Organic Base Patents (Class 427/316)
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Patent number: 5654037Abstract: A process for painting a fiber reinforced composite plastic member. Prolonged pre-heating of the composite member is used to minimize defects in a subsequently applied clear resin finish coating. The finish coating is applied and curing of it commenced before the composite member has substantially cooled, effective to inhibit formation of pits and blisters in the clear finish coating, and delamination in pore areas beneath said clear finish coating.Type: GrantFiled: March 24, 1995Date of Patent: August 5, 1997Assignee: APX InternationalInventors: John H. Moore, Mark J. Marentic
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Patent number: 5620749Abstract: A process for forming a conductive substrate comprises coating onto a polyethylene terephthalate substrate an aqueous coating solution containing a conductive crosslinkable polymer with charge carrying groups such as sulfonic acid, sulfuric acid ester or quaternary ammonium salt groups attached to a polymerized ethylenic monomer backbone, a volatile amine in an amount to maintain a pH of above 7.0 and a crosslinking agent such as a polyfunctional aziridine, removing water and the volatile amine which decreases the pH to below 7.0 wherein a reaction between the crosslinkable groups of the polymer and the crosslinking agent is initiated to form a crosslinked conductive polymer film.Type: GrantFiled: August 1, 1996Date of Patent: April 15, 1997Assignee: Sterling Diagnostic Imaging, Inc.Inventors: John H. Bayless, Jr., Donald K. Johnes
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Patent number: 5593720Abstract: A multilevel electronic package comprising at least two levels, each level including a poly(aryl ether benzimidazole), a polymide and copper. A process of preparing this package is disclosed. Several novel poly(aryl ether benzimidazoles) useful in preparing this package are also set forth.Type: GrantFiled: May 23, 1995Date of Patent: January 14, 1997Assignee: IBM CorporationInventors: Kie Y. Ahn, James L. Hedrick, Jr., Jeffrey W. Labadie, Kang-Wook Lee, Robert J. Twieg, Alfred Viehbeck, George F. Walker
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Patent number: 5591491Abstract: A mixture in the form of slurry obtained from mixing a soybean protein, sugar and water is placed between a pair of electrodes. Then, an electroconductive heating process is applied to the mixture under an applied voltage between the electrodes for a predetermined time period, thereby obtaining the sheet-like biodegradable molded article. In this method, the biodegradable molded articles have a homogeneous structure and can be prepared in a short period of time without increasing the cost of equipment of creating unfavorable working conditions.Type: GrantFiled: February 2, 1995Date of Patent: January 7, 1997Assignee: Nissei Kabushiki KaishaInventors: Sadamasa Ando, Taizo Karasawa, Akio Ozasa
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Patent number: 5591482Abstract: A method of manufacturing a conductive polyurethane foam in which the polymerization is made easy, the refinement of pyrrole or the like is not required, the recovery rate of a solvent is enhanced, and the pre-treatment is not required at all; and a conductive polyurethane foam having excellent performances. This method includes a process: of coating an oxidizer solution (methanol solution containing FeCl.sub.3 and FeCl.sub.Type: GrantFiled: February 17, 1994Date of Patent: January 7, 1997Assignee: Inoac CorporationInventors: Fei-feng He, Toshihiro Yamamoto, Miwako Yamamoto
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Patent number: 5536533Abstract: A process for producing fibrous composite materials from feed stock formed reliminarily from a gypsum binder and chopped cellulose fibers, and saturating the mixture with water to the extent of at least 1.2 times its normal hydrated state, and beating the material to provide a fleece that is then spread on a flat surface and subjected to pressure for a sufficient length of time to drive out a substantial portion of the moisture from the product. The compression step is carried out long enough to achieve a bulk density of approximately 9/10 the dry bulk density of the components prior to hydration.Type: GrantFiled: March 19, 1993Date of Patent: July 16, 1996Assignees: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V., Goldbach GmbHInventors: Heinz Sattler, Volker Thole, Sebald Pallhorn, Bernhard Schmelmer
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Patent number: 5530046Abstract: A saponified ethylene-vinyl acetate copolymer is oxidation-treated in solution in a solvent mixture of water and alcohol in the presence of hydrogen peroxide and a polyvalent metal salt to provide an oxidation-treated polymer solution. This oxidation-treated polymer solution is coated on a substrate, e.g. a polymer film, to provide a laminate.Type: GrantFiled: December 13, 1994Date of Patent: June 25, 1996Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki KaishaInventors: Shinji Miyake, Junko Fujita, Hiroshi Takida
