Patents Examined by Thomas J. Herbert
  • Patent number: 4898772
    Abstract: A preparation for the abhesive coating of baking tins, baking molds, frying pans, metal pots and the like is disclosed. The preparation which comprises predominantly a heat-curable, polyol-modified polysiloxane A and 0.05 to 4% by weight, based on polysiloxane A, of a linear siloxane B that is capable of reacting with polysiloxane A. The modified polysiloxane A is obtained by reaction of a polysiloxane A1 of the general formula. ##STR1## wherein OR.sup.1 is an alkoxy group, derived from a primary or scondary alcohol with 1 to 4 carbon atoms,R.sup.2 is alkyl and/or phenyl,a=1 to 1.5,b=0.1 to 0.08,with a multihydric alcohol A2, with the characteristic feature that, as multihydric alcohol A2, is used an ester group-containing polyo of the general formula ##STR2## which can be obtained by the esterification of 1 mole of dicarboxylic acid HOOC--R.sup.7 --COOH with 2 moles of alcohol of formula R.sup.6 OH, the R.sup.6 groups in the molecule being the same or different and representing the groups ##STR3## wherein R.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: February 6, 1990
    Assignee: Th. Goldschmidt AG
    Inventors: Manfred Priesch, Harald Rau, Christian Weitemeyer
  • Patent number: 4898775
    Abstract: Paint coated metal sheets are provided by applying a paint film on a metal sheet wherein the paint film has a surface layer having a thickness of one-5000 angstroms. The paint film contains fluorine atoms and/or perfluoralkyl groups such as methyl fluoride, ethyl fluoride, the fluorine atoms and/or perfluoralkyl groups being introduced in the paint film by a plasma treatment.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: February 6, 1990
    Assignee: Nippon Steel Corporation
    Inventors: Joji Oka, Ryoji Nishioka
  • Patent number: 4897313
    Abstract: A waterproofing system including a water-based latex primer composition and a waterproofing adhesive membrane. The primer exhibits excellent adhesion to concrete and an excellent surface for adhesion by the waterproofing membrane. The primer is a latex emulsion including butyl acrylate, styrene and acrylonitrile.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: January 30, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventor: Robert A. Wiercinski
  • Patent number: 4895752
    Abstract: Laminate is disclosed comprising a perfluoropolymer reinforced with polyaramid positioned between two layers of copper.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: January 23, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Craig S. McEwen
  • Patent number: 4894282
    Abstract: Safety or impact resistant laminates are disclosed containing a plurality of laminae and at least on composite interlayer said composite interposed between and bonding any two of the laminae and containing one or more thermoplastic sheets from about 1 to about 30 mils in combined thickness bonded one to another and on each external face by a contact or pressure sensitive adhesive layer.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: January 16, 1990
    Assignee: General Electric Company
    Inventors: Donald G. LeGrand, William V. Olszewski
  • Patent number: 4891268
    Abstract: A coated metal substrate protected against corrosion with a lubricious coating which, exclusive of lubricant, is resin-free and phosphate-free, which coating contains hexavalent-chromium, particulate metal and a lubricant.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: January 2, 1990
    Assignee: Metal Coatings International Inc.
    Inventors: Michel Fourez, Michel Lonca, Patrick Pichant
  • Patent number: 4889718
    Abstract: Hydrophylic polyacids, such as macromolecules of polyitaconic acid and polyacrylic acid, where such macromolecules have molecular weights >50,000 as primers between a polymeric top coating, such as polyurethane, and an oxidized aluminum or aluminum alloy. A near monolayer of primer is used in polymeric adhesive/oxidized aluminum adhered joint systems in 0.05% primer concentration to give superior results in standard peel tests.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: December 26, 1989
    Assignee: Associated Universities, Inc.
