Patents Examined by David W. Woodward
  • Ink compositions and preparation
    Patent number: 4912157
    Abstract: A composition useful in printing inks exemplified as comprising:(1) from about 4 to about 80% by weight of one or more polyester materials having an acid component of from about 75 to about 84 mole % isophthalic acid and conversely from about 25 to about 16 mole % 5-sodiosulfoisophthalic acid, and having a glycol component of from about 45 to about 60 mole % diethylene glycol and conversely from about 55 to about 40 mole % 1,4-cyclohexanedimethanol or ethylene glycol or mixtures thereof;(2) from about 1.0 to about 60% by weight of pigment material;(3) from about 0.05 to about 30% by weight of a nonionic, polyether type property modifier; and(4) from substantially none to about 90% by weight of water.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: March 27, 1990
    Assignee: Eastman Kodak Company
    Inventors: Gary T. Clark, John N. Rasar, Rebecca R. Stockl
  • Oxygen barrier resins
    Patent number: 4910253
    Abstract: Carbon monoxide-containing ethylene polymers are blended with vinyl alcohol polymers, including vinyl alcohol homopolymers and copolymers, to prepare oxygen barrier resins having good processability.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: March 20, 1990
    Assignee: The Dow Chemical Company
    Inventors: Gerald M. Lancaster, Tu-Anh Pham, James A. Allen
  • Process for the preparation of polyarylene sulphides
    Patent number: 4906712
    Abstract: This invention relates to a process for the preparation of polyarylene sulphides by melt condensation, in which the sulphide bridges of the polymer are formed by the splitting off of a compound which is volatile under the reaction conditions.
    Type: Grant
    Filed: November 8, 1988
    Date of Patent: March 6, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ernst-Ulrich Dorf, Hans-Rudolph Dicke, Wolfgang Russeler, Volker Eckhardt, Joachim Genz
  • Thermoplastic molding compounds which have impact strength when cold
    Patent number: 4904718
    Abstract: Thermoplastic molding compounds which have high cold impact strength. The molding compounds are comprised of (i) a polyamide 1012 with a relative viscosity in the range of 1.5-3.0; and (ii) a plasticizer in the amount 2-25 wt. % based on the weight of the polyamide. The inventive molding compounds enable manufacture of molded pieces.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: February 27, 1990
    Assignee: Huels Aktiengesellschaft
    Inventors: Martin Bartmann, Armin Gude, Michael Droescher, Roland Feinauer
  • Laminates of polyether ketones and carbon fibers
    Patent number: 4904532
    Abstract: A new polymer composition comprises an aromatic polyetherketone or mixture thereof containing the repeating units--O--Ph--O--Ph--CO--Ph-- Iand--O--Ph--Ph--O--Ph--CO--Ph-- II(where Ph is phenylene) in the relative molar proportions I:II of 95:5 to 60:40 and 5-80% w/w of a fibrous reinforcing agent. It is suitable for producing shaped articles of high damage tolerance by hot fabrication followed by slow cooling.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: February 27, 1990
    Assignee: Imperial Chemical Industries PLC
    Inventors: Philip A. Staniland, Roger M. Turner, Frederick N. Cogswell
  • Bituminous composition
    Patent number: 4904713
    Abstract: Bituminous composition comprising a bitumen, an elastomeric, optionally hydrogenated, block copolymer containing at least two alkenyl arene blocks A and at least one conjugated diene block B, and a polymer of a monoalkenyl arene of which polymer the number average molecular weight is the range of 0.25 to 2 times the number average molecular weight of the polymeric blocks A.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: February 27, 1990
    Assignee: Shell Oil Company
    Inventors: Willem C. Vonk, Hendrik J. Brouwer, Anthony L. Bull
  • Fibre reinforced polyphenylene sulphide
    Patent number: 4902730
    Abstract: Improved fiber reinforcement of polyarylene sulphides is achieved by preparing the polyarylene sulphides in the presence of reinforcing fibers pretreated with arylsulphonic acid chlorides at elevated temperatures.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: February 20, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Heinz Reichert, Ingo Koschinski
  • Poly(amide-imide) prepreg and composite processing
    Patent number: 4898754
    Abstract: A method is disclosed for forming poly(amide-imide) prepregs that permits forming void-free composites having residual solvent contents of less than 0.2% by weight. Such composite have improved glass transition temperatures near those of the pure polymer. In a preferred method, a poly(amide-imide) prepreg containing a residual N-methyl-2-pyrrolidone solvent is rapidly heated to about 650.degree. F. to evaporate residual solvent to less than 1.0% by weight. The prepreg is rapidly cooled before the thermoplastic poly(amide-imide) polymer begins to significantly advance in molecular weight. The prepreg may then be layed up to form composite articles that are consolidatable by application of further heat and pressure.