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Patent number: 5527621Abstract: The surface of a polyimide molded article such as polyimide film is treated with a solution containing a basic compound, further treated with a solution containing a silane coupling agent and then subjected to a heat treatment. This greatly improves the adhesiveness of the polyimide molded article surface to the polyimide adhesive layer formed thereon. This invention can be applied to the production of substrates for flexible wiring boards having a polyimide film/polyimide adhesive/copper foil structure.Type: GrantFiled: January 18, 1994Date of Patent: June 18, 1996Assignee: Hitachi Chemical Co., Ltd.Inventors: Hidekazu Matsuura, Yasuo Miyadera
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Patent number: 5520958Abstract: A system and method are provided for applying a desired protective finish to a web of printed label stock. The web of printed label stock is moved through a coating station, where a layer of hot melt varnish is extruded onto the web of printed label stock. Then, the web of printed label stock is transferred to a working station in an environment which causes the layer of varnish to at least partially solidify to a predetermined state as it reaches the working station. At the working station, the layer of varnish is worked to a desired finish. Preferably the web is carried through a nip formed by a pair of rolls, including a highly polished chrome roll which contacts the layer of varnish and works the layer of varnish to a glossy finish. After the layer of varnish is worked to a glossy finish, the web is directed through a finishing station, where the glossy finish is fixed in the layer of varnish, and the web is conditioned to a state in which it can be processed as a web of finished label stock.Type: GrantFiled: December 22, 1994Date of Patent: May 28, 1996Assignee: Nordson CorporationInventors: Eric J. Doesburg, Marc L. Zirkle
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Patent number: 5512333Abstract: A method of making and using a compostable paperboard container and package for liquids which is coated with a polymeric material capable of degrading under composting conditions and subsequently in the presence of light to form carbon dioxide, water, and biomass.Type: GrantFiled: April 6, 1994Date of Patent: April 30, 1996Assignee: ICD IndustriesInventor: Stuart P. Suskind
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Patent number: 5510142Abstract: The invention concerns a process for manufacturing a composite base fabric intended for the reinforcement of a waistband which is elastic in the direction of the warp, characterized in that it comprises the steps of using a warp knitting machine with weft inserts to produce a composite base fabric comprising a warp knit fabric, a fabric substrate inserted in the warp knit fabric, elastic yarns which undergo a tensional elastic deformation during the knitting, weft yarns; thermofixing the composite base fabric thus obtained; depositing a film forming coating comprising a cross-linkable resin on the face of the fabric substrate in contact with the elastic yarns and the weft yarns; drying and cross-linking the film forming coating; submitting the composite base fabric to a relaxation treatmentType: GrantFiled: September 15, 1994Date of Patent: April 23, 1996Assignee: Lainiere de PicardieInventor: Pierrot Groshens
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Patent number: 5505992Abstract: A conduit liner which is made by cladding the inner surface thereof with hot melt sprayed thereon while the conduit is heated. Preferably, the spray is polymeric material which may include a low friction additive.Type: GrantFiled: January 27, 1995Date of Patent: April 9, 1996Assignee: Technology Licensing CompanyInventor: Michael W. Ferralli
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Patent number: 5500247Abstract: In a method for producing a membrane filter for a fluid purifier, wherein the filter includes a pair of membrane layers and a spacer layer placed therebetween, a layer of membrane-forming casting solution is applied to the outer surfaces of a web of fluid-permeable starting material for the membrane layers and the spacer layer. The web-like starting material is passed through a bath so as to gel the casting solution.Type: GrantFiled: November 29, 1993Date of Patent: March 19, 1996Assignee: AB ElectroluxInventor: Peter Hagqvist
