Including Nitrogen Containing Condensation Polymer (e.g., Polyurethane, Polyisocyanate, Etc.) Patents (Class 428/355N)
  • Patent number: 6165602
    Abstract: A laminated polyester film stretched in at least one direction, comprising:a polyester support, andat least one enhanced adhesion layer laminated on the polyester support, comprising a composition comprising:(1) an aromatic copolyester (A1) having a water-dispersible functional group, a polyvinyl alcohol resin (B1), and a vinylpyrrolidone copolymer resin (C1); or(2) an aromatic copolyester (A1) having a water-dispersible functional group, a polyvinyl alcohol resin (B1), and a polyglycerol polyglycidyl ether (C2); or(3) an aqueous-type polyurethane (A3), a polyvinyl alcohol resin (B3), and inert particles wherein the thickness (L) of the adhesion layer and the average particle diameter (d) of said inert particles satisfies the equation1/3.ltoreq.d/L.ltoreq.3.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: December 26, 2000
    Assignee: Mitsubishi Polyester Film Corporation
    Inventor: Masato Fujita
  • Patent number: 6159611
    Abstract: A flexible, high dielectric constant polyimide film composed of either a single layer of an adhesive thermoplastic polyimide film or a multilayer polyimide film having adhesive thermoplastic polyimide film layers bonded to one or both sides of the film and having dispersed in at least one of the polyimide layers from 4 to 85 weight % of a ferroelectric ceramic filler, such as barium titanate or polyimide coated barium titanate, and having a dielectric constant of from 4 to 60. The high dielectric constant polyimide film can be used in electronic circuitry and electronic components such as multilayer printed circuits, flexible circuits, semiconductor packaging and buried film capacitors.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: December 12, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Yueh-Ling Lee, Gary Min
  • Patent number: 6143409
    Abstract: Described is an adhesive containing a polycarbodiimide resin having repeating units represented by the following formula:.paren open-st.R--N.dbd.C.dbd.N.paren close-st..sub.nwherein R is a divalent hydrocarbon group and n is an integer of 5 to 250, and also described is a flexible printed circuit board and a coverlay film fabricated using the above-described polycarbodiimide resin-containing adhesive.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: November 7, 2000
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yasuyoshi Komoto, Akira Hayashida, Michio Aizawa, Hitoshi Arai, Ken Yahata
  • Patent number: 6139967
    Abstract: The present invention provides a clinging sheet which comprises a base film and a clinging layer formed on one or both surfaces of the base film, said clinging layer comprising a siloxane-modified polyurethane resin containing 2 to 50 percent by weight of a polysiloxane component. The clinging sheet can be clung to an adherend having a smooth surface, easily peeled therefrom without damaging the clinging sheet or staining the adherend, and clung repeatedly to the same adherend or other adherends.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: October 31, 2000
    Assignee: Lintec Corporation
    Inventors: Tosiaki Tozuka, Tomisi Shibano
  • Patent number: 6132865
    Abstract: An adhesive tape for electronic parts which comprises a metal substrate and an adhesive layer A and an adhesive layer B laminated in order on at least one side of said metal substrate, wherein said adhesive A comprises a polyimide consisting of 100 -20% by mol of the repeating unit represented by the following formula (1a) and 0-80% by mol of the repeating unit represented by the following formula (1b), said adhesive B comprises a polyimide consisting of 100-40% by mol of the repeating unit represented by the following formula (1a) and 0-60% by mol of the repeating unit represented by the following formula (2), and the adhesive layer A and the adhesive layer B have each a different glass transition temperature: ##STR1## wherein Ar represents a divalent group selected from the specified structures containing aromatic rings, R is an alkylene group having 1 to 10 carbon atoms or --CH.sub.2 OC.sub.6 H.sub.4 --, the methylene group of which attaches to Si, and n means an integer of 1 to 20.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: October 17, 2000
    Assignee: Tomoegawa Paper Co., Ltd.