    Inventor: Toshifumi Sugama
  • Patent number: 4888245
    Abstract: A multilayer coating system for protecting metal surfaces comprising a multilayer coating of fluoroplastics in which at least one intermediate layer contains a porous filler, in particular activated carbon.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: December 19, 1989
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Richard Witzko
  • Patent number: 4888237
    Abstract: A process for manufacturing a metallized polymeric film to provide a structure possessing high metal-to-film adhesion and little, if any, tendency toward metal fracture is disclosed. In one embodiment of the process, at least one polyolefin layer is provided to a film which includes a substantially isotactic polymer having a degree of atacticity of no more than about 6%. The isotactic component is preferably polypropylene homopolymer. Other components include up to about 34% of an adhesive-promoting component which can be a C.sub.2 -C.sub.4 polymer, including homo-, co-, and terpolymers having C.sub.2 -C.sub.4 carbon chains, and a second isotactic polymer having a degree of atacticity of from about 6% to about 15%. The surface of the polyolefin layer is subjected to flame treatment followed by vacuum metallization of this surface (preferably with aluminum).
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: December 19, 1989
    Assignee: Mobil Oil Corporation
    Inventors: Ricardo Balloni, Jay K. Keung, Eldridge M. Mount, III
  • Patent number: 4888249
    Abstract: A method for bonding homopolymers or copolymers of vinylidene chloride to polyamides which method comprises blending the polymer or copolymer with low density polyethylene, high density polyethylene, linear low density polyethylene, homopolymer or copolymer of propylene, or a copolymer of ethylene and acrylic acid, methacrylic acid and a small amount of copolymer of ethylene and a lower alkyl or hydroxyalkyl ester of acrylic or methacrylic acid and then contacting the blend of polymers with the polyamide under heat and pressure. Unexpected adhesion between the Saran blend and the polyamide was found.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: December 19, 1989
    Assignee: The Dow Chemical Company
    Inventors: David P. Flores, Philip E. Alei
  • Patent number: 4885210
    Abstract: Composite sheet for the impervious coating of construction components which are covered with a water-repellent hydrocarbon material (for example, bitumen or expanded polystyrene), comprising at least two superposed layers based on flexible polyvinyl chloride, in which the surface of the layer intended to be placed on the hydrocarbon material is subjected to a cold plasma treatment.
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: December 5, 1989
    Assignee: Solvay & Cie. (Societe Anonyme)
    Inventor: Walter D. Vedove
  • Patent number: 4883718
    Abstract: This invention relates to flexible copper-clad circuit substrates where copper foil is directly and firmly jointed with a polyimide film.Polyimide used is obtained conventionally by reacting diamine components including 3,3'-diaminobenzophenone, 1,3-bis(3-aminophenoxy)-bezene, 4,4'-bis(3-aminophenoxy)biphenyl, 2,2-bis[4-(3-aminophenoxy)-phenyl]propane, 2,2-bis[4-(3-aminophenoxy)phenyl]-1,1,1,3,3,3-hexafluoropropane, bis[4(3-aminophenoxy)phenyl] sulfide, bis[4-(3-aminophenoxy)phenyl] ketone and bis[4-(3-aminophenoxy)phenyl] sulfone, with tetracarboxylic acid dianhydride including pyromellitic dianhydride, 3,3',4,4'-benzophenone tetracarboxylic dianhydride, 3,3',4,4'-biphenyl tetracarboxylic dianhydride and bis(3,4-dicarboxyphenyl) ether dianhydride, in organic solvent, and by thermally or chemically imidizing resultant polyamic acid.Polyimide thus obtained has relatively lower melt viscosity and is flowable at high temperatures.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: November 28, 1989
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masahiro Ohta, Saburo Kawashima, Yoshiho Snobe, Shoji Tamai, Hideaki Oikawa, Akihiro Yamaguchi
  • Patent number: 4883706
    Abstract: Thick, composite polyester films, well adapted as base films, e.g., for the graphic arts, are comprised of a crystalline or semicrystalline polyester film substrate (A) having a thickness of at least 40 micrometers, said film substrate (A) having a coating, e.g., a coextrudate, of a sulfonated copolyester adhesion primer on at least one of the face surfaces thereof, and said sulfonated copolyester comprising at least 80 mol % of terephthalate recurring units and from 3 to 10 mol % of oxysulfonylate recurring units.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: November 28, 1989
    Assignee: Rhone-Poulenc Films
    Inventor: Pierre Grosjean
  • Patent number: 4883708
    Abstract: A metal foil covered laminate comprising a sheet-like base formed of at least two of meta-aramid fiber, polyethylene terephthalate fiber and glass fiber and impregnated with epoxy resin including acrylonitrile/butadiene copolymer having terminal carboxyl groups and a metal foil covering on the sheet-like base.