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Patent number: 5484688Abstract: Described is a process for the patterned metallisation of structured printed circuit boards in which the fully structured printed circuit board is covered with a solder stop mask, with the solder contact locations being left open, the solder stop mask is heated under such conditions that complete hardening does not yet occur and the copper surface of the printed circuit board is practically not oxidized, metal is deposited out of an aqueous bath at the exposed solder contact locations and after the metal deposit operation the mask is heated sufficiently long to a sufficiently high temperature that the mask is completely hardened throughout. The incomplete pre-hardening step prevents the solution infiltrating under the mask in the metallisation operation and thereby loosening the adhesion thereof.Type: GrantFiled: May 13, 1994Date of Patent: January 16, 1996Assignee: Morton International, Inc.Inventors: Klaus Horn, Jurgen Lingnau, Gerald Schutze, Werner Hinter
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Patent number: 5474803Abstract: The present invention is directed to a method for preparing composite particles by fixing, on the surface of a thermoplastic substance having an average particle diameter of 100 .mu.m to 10 mm, a substance having a smaller size and more excellent heat resistance than the thermoplastic substance, the method being characterized by comprising the steps of heating the substance having a smaller size and more excellent heat resistance than the thermoplastic substance up to a temperature of not less than a softening point of the thermoplastic substance with stirring in an apparatus having a stirring mechanism and a heating mechanism; putting the thermoplastic substance in the apparatus; and then fixing the substance having the excellent heat resistance on the surface of the thermoplastic substance.Type: GrantFiled: December 24, 1992Date of Patent: December 12, 1995Assignee: Nara Machinery Co., Ltd.Inventor: Yuji Kikuchi
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Patent number: 5474810Abstract: A process for producing continuous polyurethane suede-type synthetic leather including steps of applying dipping treatment to a fabric with a thickness of 0.2-2.0 mm, pressing the fabric with pressing rollers at a pressure of 0-50 kg, ironing the fabric with ironing wheels at a temperature of 50-150 C./wheel, covering the fabric with a layer of wet coating so that the fabric together with the coating has a thickness of 1.0-2.0 mm, cooling the fabric by a 0-50% DMF solution at a water temperature of 5-40 C., cleansing the fabric at a temperature of 30-100 C., pressing the fabric at a pressure of 0-5 kg, preheating the fabric with one to fifteen preheating wheels at a temperature of 50-200 C., drying the fabric at a temperature of 50-200 C. to obtain a semi-product, and slicing the semi-product into a first sheet of upper polyurethane suede-like synthetic leather and a second sheet of lower polyurethane suede-like synthetic leather with fabric.Type: GrantFiled: June 29, 1994Date of Patent: December 12, 1995Assignee: Hofa Trading Co., Ltd.Inventor: Wang M. Yen
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Patent number: 5470609Abstract: A process for repairing surface defects in plastic articles, especially plastic articles formed from fiber reinforced thermosetting resins, includes the steps of applying a powder coating composition to a defective area on the surface of a plastic article, curing the applied powder coating composition through the application of heat, and removing excess cured powder coating composition from the area of the defect to conform the area of the defect to the proper contours of the plastic article. The process can be utilized for repairing surface defects such as porosity, scratches, gouges and sand-through areas of cured thermoset substrates such as automotive body panels formed from sheet or bulk molding compounds.Type: GrantFiled: December 7, 1992Date of Patent: November 28, 1995Assignee: GenCorp Inc.Inventors: Burr L. Leach, David Hawkins
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Patent number: 5453296Abstract: A method of making an absorbent product in which pressure sensitive adhesive is used to attach the product to a user's undergarment. The product does not require release paper to protect the adhesive from unintended contact prior to use. The product is made by forming depressions in a fluid impervious barrier so as to create raised areas in the barrier that protect the adhesive. The depressions may be formed in the garment facing surface of the barrier and the adhesive applied within the depressions so that the raised areas adjacent the depressions protect the adhesive. Alternatively, the depressions may be formed in the surface of the barrier opposite the garment facing surface so as to create raised areas in the garment facing surface and the adhesive applied adjacent the raised areas.Type: GrantFiled: May 4, 1993Date of Patent: September 26, 1995Assignee: McNeil-PPC, Inc.Inventors: Nels J. Lauritzen, John T. Ulman