    Inventors: Osamu Oka, Jun Tochihira, Fumiki Komagata
  • Patent number: 6129971
    Abstract: An article comprising a substrate, and a textured, matte-finish, low adhesion backsize coating on one surface of the substrate, wherein the coating comprises polyvinyl carbamate having nitrogen-bonded hydrocarbon side chains which provide terminal alkyl groups more than five carbons in length.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: October 10, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Patricia J. A. Brandt, John T. Capecchi, Scott D. Anderson
  • Patent number: 6120886
    Abstract: A film wrap coating used to coat both metallic and non-metallic profiles for architectural and/or automotive components including a PVC backing layer which is bonded and at least partially cross-linked to a polyvinyl fluoride (PVF) film layer, and a paint or pigment layer applied to the PVF layer, most preferably, the paint is a thermally reflective latex paint. The film wrap is formed by aligning a sheet of PVF overtop of a flexible sheet of PVC. Following the alignment of the PVC and PVF sheets, a third layer of paint is then applied to the exposed surface of the PVF sheet and the three layers are heated so that the PVC and PVF sheets fuse to each other resulting in at least partial cross-linking therebetween, and the paint on the pigment layer cures and fuses to the PVF sheet.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: September 19, 2000
    Assignee: 1334495 Ontario Inc.
    Inventors: Michael Grafe, Alan Grafe, Martin Sheeran
  • Patent number: 6117510
    Abstract: An adhesive-applied tape prepared by coating a support film with a solution obtained by dissolving in an organic solvent a mixture of an epoxy resin and an amorphous polyimidosiloxane produced from an aromatic tetracarboxylic dianhydride or its derivative and a diamine comprising an aromatic diamine which comprises an aromatic diamine having a functional group which can react with an epoxy group and a diaminopolysiloxane, and then drying it at a temperature at which the epoxy resin is not cured to provide a tack-free adhesive layer with no surface tackiness. The tape is both flexible and heat resistant, and does not require high-temperature, high-pressure contact bonding conditions upon contact bonding.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: September 12, 2000
    Assignee: Ube Industries, Ltd.
    Inventors: Seiji Ishikawa, Hiroshi Yasuno
  • Patent number: 6093464
    Abstract: A pressure-sensitive adhesive composition with a pressure-sensitive adhesive property and heat resistance comprises a polyester having a polylactone structure as the main chain. A pressure-sensitive adhesive sheet with a releasing property of a peelable liner and containing no silicone can be obtained by using the pressure-sensitive adhesive composition in combination with a polyolefin film without being subjected to a silicone treatment as a peelable liner. When the pressure-sensitive adhesive sheet comprises a base material having formed thereon the layer of the pressure-sensitive adhesive composition and the back side of the base material has a surface composed of a polyolefin, neither a peelable liner nor a silicone treatment is required. The pressure-sensitive adhesive sheet is suitably used for computer instruments etc., because it contains no silicone.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: July 25, 2000
    Assignee: Nitto Denko Corporation
    Inventors: Yasuyuki Tokunaga, Masahiko Ando, Takeshi Yamanaka, Waka Hikosaka
  • Patent number: 6090483
    Abstract: Disclosed are (1) an adhesive sheet for printing comprising a layer to be printed having no release coat, and at least an adhesive layer having an adhesive strength of 1 to 5000 gf/50 mm to the layer to be printed, and (2) a label having a heat transfer pattern comprising a heat fixing ink comprising a polyolefin and a colorant on the layer to be printed of the adhesive sheet for printing.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: July 18, 2000
    Assignee: Nitto Denko Corporation
    Inventors: Katsuya Kume, Hidetoshi Itou, Katsuyuki Okazaki, Mitsuo Kuramoto
  • Patent number: 6087463
    Abstract: A reactive hot melt adhesive containing, as the main component, a blocked prepolymer made by reacting a linear prepolymer having isocyanate groups with a blocking agent, said blocked prepolymer having a number average molecular weight of at least 11,000 and a melt viscosity of at least 1,000 poise at a temperature of 110.degree. C.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: July 11, 2000
    Assignee: Asahi Glass Company Ltd.