    Type: Grant
    Filed: May 5, 1988
    Date of Patent: February 6, 1990
    Assignee: The Boeing Company
    Inventors: Stephen Christensen, Jay O. Rakel
  • Method to modify poly(aryle sulfide) resins
    Patent number: 4898904
    Abstract: Poly(arylene sulfide) resins are modified by melt mixing a resin with a basic additive to form a resin product composition. The basic additive is selected from the group consisting of inorganic hydroxides, inorganic oxides and organic metal salts wherein the metals are from Group IA, IIA, or IIB and the salts are of carboxylic acids and phenols. The product compositions are suitable for injection molding, film forming and fiber spinning processes.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: February 6, 1990
    Assignee: Phillips Petroleum Company
    Inventors: Michael C. Yu, Lacey E. Scoggins, Jerry O. Reed
  • Blends of poly(arylene sulfide) and copoly(arylene sulfide) modified with diphenyl ether
    Patent number: 4897454
    Abstract: A composition comprising an admixture of(A) from 99.9 to 90 weight percent, based on the weight of the admixture, of a polymer having repeating units corresponding to the structure ##STR1## wherein y is in the range of 0.001 to 0.15, x is in the range of 0.01 to 0.50 and n is at least 100, and(B) from 0.1 to 10 weight percent, based on the weight of the admixture, of a poly(phenylene sulfide) corresponding to the structure ##STR2## where r is at least 25.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: January 30, 1990
    Assignee: Eastman Kodak Company
    Inventors: David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence
  • Process for isolating polyarylene sulphides
    Patent number: 4895930
    Abstract: The invention relates to a process for purifying and isolating polyarylene sulphides. In this process polyarylene sulphides are obtained with a particularly low electrolyte content.
    Type: Grant
    Filed: June 30, 1988
    Date of Patent: January 23, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Franz Alfes, Wolfgang Alewelt, Wolfgang Eisermann, Erhard Tresper
  • Wire coating resin composition
    Patent number: 4895913
    Abstract: A wire coating resin composition comprising 25 to 95% by weight of a polyetherketone and 75 to 5% by weight of an aromatic polysulfone, which is characterized by the intrinsic viscosity (y) of the polyetherketone complying with the condition0.83.ltoreq.y.ltoreq.0.01x+0.65,wherein x represents weight percentage of the polyetherketone in the wire coating resin composition.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: January 23, 1990
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Teruo Saito, Kuniaki Asai, Yasurou Suzuki
  • Polycyanoaryl thioether and preparation thereof
    Patent number: 4894434
    Abstract: A highly heat resistant polymer, polycyanoaryl thioether, of formula: ##STR1## where n is a number of not less than 3 is disclosed. A process for preparing the novel polymer is also disclosed.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: January 16, 1990
    Assignee: Tosoh Corporation
    Inventors: Tetsuya Asahi, Yozo Kondo
  • Biaxially-stretched film made of poly(arylene sulfide) resin composition and production process thereof
    Patent number: 4894419
    Abstract: A biaxially-stretched film is made of a resin composition composed of 100 parts by weight of a substantially linear poly(arylene sulfide) having a melt viscosity of at least 1,000 poises and 0.5-80 parts by weight of a styrene-based resin. The film is produced by diluting a master batch, which has been prepared in advance and is composed of the poly(arylene sulfide) and styrene-based resin, with an additional supply of the poly(arylene sulfide) so as to prepare a resin composition containing the polystyrene-based resin in an amount of 0.5-80 parts by weight per 100 parts by weight of the poly(arylene sulfide), and then biaxially stretching the thus-prepared resin composition.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: January 16, 1990
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Toshiya Mizuno, Yoshikichi Teramoto, Takeshi Saito, Juichi Wakabayashi
  • Coating composition containing metallic pigments exhibiting excellent resistance to environmental attack
    Patent number: 4891394