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Patent number: 5453299Abstract: A process is disclosed for treating aramid fibers such that metal plating applied thereto is durable, highly conductive, and strongly adherent. The process involves contacting the fibers with an acid, neutralizing and washing the fibers with water, and then plating the fibers by an electroless plating process. The acid treatment of the fibers promotes adhesion between the metal and the fibers and promotes high electrical conductivity for the plated metal.Type: GrantFiled: June 16, 1994Date of Patent: September 26, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: Che-Hsiung Hsu
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Patent number: 5447758Abstract: A screen printing process for providing long-lasting, visually-appealing images on PVC sheet material such PVC venetian blind slats, through use of a computer hardware and CAD/CAM and computer color-matching software.Type: GrantFiled: October 18, 1993Date of Patent: September 5, 1995Inventor: Andree Pelletier
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Patent number: 5443914Abstract: An enhanced acrylic for use in transparencies that provides an effective barrier to airborne environmental chemical agents that are known to craze standard stretched acrylics.Type: GrantFiled: December 17, 1993Date of Patent: August 22, 1995Assignee: NordamInventors: Robert N. Hart, Christopher S. Simmons
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Patent number: 5422142Abstract: A process is disclosed for making metal plated fibrids wherein the plating is conductive and highly durable. The process involves contacting the fibrids with an 80 to 90% sulfuric acid solution, neutralizing and washing the fibrids with water, and then plating the fibrids by an electroless plating process. The acid treatment of the fibrids promotes adhesion between the metal and the fibrids and promotes high electrical conductivity for the plated metal.Type: GrantFiled: April 11, 1994Date of Patent: June 6, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: Che-Hsiung Hsu
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Patent number: 5405643Abstract: The present invention provides an article, comprising: a fabric sheet which has been microcreped; and a curable resin coated onto the fabric sheet. The present invention involves microcreping or compacting a fabric sheet to impart stretchability and conformability to the fabric while minimizing undesirable recovery forces. Suitable fabrics for microcreping are fabrics which comprise fibers which are capable of first being mechanically compacted or "crimped" and then being set or annealed in the crimped, i.e., distorted, state. The article may be in the form of an orthopedic bandage and may optionally contain a plurality of microfiber fillers dispersed into the resin. The incorporation of microfiber fillers into the casting materials of the present invention adds substantially to the strength of the cured casting material, particularly when the fabric used therein is a non-fiberglass fabric, while not detracting from the handling properties of the uncured casting tape.Type: GrantFiled: January 25, 1993Date of Patent: April 11, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventor: Matthew T. Scholz
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Patent number: 5384160Abstract: A method for depositing an aqueous coating composition onto an ink layer or uninked surface in a printing process comprising (1) depositing a first layer of the ink onto a surface to be coated, (2) drying said ink layer, (3) determining a desired viscosity of an aqueous coating composition to be deposited onto said ink layer or said surface, said composition comprising (a) about 15-85% by weight of a film-forming polymer, said film forming polymer comprising 10-90% by weight of a high molecular weight polymer of an average molecular weight of about 30,000 to about 5,000,000 and 10-90% by weight of a low molecular weight polymer of average molecular weight of about 100 to about 20,000, (b) an amount of wetting agent effective to substantially eliminate levelling problems after deposition caused by surface tension, and (c) the remainder comprising a mixture of water and optionally a volatile organic solvent.Type: GrantFiled: March 11, 1993Date of Patent: January 24, 1995Inventor: Joseph Frazzitta
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Patent number: 5378498Abstract: An antistatic solution is disclosed to aid in the measurement of patterned resists by scanning electronic microscopes. The solution comprises a quaternary ammonium salt and a suitable solvent. The anion of the salt is selected from the group consisting of saccharinate, nitrate, sulfates, alkyl sulfates and alkoxylate. The four groups of the cation are selected from the group consisting of alkyl and alkyl derivatives.Type: GrantFiled: February 18, 1994Date of Patent: January 3, 1995Assignee: Texas Instruments IncorporatedInventors: Jing S. Shu, Chien S. Liang, Grover W. Trytten, Yvonne D. Satterfield