    Inventors: Masako Tada, Kaoru Oguro, Josho Kashiwame
  • Patent number: 6074719
    Abstract: A multi-layer article comprises a fluoropolymer layer comprising interpolymerized units derived from vinylidene fluoride, and a melt-processable, substantially non-fluorinated polymer layer comprising a polyamide, polyimide, polyurethane, or a carboxyl, anhydride, or imide functionalized polyolefin. The non-fluorinated polymer layer further contains an aliphatic di-, or polyamine which provides increased adhesion between the fluoropolymer layer and the non-fluorinated polymer layer.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: June 13, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Tatsuo Fukushi, Paul J. Wang
  • Patent number: 6071833
    Abstract: A patch for repair or finishing of surfaces, such as drywall or plaster walls and ceilings, wherein the patch includes a liquid-hardenable material (such as a water-hardenable material) coated on and/or impregnated in a substrate or carrier. The patch is wetted and then applied to the surface of the wall or ceiling and pressed against the surface. The liquid-hardenable material becomes gel-like and adheres the patch to the surface. Upon drying, it sets to a hard coating overlying a hole, crack, recess or joint in the wall or ceiling. If necessary, joint compound or the like can be applied to the edges of the patch to provide a smooth taper to the surrounding surface. The liquid-hardenable material can be a cement, plaster, resin or glass composition. The carrier can be paper, or a fabric comprised of natural or synthetic fibers.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: June 6, 2000
    Inventors: Albert D'Alisa, Scott Frey, Dana Owen, Mark Viola
  • Patent number: 6068932
    Abstract: A thermosetting resin composition for a fixing treatment of electronic parts, which is able to adhere in short time at low temperature, has a heat resistance, is lowly hygroscopic, and hardly produces package cracks, etc.The thermosetting resin composition comprises polycarbodiimide which is soluble in organic solvents and silicone-modified polyimide which is soluble in organic solvents, which are compounded.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: May 30, 2000
    Assignee: Nitto Denko Corporation
    Inventors: Michie Sakamoto, Amane Mochizuki, Masahiro Yoshioka, Yuji Hotta
  • Patent number: 6045886
    Abstract: This invention provide an adhesive tape and a liquid adhesive for electronic parts having sufficient thermal resistance and reliability. The adhesive tape comprises adhesive layers composed of at least a polyimide comprising the repeating units represented by the formulas (1) and (2) on both sides of the substrate, one of said adhesive layer having a higher glass transition temperature than that of the other adhesive layer: ##STR1## wherein X is --SO.sub.2 -- and/or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--,Ar is a divalent group containing aromatic rings, and R is an alkylene group having 1 to 10 carbon atoms or --CH.sub.2 OC.sub.6 H.sub.4 --, and n means an integer of 1 to 20.The stustrate may be a resin layer composed of the above mentioned polyimide.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: April 4, 2000
    Assignee: Tomoegawa Paper Co., Ltd.
    Inventors: Osamu Oka, Takeshi Nishigaya
  • Patent number: 6042909
    Abstract: The invention features an empty device for receiving a bioactive agent. The device includes a biocompatible and semi-permeable membrane that defines an enclosed space; the membrane also has at least one end that defines an opening for introducing the bioactive agent into the enclosed space. The device is configured to be placed in an animal.In one embodiment of the invention, the membrane has an inner surface and an outer surface, where the inner surface defines the inner surface, and includes a biocompatible adhesive in the general region of the opening to allow sealing of the opening after the introduction of the bioactive agent into the enclosed space.Another embodiment of the invention includes a biocompatible frame mounted in supporting relationship to the membrane and defining an opening for introducing the bioactive agent into the enclosed space. The frame has greater porosity than the membrane.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: March 28, 2000
    Assignee: Circe Biomedical, Inc.