    Abstract: A coating composition for the protection of metallic and non-metallic substrates against corrosion, comprising a film-forming polymer; at least one particulate metallic pigment in an amount ranging from about 30% to about 60% by weight based on the total weight of the composition; an agent for control of electrical conductive characteristics having an oil absorption value of less than 20 (determined by ASTM standard D 281-84), the volumetric ratio of the control agent to the metallic pigment ranging from 0.7:1 to 1.25:1; an agent for control of rheological characteristics; and at least one solvent compatible with the polymer.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: January 2, 1990
    Inventor: Ronald R. Savin
  • Polyphenylene sulfide resin composition and a process for producing it
    Patent number: 4889893
    Abstract: A polyphenylene sulfide resin composition having excellent impact properties is provided which comprises:(A) a polyphenylene sulfide resin and(B) an olefinic copolymer containing 60 to 99.5% by weight of an .alpha.-olefin and 0.5 to 40% by weight of a glycidyl ester of an .alpha.,.beta.-unsaturated carboxylic acid,and which is characterized in that the polyphenylene sulfide resin (A) is contacted to improve its affinity with the olefinic copolymer (B).
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: December 26, 1989
    Assignee: Toray Industries
    Inventors: Hirokazu Kobayashi, Akihiko Kishimoto
  • Hot-melt adhesive composition
    Patent number: 4886853
    Abstract: The present invention is directed to a hot-melt adhesive containing at least one propylene/1-hexene copolymer. The adhesive contains an amount of a low viscosity, substantially crystalline wax, having a melting point of about 90.degree. C. to about 125.degree. C., sufficient to improve the elastic delamination resistance of the adhesive. The adhesives are particularly useful in disposible diaper construction.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: December 12, 1989
    Assignee: Eastman Kodak Company
    Inventors: Bruce W. Foster, Clyde N. Clubb, Richard K. Stuart, Jr.
  • Novel ammonium salt useful as modifiers for rubber
    Patent number: 4885322
    Abstract: An ammonium slat represented by the formula ##STR1## wherein X represents aliphatic group or alicyclic group, each of which may contain halogen, oxygen, nitrogen or sulfur in the group;n is an integer of 1 or more; and R and R' each independently represent hydrogen or an alkyl having 1 to 12 carbon atoms, and may conjointly form a ring;is useful as a modifier for rubber, particularly to improve dynamic properties of rubber. The process for producing the ammonium salt is also disclosed.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: December 5, 1989
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Isao Kurimoto, Hiroki Yamamoto, Tetsuo Yamaguchi
  • Polyphenylene sulfide resin composition useful for plating
    Patent number: 4883702
    Abstract: A polyphenylene sulfide composition useful for plating is disclosed, comprising a polyphenylene sulfide resin, glass fibers, and potassium titanate fibers. Molded articles of this composition, when plated after etching, provide a plated article which is excellent in appearance and peel strength. Thus these plated articles can be used in outer applications, such as electric parts and automobile parts.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: November 28, 1989
    Assignees: Tosoh Corporation, Hodogaya Chemical Co., Ltd.
    Inventors: Masatoshi Sato, Kensuke Ogawara, Noriaki Emura
  • Aromatic composition and method for the production of the same
    Patent number: 4880851
    Abstract: An aromatic composition comprises aromatic substances that are encapsulated and/or clathrated in a matrix of polymer. The includes an inorganic polymer produced from metal alkoxides; a conjugated polymer produced from metal alkoxides and silane coupling agents; and a conjugated polymer produced from metal alkoxides, silane coupling agents, and organic monomers. The aromatic composition has slow-release characteristics, so that the aromatic substances are released over a long period of time. In a method for the production of the aromatic composition, a catalyst for sol-gel methods that comprises an acid or its anhydride and an organic base, and if necessary, irradiation with ultraviolet light and/or an electron beam are used for making the polymer.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: November 14, 1989
    Inventor: Tohru Yamamoto