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Patent number: 5350603Abstract: A method for painting a plastic lineal member comprises heating the surface of the lineal member to a temperature greater than about 130.degree. F., coating the lineal member with an aqueous solution, drying the lineal member, painting the lineal member, and curing the paint on the lineal member.Type: GrantFiled: May 15, 1992Date of Patent: September 27, 1994Assignee: Owens-Corning Fiberglas Technology Inc.Inventors: Roger A. McFarland, Gordon P. Armstrong
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Patent number: 5336526Abstract: In an on-line annealing process for rigid laminated sheets of reinforced thermoplastic material wherein an annealing chamber is maintained at a desired temperature by introducing heated air to impinge on a deflection plate within the annealing chamber, annealing of the thermoplastic sheets is improved by introducing heated air through a pair of elongated perforated tubes within the annealing chamber so that heated air is diffused so as to flow evenly across both sides of the rigid thermoplastic sheet as the sheet passes through the annealing chamber.Type: GrantFiled: April 12, 1991Date of Patent: August 9, 1994Assignee: Phillips Petroleum CompanyInventors: Kevin J. Spoo, Roy G. Thompson
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Patent number: 5330782Abstract: A colored porous polytetrafluoroethylene material prepared by impregnating a colorant in a porous polytetrafluoroethylene material having a fine fiber structure consisting of fibers and nodes connected to one another through the fibers, and then heating the porous material at a temperature of at least a melting point of the porous material has porosity inherently possessed by the porous material and no distortion of a colored line.Type: GrantFiled: December 11, 1992Date of Patent: July 19, 1994Assignee: Sumitomo Electric Industries, Ltd.Inventor: Shin-ichi Kanazawa
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Patent number: 5284681Abstract: A surface treatment method of a polyamide resin composition molded article is disclosed, comprising bringing the surface of a polyamide resin composition molded article into contact with water, said polyamide resin composition molded article comprising (C) 100 parts by weight of a resin composition comprising (A) from 10 to 80% by weight of a polyamide resin and (B) from 20 to 90% by weight of other thermoplastic resin; and (D) from 0 to 20 parts by weight of at least one modifier selected from a carboxylic acid having at least 2 carboxyl groups in the molecule or a derivative thereof, an amine containing at least 2 nitrogen atom in the molecular, urea or a derivative thereof, and a low-molecular weight polyamide. A coating method of a polyamide resin composition molded article is also disclosed, comprising, after bringing the surface of a resin composition molded article into contact with water, coating the surface with a coating composition.Type: GrantFiled: October 28, 1992Date of Patent: February 8, 1994Assignee: Sumitomo Chemical Co., Ltd.Inventors: Hideo Shinonaga, Kiyoshi Mitsui, Yasuro Suzuki, Satoru Sogabe
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Patent number: 5248522Abstract: A method for manufacturing a polyester film is disclosed which comprises a polyester film before completion of orienting crystalization and, provided thereon, a sublayer comprising a copolymer containing 70 to 99.5 wt % of vinylidene chloride, and an antistatic layer comprising an ionic polymer, in that order. A coating solution is coated on the polyester film to form the sublayer with a dry thickness of 1 to 20 g/m.sup.2. The total solid content of the coating solution is not less than 4 wt %, and the coating solution contains a latex of the copolymer with an average particle size of 0.05 to 0.3 .mu.m. Heat is applied at a temperature not less than 30.degree. higher than the melting point of the copolymer, and the antistatic layer is formed on the sublayer.Type: GrantFiled: September 3, 1991Date of Patent: September 28, 1993Assignee: Konica CorporationInventors: Hiromitsu Araki, Takatoshi Yajima, Eiichi Ueda
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Patent number: 5230929Abstract: The present invention refers to coatings produced by means of the deposit of thin films formed by plasma-activated chemical vapor deposition of volatile fluoridated cyclic siloxanes having the structure [RR'SiO].sub.x, where R is an alkyl group with 1-6 carbon atoms, R' is a fluorinated alkyl group with 3-10 carbon atoms, the carbon in the alpha and beta positions with respect to the silicon atom is hydrogenated and x is 3 or 4. These particular coatings are useful because of their properties of protection and insulation.Type: GrantFiled: July 20, 1992Date of Patent: July 27, 1993Assignee: Dow Corning CorporationInventors: Gerardo Caporiccio, Riccardo D'Agostino, Pietro Favia