    Inventors: Karen E. Dunleavy, Timothy J. Perlman, Kerry A. Gagnon, Claudy J. P. Mullon
  • Patent number: 6040028
    Abstract: The present invention relates to highly elastic polyurethane contact adhesives, a process to coat substrates with these contact adhesives, and the coated substrates produced by this process. This invention requires a) a polyisocyanate with a functionality of less than about 4 and b) a polyol blend comprising 1) about 90 to 100% polyethers with molecular weights from about 1,800 to 12,000 and average functionality from about 1.5 to about 4, and 2) up to about 10% of chain extenders with molecular weights from about 60 to 400 and average functionality from about 1.5 to about 3. The functionalities and amounts of components a) and b) are such that the molecular weight between crosslinks is from about 7,000 to about 16,000 and the equivalent ratio of isocyanate groups to isocyanate-reactive groups is from about 80:100 to about 120:100 and the urethane group content is from about 1 to about 8%. It is preferred that at least one of components a) and b) have a functionality of greater than about 2.2.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: March 21, 2000
    Assignee: Bayer Corporation
    Inventors: Robert L. Cline, James W. Rosthauser, Peter H. Markusch
  • Patent number: 6004670
    Abstract: A multi-cycle refastenable contact responsive non-tacky fastener system and method of use with a field of a contact responsive fastening layer having essentially no surface tack. The fastening layer is multiply releasable and refastenable against a non-tacky target surface, and has substantially constant 90.degree. peel strength of less than about 5 kN/m when in contact with the target surface. A mounting layer comprises a field of a pressure sensitive adhesive onto which the field of the contact responsive layer is directly attached.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: December 21, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James J. Kobe, Maurice E. Freeman, Bradley D. Zinke, Shih-Lai Lu, Jason A. Chesley, Eric V. Malmberg, Robert G. Shaw
  • Patent number: 5993960
    Abstract: A printing sheet having a high gloss and an enhanced ink-setting property has an outermost surface coating layer formed on a substrate sheet from an electron beam-cured resin produced from at least one electron beam-curable unsaturated organic compound having a dimer acid structure derived from unsaturated higher fatty acid.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: November 30, 1999
    Assignee: New Oji Paper Co., Ltd.
    Inventors: Yasufumi Nakayama, Masahiro Kamiya, Shinichi Nagasaki, Yoshihide Kawano, Toshifumi Fujii
  • Patent number: 5989689
    Abstract: A sandblast mask laminate useful in sandblasting operations is disclosed. The laminate comprises a photoresist mask layer, a pressure sensitive adhesive composition comprising a non-elastomeric resin and a tackifier in combination to produce a composition having a T.sub.g of less than about -40.degree. C., a carrier film layer and a release liner.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: November 23, 1999
    Assignee: The Chromaline Corporation
    Inventor: Toshifumi Komatsu
  • Patent number: 5955512
    Abstract: A pressure sensitive adhesive composition is disclosed which comprises an acrylic copolymer (A), an energy beam polymerizable urethane acrylate oligomer (B) and an energy beam polymerizable compound having one acryloyl group or methacryloyl group in each molecule thereof (C). This composition is preferred to further contain a plasticizer (D), a crosslinking agent (E) and/or a photopolymerization initiator (F) according to necessity. The pressure sensitive adhesive composition has satisfactory pressure sensitive adherence and initial adhesion before the irradiation with energy beam and the adhesive strength thereof is sharply reduced with maintaining the rubber elasticity after the irradiation with energy beam. Further, the pressure sensitive adhesive composition ensures excellent chip alignability in the expanding step subsequent to dicing.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: September 21, 1999
    Assignee: Lintec Corporation
    Inventors: Hideki Numazawa, Yoshihisa Mineura
  • Patent number: 5916675
