, and a dicarbioxylic acid. The second amine is included in an amount sufficient to improve the melt strength of the composition. The compositions are particularly suitable for use in blow molding processes.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: November 19, 1996
    Assignee: General Electric Company
    Inventor: Gregory R. Chambers
  • Patent number: 5574104
    Abstract: The present invention relates to electrostatic dissipative polymeric compositions comprising a polyether polyurethane which can be blended with one or more base polymers. In some applications, the polyurethane is useful without further blending. Further, the polyurethane blends can be blended with glass beads or glass fibers which have a synergist effect when combined with the electrostatic dissipative agent.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: November 12, 1996
    Assignee: The B. F. Goodrich Company
    Inventors: Edmond G. Kolycheck, Elaine A. Mertzel, Francis R. Sullivan, Gary F. Wilson, Timothy E. Fahey
  • Patent number: 5574114
    Abstract: A blend of isocyanate-terminated polyurethane prepolymers is provided. The blend consists essentially of a first crystalline prepolymer based upon polyhexamethylene adipate and a second prepolymer based upon polytetramethylene ether glycol.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: November 12, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles W. Stobbie, IV, John C. Tangen, Lani S. Kangas
  • Patent number: 5571875
    Abstract: A molding resin composition comprising 99.9 to 50% by weight of polyimide represented by the formula: ##STR1## and 0.1 to 50% by weight of polyether ketone resin and/or polyester resin, and more particularly comprising the polyester resin capable of forming an anisotropical molten phase at a temperature of 420.degree. C. or less, and a polyimide-based molding resin composition which comprises the said resins and other additives such as phenolic resin, fluororesin, graphite, carbon fibers, aromatic polyamide fibers, potassium titanate fibers and a crystallization accelerator, and is excellent in thermal resistance, chemical resistance, mechanical strength and processability.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 5, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Toshihiko Tsutsumi, Toshiyuki Nakakura, Shuichi Morikawa, Toshiaki Takahashi, Atsushi Morita, Yoshihisa Gotoh
  • Patent number: 5563233
    Abstract: An improved polyurethane is prepared by reacting a diol component and an organic diisocyanate with critical selection of the amount of water in the reaction mixture and the diol component. The diol component is a long chain polyoxyethylene glycol optionally mixed with a low molecular weight polyoxyethylene glycol. A tough gel can be formed by mixing the polyurethane in a diol or triol and water solution. The tough gel can be used in burn and wound dressings, electroconductive pads, high slip materials and surgical implants. An optically clear gel can also be formed. Solutions and emulsions can be formed of the polymer and can be combined with fillers to form face creams and antiperspirants. A film can cover one side of the gel for burn and wound applications. The gel can be used in squeeze tubes and in spray cans in burn wound care dressings and industrial applications and in bags and containers for use in plastic surgery implants.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: October 8, 1996
    Assignee: Tyndale Plains-Hunter, Ltd.
    Inventors: Murray H. Reich, Ken Nelson, Jirina Kuzma
  • Patent number: 5559196
    Abstract: A blend of isocyanate-terminated polyurethane prepolymers is provided. The blend consists essentially of a first crystalline prepolymer based upon polyhexamethylene adipate and a second prepolymer based upon polytetramethylene ether glycol.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: September 24, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles W. Stobbie, IV, John C. Tangen, Lani S. Kangas
  • Patent number: 5559269
    Abstract: The invention relates to 3,3-diphenylpropylamines of formula (I), wherein R.sup.1 signifies hydrogen or methyl, R.sup.2 and R.sup.3 independently signify hydrogen, methyl, methoxy, hydroxy, carbamoyl, sulphamoyl or halogen, and X represents a tertiary amino group of formula (II), wherein R.sup.4 and R.sup.5 signify non-aromatic hydrocarbyl groups, which may be the same or different and which together contain at least three carbon atoms, and wherein R.sup.4 and R.sup.5 may form a ring together with the amine nitrogen, their salts with physiologically acceptable acids and, when the compounds can be in the form of optical isomers, the racemic mixture and the individual enantiomers.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: September 24, 1996
    Assignee: Pharmacia AB
    Inventors: Rolf A. Johansson, Pinchas Moses, Lisbeth Nilvebrant, Bengt .ANG.. Sparf
  • Patent number: 5559184
    Abstract: A thermoplastic resin composition containing (A) 1 to 99% by weight of a modified polyphenylene ether comprising repeating units of the formula (1): ##STR1## in which R.sub.1 and R.sub.2 are, independently from each other, a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms and having a number average polymerization degree of 20 to 1200, in which 0.02/X to 1/X of methyl groups at the 2- and/or 6-positions of phenylene group are substituted by an aminomethyl group wherein X is a number average polymerization degree, and (B) 99 to 1% by weight of a polyolefin which is modified with a compound having a functional group reactive with an amino group in a molecule, which composition is excellent in heat resistance, melt flowability, processability and impact resistance, and provides an article having good appearance and gloss.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: September 24, 1996
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Motonobu Furuta, Takanari Yamaguchi
  • Patent number: 5558941
    Abstract: A blend of isocyanate-terminated polyurethane prepolymers is provided. The blend consists essentially of a first crystalline prepolymer based upon polyhexamethylene adipate and a second prepolymer based upon polytetramethylene ether glycol.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: September 24, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles W. Stobbie, IV, John C. Tangen, Lani S. Kangas
  • Patent number: 5559186
    Abstract: A thermoplastic resin composition having excellent appearance and moldability contains:(A) 1 to 99% by weight of a polyphenylene ether resin,(B) 99 to 1% by weight of a polystyrene resin prepared by copolymerization of: (i) a styrene compound, 100 to 500 ppm by weight of a compound containing 2-6 vinyl groups, and if necessary, a compound capable of copolymerizing with the styrene compound, or (ii) a polystyrene resin obtained by copolymerization of a styrene compound, 100 to 500 ppm by weight of a compound containing 2-6 vinyl groups, a first rubber, and if necessary, a compound capable of copolymerizing with said styrene compound, or a mixture of (i) and (ii). Component (C) is a second rubber which can be present in amounts of about 0 to 100 parts by weight relative to (A) and (B).