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Patent number: 5164240Abstract: The present invention provides a nonwoven composite and a process for making a nonwoven composite suitable for making shoe counters comprising: (1) dispersing an effective amount of a thermoplastic resin throughout the interstitial space of a nonwoven fabric having two fabric surfaces wherein the first fabric surface has a velvety or felt texture and the second fabric surface has a fused surface thereby forming a thermoplastic resin-loaded nonwoven fabric; thereafter heating said thermoplastic resin-loaded fabric in a manner which impregnates said thermoplastic resin onto the nonwoven fabric thus forming said nonwoven composite with one velvety or felt surface substantially free of thermoplastic resin in the absence of buffing.Type: GrantFiled: March 9, 1990Date of Patent: November 17, 1992Assignee: Phillips Petroleum CompanyInventors: Kenneth W. Burgess, John Proctor
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Patent number: 5153024Abstract: A process for the manufacture of a multilayer printed circuit board including the step of depositing a noble metal onto an electrically non-conducting substrate. The substrate is first coated with a layer of polyamine polymer modified by being contacted with a compound containing at least two functional groups reactive to amino groups. The coated substrate is then contacted with noble metal ions.Type: GrantFiled: November 20, 1990Date of Patent: October 6, 1992Assignee: Akzo nvInventor: Jan A. J. Schutyser
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Patent number: 5151304Abstract: The surface of a substrate made of substantially crystalline polyimide is converted to form a layer of substantially amorphous polyimide. The substantially amorphous layer is formed by treating the crystalline polimide surface with a base followed by treatment with an acid to form a polyamic acid layer, which is reimidized to form a substantially amorphous layer by a low temperature heat cycle. Metals or polyimides can be deposited onto this amorphous layer, which is then cured to convert the amorphous layer to substantially crystalline polyimide. This process enhances the adhesion of the metal or polyimide layer without introducing contamination (new foreign materials or new functional groups) from surface treatments of adhesion layers.Type: GrantFiled: January 22, 1991Date of Patent: September 29, 1992Assignee: International Business Machines CorporationInventor: Kang-Wook Lee
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Patent number: 5151379Abstract: The present invention relates to a color filter substrate and a color filter electrooptical device, for example, such as color liquid crystal display device having a transparent electrode over a color filter formed on an inner surface of the liquid crystal display device.For providing the transparent electrode on the color filter, high-frequency ion plating method is used so as to improve the contacting property with an organic polymer of the color filter layer and the transparent electrode.Type: GrantFiled: February 24, 1992Date of Patent: September 29, 1992Assignee: Seiko Instruments Inc.Inventors: Mitsuru Suginoya, Hitoshi Kamamori, Takakazu Fukuchi
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Patent number: 5145718Abstract: A tape comprising a biaxially-oriented backing made from a polymeric film bearing on one major surface thereof a layer of pressure-sensitive adhesive and on the other major surface thereof a layer of low-adhesive backsize composition. The backing and the layer of pressure-sensitive adhesive intermix so as to form a commingled layer between them.Type: GrantFiled: November 22, 1991Date of Patent: September 8, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: James J. Pedginski, Ronald B. Birkholz
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Patent number: 5130192Abstract: A process for preparing a metallized polyimide film, comprising the steps of: forming a solidified film containing 100 parts by weight of an aromatic polyamic acid in the form of a solution obtained by polymerizing approximately equal moles of an aromatic tetracarboxylic acid component and an aromatic diamine component and 5 to 150 parts by weight of an organic polar solvent; applying a surface treatment solution containing a heat-resistant surface treating agent to the surface of the solidified film; heating the solidified film to a high temperature to imidize the polyamic acid, while drying the film to prepare a polyimide film; forming a thin metal vapor-deposited layer by a vapor deposition of a metal on the treated surface of the polyimide film with the heat-resistant surface treatment agent; and applying metal plating onto the metal vapor deposited layer to form a metal plated layer thereon.Type: GrantFiled: November 15, 1990Date of Patent: July 14, 1992Assignee: Ube Industries, Ltd.Inventors: Seiichirou Takabayashi, Kazuaki Mii, Kenichiro Yano