    Abstract: Described is an adhesive containing a polycarbodiimide resin having repeating units represented by the following formula:.paren open-st.R--N.dbd.C.dbd.N.paren close-st..sub.nwherein R is a divalent hydrocarbon group and n is an integer of 5 to 250, and also described is a flexible printed circuit board and a coverlay film fabricated using the above-described polycarbodiimide resin-containing adhesive.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: June 29, 1999
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yasuyoshi Komoto, Akira Hayashida, Michio Aizawa, Hitoshi Arai, Ken Yahata
  • Patent number: 5908694
    Abstract: A heat-transfer label that is well-suited for use on untreated polyethylene. In one embodiment, the label includes a support portion, the support portion comprising a paper carrier web. The label also includes a wax release layer overcoating the paper carrier web. The label further comprises a transfer portion printed on top of the wax release layer, the transfer portion including a protective lacquer layer, an ink layer and an adhesive layer. The protective lacquer layer is printed onto the wax release layer and comprises a polyester resin, castor oil and a chlorinated polypropylene capable of immobilizing the ink layer relative to the protective lacquer. The ink layer, which comprises an acrylic ink, is printed onto the protective lacquer layer. The adhesive layer is printed over the ink layer and comprises a polyamide resin, ethyl vinyl acetate, erucamide and a chlorinated polyethylene resin.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: June 1, 1999
    Assignee: Avery Dennison Corporation
    Inventors: Onsy Y. Makar, Samuel H. Stein
  • Patent number: 5908695
    Abstract: A multi-cycle refastenable contact responsive non-tacky fastener system and method of use with a field of a contact responsive fastening layer having essentially no surface tack. The fastening layer is multiply releasable and refastenable against a non-tacky target surface, and has substantially constant 90.degree. peel strength of less than about 5 kN/m when in contact with the target surface. A mounting layer comprises a field of a pressure sensitive adhesive onto which the field of the contact responsive layer is directly attached.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: June 1, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James J. Kobe, Maurice E. Freeman, Bradley D. Zinke, Shih-Lai Lu, Robert G. Shaw
  • Patent number: 5869161
    Abstract: Disclosed is a tape which comprises a non-tacky, free-standing, 90 to 100% imidized polyimide film containing 0.1 to 30 wt % of a solvent having a releasable film adhering to at least one side. The film is used to form coatings on substrate or as an adhesive to bond substrates together.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: February 9, 1999
    Assignee: Occidental Chemical Corporation
    Inventor: Jin-O Choi
  • Patent number: 5851616
    Abstract: The present invention provide a novel polyimide which is soluble in organic solvents and excels in heat resistance, and to a process for producing the polyimide. The polyimide of the present invention comprises a repeating unit represented by the formula (1) and having a number average molecular weight of from 4,000 to 200,000. ##STR1## wherein X is --SO.sub.2 -- or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: December 22, 1998
    Assignee: Tomoegawa Paper Co., Ltd.
    Inventors: Osamu Oka, Takeshi Nishigaya, Fumiyoshi Yamanashi
  • Patent number: 5851661
    Abstract: The present invention relates to polyurethane hot melt adhesives that are hardened by the action of moisture and which contain at least one reaction product from a component that contains NCO groups and an essentially linear hydroxypolyester, hydroxypolyether, and/or hydroxypolyetherester component. In addition, the present invention relates to a procedure for manufacturing a material that is permeable to water only in vapor form, this being in the form of a fiber material, in particular in the form of a web, which is joined to a polyurethane film, in which the fiber material is coated with a polyurethane material and subsequently the polyurethane material is hardened to form a water-vapor permeable film. The present invention also relates to a material that is permeable to water only in vapor form and which is in the form of a fiber material, in particular in the form of a web, that is bonded to a polyurethane film.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: December 22, 1998
    Assignee: H.B. Fuller Licensing & Financing, Inc.