    Type: Grant
    Filed: June 2, 1988
    Date of Patent: November 28, 1989
    Assignee: Shin-Kobe Electric Machinery Co., Ltd.
    Inventors: Kenichi Kariya, Masayuki Noda, Takahiro Yamaguchi, Katsuji Takahashi
  • Patent number: 4880683
    Abstract: Hot-tackifying adhesive tape, the adhesive layer of which is an acrylic polymer which is nontacky or poorly tacky at ordinary room temperature, but at any temperature over a wide range of elevated temperatures, it becomes tacky and adheres upon contact to clean substrates without the application of significant pressure. Good bonds are immediately formed at a tackifying temperature without the necessity of crosslinking or other chemical reactions.
    Type: Grant
    Filed: May 11, 1988
    Date of Patent: November 14, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert H. Stow
  • Patent number: 4880700
    Abstract: Oriented polyester film composites comprise, on at least one face surface of the polyester base, a primer coating adapted to enhance the adhesion of topcoats thereto, said adhesive primer coating comprising a modified copolymer produced by aqueous phase radical polymerization of at least one acrylic monomer in the presence of a water-soluble or water-dispersible copolyester containing a plurality of sulfonyloxy groups.
    Type: Grant
    Filed: August 12, 1987
    Date of Patent: November 14, 1989
    Assignee: Rhone-Poulenc Films
    Inventors: Dominique Charmot, Pierre Grosjean
  • Patent number: 4877664
    Abstract: A sealed container material having a deoxidation function comprises a metallic base material reactive with oxygen and a hydrophilic coating layer of water-soluble polymer such as hydroxyethyl cellulose formed on the surface of the metallic base material. An oxygen- and moisture-permeable coating layer composed of a polymethylpentene resin may further be provided on the hydrophilic coating layer. The material exhibits an excellent oxygen absorbing ability and is thus suited as a material for sealed containers, such as cans, bottles, capsules, etc., for encasing food, drink, chemicals, and medical drugs and storing them over a long period of time without denaturation or deterioration.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: October 31, 1989
    Assignees: Nippon Steel Corporation, Suntory Limited, Kansai Paint Company, Ltd.
    Inventors: Shigeyoshi Maeda, Tsunetoshi Asai, Hidejiro Asano, Haruyoshi Taguchi
  • Patent number: 4877683
    Abstract: Laminates of polyvinyl fluoride and at least one other fluoropolymer that are free from adhesive at the interface and a process for preparing the laminates by dispersion coating a first film to form a second film and curing the second film at a temperature below the melting point of the first film.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: October 31, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Chester G. Bragaw, Jr., Thomas P. Concannon, Robert F. Davis
  • Patent number: 4876155
    Abstract: A polyester film which is provided with a permanent, antistatic coating on one surface, which coating is obtained by treating the biaxially stretch-oriented and heat-set film with an aqueous dispersion, containing at least one copolyester containing sulfonate groups, and at least one salt derived from an amino acid or a protein hydrolysate. The material can be used in the production of diazo duplicating films.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: October 24, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus Thoese, Karl-Heinz Jung
  • Patent number: RE33113
    Abstract: A pressure-sensitive recording paper comprising a support having coated thereon a layer of color former, said color former dissolved in at least one compound represented by the following formula: ##STR1## wherein n is an integer of 1 to 8, R and R' each represent a member selected from the group consisting of alkyl groups containing one to eight carbon atoms, and a hydrogen atom, p and q represent the number of alkyl groups, p+q being an integer of 1 to 3, and R and R' may be the same.
    Type: Grant
    Filed: September 17, 1976
    Date of Patent: November 14, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masataka Kiritani, Hiroharu Matsukawa, Masayuki Aoki