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Patent number: 5118532Abstract: A method of producing decorative web from nonwoven polyester web includes heat setting the web at a temperature between 390 and 410 degrees Farenheit before applying a pigmented, solvent soluble, thermoplastic resin composition to at least one side of the web. The composition can include a polymer solution, which includes a vinyl polymer such as one or both of a polyvinyl chloride homopolymer resin and a polyvinyl chloride acetate copolymer resin, a solvent, plasticizers, heat stabilizers, light stabilizers, pigments and antistats. The composition also preferably may include fillers, soil repellents, and flame retardants. The composition is applied by a knife-over-roll apparatus, a rotogravure printer, or other conventional applicating apparatus. After the composition is applied, the web is passed through a hot air oven maintained at a temperature in the range of from about 230.degree. F. to about 330.degree. F. to dry the web of solvent and cure the composition to form solids in the web.Type: GrantFiled: February 28, 1991Date of Patent: June 2, 1992Assignee: VyTech Industries, Inc.Inventors: Ann H. Batson, J. Bennett Billings, D. Gregory Royster
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Patent number: 5096742Abstract: Provided is a method for stabilizing an optical recording medium containing a polycarbonate substrate. The method comprises treating the substrate material in a high temperature, high humidity environment for an extended period of time. Dramatic improvements in the useful life of the optical recording medium in which the treated polycarbonate substrate is used have been found to result.Type: GrantFiled: January 9, 1990Date of Patent: March 17, 1992Assignee: Hoechst Celanese CorporationInventors: David E. Nikles, Charles E. Forbes
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Patent number: 5093152Abstract: Process for protecting a transparent optical substrate which is polymeric and has a vitreous transformation temperature and is selected from the group consisting of polycarbonate, polymethylmethacrylate, polystyrene acrylonitrile, crystalline polystyrene, polyimide, polyester, polyamide, polyvinyl chloride and glass, by deposition of an inorganic continous and transparent film consisting essentially of silicon, carbon, nitrogen, oxygen and hydrogen of the formula Si C.sub.x N.sub.y O.sub.z H.sub.t, in whichx is between 0 and 5y is between 0.3 and 0.8z is between 1.3 and 2.5t is between 0.5 and 1.2.A surface of the substrate is exposed to a plasma at a temperature below the temperature of vitreous transition of the substrate in the presence of precursors of Si, C, N, O and H is gaseous form, the precursor gas of the silicon being selected from the group consisting of SiH.sub.4, Si.sub.2 H.sub.6 and Si.sub.3 H.sub.Type: GrantFiled: June 7, 1990Date of Patent: March 3, 1992Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Claude Bonet, Francois Coeuret, Sylvie Nowak, Jean-Marie Gauthier
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Patent number: 5069965Abstract: Rubber and vinyl articles such as gloves with improved slip coatings and processes for their production are provided by coating the outer and/or inner surfaces with either (1) a copolymer of at least one copolymerizable vinyl halide, at least one copolymerizable ethylenically unsaturated hydrocarbon and at least one copolymerizable ethylenically unsaturated monomer containing a carboxyl or amido group, (ii) copolymer of at least one copolymerizable vinyl or vinylidene halide, acrylonitrile and at least one acryulic monomer, or mixtures of (i) and (ii).Type: GrantFiled: March 23, 1990Date of Patent: December 3, 1991Assignee: Bioresearch, Inc.Inventor: Pascal E. Esemplare
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Patent number: 5059447Abstract: A shaped body formed of a synthetic organic polymer is surface-treated for increasing the surface energy by a spark discharge treatment which is preceded and/or followed by a treatment with a UV ray-absorbing organic liquid and/or a UV irradiation treatment.Type: GrantFiled: February 15, 1990Date of Patent: October 22, 1991Assignee: Director-General of Agency of Industrial Science and TechnologyInventors: Koichiroh Katoh, Etsuji Takehara, Yoshiie Matsumoto
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Patent number: 5021297Abstract: A method of coating plastic substrates susceptible to gassing with a powder coating composition is disclosed. The method is effective in sealing the substrate against popping.Type: GrantFiled: December 2, 1988Date of Patent: June 4, 1991Assignee: PPG Industries, Inc.Inventors: Frederick F. Rhue, William D. Franks, Gary C. Craig