    Inventors: Harald Werenicz, Franz Maitz, Walter Nussbaumer, Ludwig Stingl, Franz Peter Schmitz
  • Patent number: 5830949
    Abstract: An adhesive resin composition comprising a polycarbodiimde resin and a bisalkenyl-substituted nadimide and an adhesive sheet using the resin composition.The adhesive resin composition can adhere in a short time even at low temperature, has a high heat resistance, has a low hygroscopic property, and is hard to cause package crackings, etc.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: November 3, 1998
    Assignee: Nitto Denko Corporation
    Inventors: Amane Mochizuki, Michie Sakamoto, Masahiro Yoshioka, Yuji Hotta
  • Patent number: 5783302
    Abstract: TPE's which comprise A blocks or B blocks or both A blocks and B blocks, which are crystalline and in which at least a part of the crystallinity result from the presence of crystallizable side chains. Such crystalline blocks are referred to as SCC blocks. TPE's containing SCC A blocks are novel and as such form part of the present invention. The invention also includes processes, compositions, shaped articles and assemblies which make use of TPE's containing SCC A blocks.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: July 21, 1998
    Assignee: Landec Corporation
    Inventors: Steven P. Bitler, Raymond Clarke, David A. Kemp, Ray F. Stewart, Valentine Y. Yoon, Robert G. Freelin
  • Patent number: 5784198
    Abstract: An encapsulated lens retroreflective sheeting that has a bonding layer that consists essentially of a thermoplastic polyurethane resin that has a softening point of 70.degree. C. to 200.degree. C. The bonding layer is sealed to a light transmissible surface protective layer by a multitude of bonds that form spaces between the protective layer and the bonding layer. Retroreflective elements are partially embedded in the bonding layer and interface with air in the spaces. An encapsulated lens retroreflective sheeting of this construction can be adhered to a highly plasticized plastic surface and maintain high adhesion force for an extended duration while at the same time maintaining good retroreflective performance.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: July 21, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Yoshiyuki Nagaoka
  • Patent number: 5725947
    Abstract: The invention relates to a film composite comprising a thin flexible backing bearing a first layer of adhesive comprising a blend of from 10-99 wt. % of an acrylic latex and from 1 to 90 wt. % of heat-activatable urethane latex, and a second adhesive layer applied on top of said first adhesive layer comprising a pressure-sensitive adhesive exhibiting an initial adhesion as to allow reliable positioning and initial removability of said film composite on a substrate and an adhesion build-up to permanently bond the film composite to the substrate after a prolonged dwell time. The invention further-more relates to the use of a film composite comprising a thin flexible backing bearing a first adhesive layer comprising a blend of from 10-99 wt. % of an acrylic latex from 1 to 90 wt.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: March 10, 1998
    Assignee: Minnesota Mining And Manufacturing Company
    Inventors: Heiner Johannsen, Richard W. Coates
  • Patent number: 5707730
    Abstract: An adhesive for bonding a reinforcing sheet to a lead-formed surface of a tape carrier package used for forming a semiconductor device, the adhesive being a resin composition which constitutes an interlayer between the lead-formed surface and the reinforcing sheet, comprises a polyamide resin having an amine value of 3.0 to 50 and an epoxy resin, is free from peeling and foaming, undergoes sufficient softening and curing at a temperature lower than about 150.degree. C., has high insulation reliability after cured, and has heat resistance against a temperature up to 260.degree. C.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: January 13, 1998
    Assignee: Tomoegawa Paper Co. Ltd.
    Inventors: Tadahiro Oishi, Akira Tezuka
  • Patent number: 5692937
    Abstract: Cold-seal adhesives are disclosed that contain no natural rubber and are able of forming dry content on stretchable fabric strips which adhere to one another with acceptable strength at room temperature by pressure contact to form cohesive surgical bandages, but also allow such strips to be reeled into rolls and stored for extended periods of time without blocking. Such cold-seal adhesives are aqueous dispersions having a Zahn Cup #2 viscosity between 16-40 seconds containing 30 to 50 percent solids content of a polyurethane ionomer reaction product of 50-80% polyester polyol, 15-25% aliphatic diisocyanate and 3-6% dimethylol propionic acid neutralized with a base selected from tertiary amines and alkali metal hydroxides and the reaction product possesses a T.sub.g of between about -20.degree. to 5.degree. C.