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: September 24, 1996
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takeshi Fujii, Yasuro Suzuki, Hayato Kihara, Takashi Anbo
  • Patent number: 5554693
    Abstract: Thermoplastic compositions are provided containing polyphenylene ether resin, polyamide resin and terpene phenol having a hydroxyl value of 45 or above. The compositions have outstanding coating film adhesion.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: September 10, 1996
    Assignee: General Electric Company
    Inventors: Takashi Ohtomo, Koji Myojo, Hiroshi Kubo
  • Patent number: 5554438
    Abstract: A self-release binder system comprising (a) an organic polyisocyanate binder; and (b) a composition comprising (i) a wax and (ii) a fatty acid.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: September 10, 1996
    Assignee: Imperial Chemical Industries, PLC
    Inventors: Joseph J. Marcinko, John R. Robertson
  • Patent number: 5548022
    Abstract: An aqueous dispersion type stain-proofing agent comprising an aqueous medium and fine particles containing a reaction product (A) and an addition polymer (B), wherein the reaction product (A) is a reaction product of a compound (a.sup.1) having a polyfluoroalkyl group and a group containing active hydrogen reactive with an isocyanate group, with a polyfunctional isocyanate compound (a.sup.2).
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: August 20, 1996
    Assignee: Asahi Glass Company Ltd.
    Inventors: Katsuji Ito, Satoshi Kamata
  • Patent number: 5548057
    Abstract: A one-component-type composition for a polyurethane elastomer, comprising as a main component a polyurethane precursor containing a polyisocyanate component, and a compound having active hydrogen groups. The polyisocyanate component contains a polyisocyanate having at least a urethodione group (particularly urethodione and isocyanurate groups), and the compound (polyol or the like) having active hydrogen groups contains at least two active hydrogen groups in its molecule and has a molecular weight of 18 to 20000. The polyurethane precursor is obtained by reacting the polyisocyanate component and the compound having active hydrogen groups under the condition that the equivalent ratio of the active hydrogen group in the compound having active hydrogen groups to the isocyanate group in the polyisocyanate component exceeds 1.0. The equivalent ratio of the urethodione group to the active hydrogen group in the polyurethane precursor is from 0.25 to 1.0.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: August 20, 1996
    Assignees: Inoac Corporation, Nippon Polyurethane Industry Co., Ltd.
    Inventors: Shinji Hirayama, Shin Konishi, Takao Hidai, Shinjiro Hama, Sadako Hashimoto, Yukihiro Morikawa
  • Patent number: 5543473
    Abstract: The present invention is to provide an electrophotographic photosensitive member in which drum flange and a drum gear is strongly bonded to the support and which is inexpensive and free from bonding failure even when a high rotational torque is applied, the drum flange or the drum gear containing a thermoplastic polyurethane resin and a polyacetal resin. The present invention further provides an electrophotographic apparatus, a device unit and a facsimile machine employing the above electrophotographic photosensitive member.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: August 6, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoki Fuei, Takashi Tanaka
  • Patent number: 5541279
    Abstract: The invention relates to a process for the preparation of totally or partially blocked polyisocyanates based on a blocking agent and on a polyisocyanate containing at least two free NCO groups, if desired in the presence of a chain extender, in which the totally or partially blocked polyisocyanates are prepared by a solvent-free and continuous procedure. This reaction is carried out in a static mixer or intensive kneading apparatus or extruder. The invention furthermore relates to the use of the totally or partially blocked polyisocyanates for PUR powder coatings and solvent-containing, one-component PUR stoving enamels.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: July 30, 1996
    Assignee: Huels Aktiengesellschaft
    Inventors: Rainer Gras, Siegfried Brandt