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Patent number: 5019444Abstract: A polyvinylidene fluoride product having at least one surface with improved adhesion to an incompatible polymer, said at least one surface covered with a porous polyvinylidene fluoride layer adhered thereto without a bonding intermediate, the process of forming the polyvinylidene fluoride product, and laminates thereof with non-adherent polymers.Type: GrantFiled: June 5, 1989Date of Patent: May 28, 1991Assignee: AtochemInventors: Gilbert Duperray, Daniel Wolff
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Patent number: 4999220Abstract: In manufacturing perpendicular magnetic recording medium wherein a magnetic layer containing Co and Cr as main contents on a running substrate of polymer film incident angle (.phi..sub.f) of vaporized atom to form said magnetic layer is 30.degree. or larger at the final part of the film formation to improve manufacturing capacity, and magnetic layer (119) is heated after forming the magnetic layer in an oxygen-containing atmosphere.Type: GrantFiled: February 16, 1989Date of Patent: March 12, 1991Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuyoshi Honda, Ryuji Sugita, Kiyokazu Tohma, Yasuihiro Kawawake, Yoshiki Murakami
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Patent number: 4999222Abstract: A metallized high specular gloss polyethylene plexifilamentary film-fibril sheet with very low emissivity is made by a process of calendering a polyethylene film-fibril sheet between a smooth metal roll and a soft, resilient roll to form a sheet of high specular gloss, followed by vacuum metallization of the smooth high specular gloss surface. Such metallized sheets are useful as radiant barriers or roof liners for energy savings purposes.Type: GrantFiled: July 10, 1989Date of Patent: March 12, 1991Assignee: E. I. du Pont de Nemours and CompanyInventors: David C. Jones, Chi-Chang Lee
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Patent number: 4990368Abstract: Flame retardant properties are imparted to a textile substrate by application of a powdered flame retardant in solid form, which is then fused or melted onto the textile to durably attach the flame retardant to the textile. The process is especially adapted for water-insoluble solid flame retardants, such as hexabromocyclododecane, currently applied in dispersion or emulsion form.Type: GrantFiled: June 13, 1989Date of Patent: February 5, 1991Assignee: Burlington Industries, Inc.Inventors: James R. Johnson, Arvind D. Joshi
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Patent number: 4980205Abstract: A fibrous material, such as fiberglass insulation, is treated to minimize the generation of static electricity when subjected to agitation, such as by sawing, chopping, blowing, etc. during manufacturing, handling and/or installation, by applying an anti-static composition onto a mat of the material during the manufacturing process. The anti-static composition preferably is an aqueous solution containing an active anti-static agent including a nonflammable glycol humectant and two water soluble quaternary ammonium compounds, one serving as the primary anti-static ingredient and the other serving as a corrosion inhibitor and stabilizer. The anti-static composition is sprayed onto the surface of the mat as it travels through the cooling zone and the cooling air drawn through the mat causes the anti-static agent to penetrate through substantially the entire thickness of the mat.Type: GrantFiled: June 14, 1988Date of Patent: December 25, 1990Assignee: Share CorporationInventor: Malcolm W. Haskell
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Patent number: 4960617Abstract: The present invention includes a coated polyolefin particle and a method for post-reactor stabilization of polyolefins comprising:melting a polyolefin wax;blending at least one additive into the liquid polyolefin wax;fluidizing polyolefin particles to be stabilized with a hot gas;spraying the liquid polyolefin wax containing at least one additive on the fluidized polyolefin particles, and forming at least partially coated polymer particles;maintaining the at least partially coated polymer particles and fluidized polyolefin particles at a temperature which is sufficiently high to prevent the formation of fibers from the wax and which enhances the formation of stabilized polymer particles.Type: GrantFiled: April 3, 1989Date of Patent: October 2, 1990Assignee: Shell Oil CompanyInventors: Ananda M. Chatterjee, Dale J. Wilpers
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Patent number: 4927495Abstract: A support for photographic printing paper containing a base paper having polyolefin coated on both surfaces thereof, wherein as the base paper is used a one side-machine glazed paper having a glossy surface which is obtained by bringing one surface of a wet paper into intimate contact with the mirror surface of a heated mirror surface type drier and drying.Type: GrantFiled: August 29, 1988Date of Patent: May 22, 1990Assignee: Fuji Photo Film Co., Ltd.Inventor: Shigehisa Tamagawa