    Type: Grant
    Filed: January 8, 1997
    Date of Patent: December 2, 1997
    Assignee: Century International Adhesives and Coatings Corporation, Inc.
    Inventor: Tianhong Zhang
  • Patent number: 5681644
    Abstract: The ink transfer decal comprises a carrier sheet having a dimensionally stable base and a coating on the base defining an upper surface of the carrier sheet. The upper surface has a non-tacky, smooth matte finish at ambient temperature. A film of dried thermoplastic ink having at least one color, is printed directly on and adheres to the upper surface of the carrier sheet to form a reverse image graphic. A deposit of thermoplastic adhesive covers the ink, thereby constituting an ink decal for transferring the reverse image graphic to a substrate.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: October 28, 1997
    Assignee: Transfer Express, Inc.
    Inventor: Donald R. Dressler
  • Patent number: 5670260
    Abstract: A radiation-cured adhesive film having differential adhesion on opposing surfaces of the adhesive layer is provided. The film comprises a backing layer having coated thereon a radiation-cured adhesive copolymer layer, said copolymer comprised of one or more urethane oligomers A, optionally one or more B monomers, and a macromer C defined by the formula X--(Y).sub.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: September 23, 1997
    Assignee: Adhesives Research, Inc.
    Inventors: Michael J. Zajaczkowski, David A. Krupa, Barbara A. Stutzman
  • Patent number: 5650060
    Abstract: An ionically conductive agent having means for reducing passivation of metal subject to anodic dissolution is disclosed. The ionically conductive agent is interposed between metal to be protected from corrosion and metal to be sacrificed to provide cathodic protection. An electrical connection between the two metals completes a galvanic circuit. The means for reducing passivation can be either a complexing agent for ions of the metal to be sacrificed or can be a membrane to inhibit flow of ions that would affect the ability of the ionically conductive medium to support continued anodic metal dissolution. The ionically conductive agent and a system for cathodic protection using the ionically conductive agent is particularly suitable for a galvanic circuit to cathodically protect reinforcement bars in concrete structures such as transportation bridges, transportation highways, parking facilities, and balconies exposed to corrosive environments.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: July 22, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Haitao Huang, Richard B. Hartman, Timothy M. Dietz
  • Patent number: 5643648
    Abstract: A patch is provided for repairing articles such as bicycle tire inner tubes. The patch includes a backing; and a pressure sensitive adhesive layer having an average thickness of greater than about 0.076 mm disposed on the backing. The patch has a maximum thickness of no greater than about 0.64 mm, a T-Peel strength from an organic polymeric substrate of greater than about 0.18 kN/m after 1 hour dwell time at 22.degree. C., and a static shear strength of at least about 50 minutes from stainless steel at 70.degree. C. with a 7.6 kPa load.
    Type: Grant
    Filed: July 26, 1995
    Date of Patent: July 1, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James J. Kobe, Gene R. Ward
  • Patent number: 5616400
    Abstract: Cold-seal adhesives are disclosed that contain no natural rubber and are capable of forming dry coatings on flexible films which adhere to one another with commercially acceptable packaging strength at room temperature by pressure contact, but also allow such layered substrates to be reeled into rolls and stored for extended periods of time without blocking. The flexible films are usable in forming packages, particularly for comestibles and pharmaceuticals, without need for heat sealing. Such cold-seal adhesives are aqueous dispersions having a Zahn Cup #2 viscosity between 16-40 seconds containing 30 to 50 percent solids content of a polyurethane ionomer reaction product of 50-80% polyester polyol, 15-25% aliphatic diisocyanate and 3-6% dimethylol propionic acid neutralized with a base selected from tertiary amines and alkali metal hydroxides and the reaction product possesses a T.sub.g of between about -20.degree. to 5.degree. C.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: April 1, 1997
    Assignee: Century International Adhesives & Coating Corporation
    Inventor: Tianhong Zhang