Including Addition Polymer From Alpha-beta Unsaturated Carboxylic Acid (e.g., Acrylic Acid, Methacrylic Acid, Etc.) Or Derivative Thereof Patents (Class 428/355AC)
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Patent number: 6165610Abstract: Compared to a polyester film, films made from a blend of the polyester and up to 20 percent of an ethylene-acrylate copolymer have improved tear strength and heat seal strength while maintaining acceptable gloss, clarity, and coefficient of friction. The heat seal strength of the film and the bond strength of the film to aluminum vacuum deposited on the film are improved by adding less than five percent of an ethylene-acid copolymer to the blend.Type: GrantFiled: August 29, 1994Date of Patent: December 26, 2000Assignee: Printpack Illinois, Inc.Inventors: Neal E. Moore, Danilo O. De La Cruz
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Patent number: 6132844Abstract: An adhesive backed article, method for its manufacture and a kit including such an article are provided. The article of the invention is provided as an antislip product comprised of a backing and an oil resistant adhesive applied to a major surface of the backing. In one aspect of the invention, an article is provided comprising: a backing having a first and second major surfaces, the first major surface being textured to provide a slip resistant surface; and a pressure sensitive adhesive disposed on the second major surface of the backing, the adhesive formulated to be resistant to peel in use when exposed to oily environments, the adhesive comprising the polymerized reaction product of (a) acrylic acid; (b) at least one N-vinyl containing monomer; (c) at least one acrylate selected from the group consisting of isooctyl acrylate, 2-ethylhexyl acrylate, and combinations thereof; (d) optionally, less than about 20 weight % fluoroalkyl siloxane; and (e) optionally, a cross linking agent.Type: GrantFiled: December 11, 1997Date of Patent: October 17, 2000Assignee: 3M Innovative Properties CompanyInventors: Gordon L. Altshuler, Ramesh C. Kumar
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Patent number: 6127032Abstract: A multilayer film useful for making plastic adhesive labels for glass substrates such as glass bottles. The multilayer films contain a base layer, an adhesive layer, and optionally an intermediate layer to improve interlayer bonding between the base layer and the adhesive layer. The adhesive layer comprises a heat-activated thermoplastic adhesive that is not tacky at room temperature. Films of the present invention are sufficiently non blocking at room temperature so as to not require the use of a separate release liner. The film can be utilized in conventional graphics printing operations and made into labels. Labels made from films of the present invention can be thermally adhered to glass substrates and exhibit sufficient adhesion to glass substrates to withstand washing/rinsing, filling, and pasteurization processes utilized in the bottling industry.Type: GrantFiled: December 24, 1997Date of Patent: October 3, 2000Assignee: The Dow Chemical CompanyInventors: Robert H. Kelch, Harvey C. Tung
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Patent number: 6121508Abstract: A hydrophilic, pressure-sensitive adhesive composition prepared by irradiating solid poly(N-vinyl lactam) with ionizing radiation to crosslink the poly(N-vinyl lactam) and thereafter mixing the radiation-crosslinked poly(N-vinyl lactam) with essentially unirradiated plasticizer in an amount sufficient to form a cohesive, pressure-sensitive adhesive composition. The composition is useful as a biomedical adhesive for transmitting or receiving electrical signals as a component (14) of a biomedical electrode (10).Type: GrantFiled: June 23, 1998Date of Patent: September 19, 2000Assignee: 3M Innovative Properties CompanyInventors: Katharina J. Bischof, Wilhelm Kuester, Steven S. Kantner
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Patent number: 6117531Abstract: Pressure-sensitive double-sided self-adhesive tape for permanent irreversible bonds, characterized in that the self-adhesive tape has a backing film based on rubbers having double bonds in the main chain, the rubbers being crosslinked such that they exhibit elastomeric behaviour, and a pressure-sensitive self-adhesive composition, based on an acrylate, which is coated on both sides of the backing film.Type: GrantFiled: July 7, 1997Date of Patent: September 12, 2000Assignee: Beiersdorf AGInventors: Wolfgang Schacht, Robert Gereke, Frank Henke, Jochen Stahr
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Patent number: 6116774Abstract: A bonded body uses an adhesive having high water resistance to realize an adhesive-fixed structure having excellent waterproof properties and exhibiting relatively low changes in properties of the adhesive layer over time. The adhesive-fixed body of the present invention can be obtained by bonding and fixing a body and a glass cover as exterior pairs of a watch with an adhesive layer. The adhesive of the invention can be a curable adhesive containing 100 parts by weight of prepolymer resin having polytetramethylene oxide as a main chain and methacryl groups or acryl groups at both ends of the main chain or in side chains, 50 to 300 parts by weight of at least one selected from acrylic monomers or methacrylic monomers comprising isobornyl acrylate, isobornyl methacrylate or a mixture thereof, and a coupling agent.Type: GrantFiled: January 8, 1998Date of Patent: September 12, 2000Assignee: Seiko Epson CorporationInventors: Shigemi Sasaki, Tsutomu Saito
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Patent number: 6110574Abstract: The present invention provides a retroreflective sheeting comprising:a base retroreflective sheeting having a flat front face layer at the light-incident side, anda fluorine-contained resin film having a total light transmittance of at least 80%, laminated on the flat front face layer of the base retroreflective sheeting via an adhesive layer.This retroreflective sheeting is low in extent of freezing or snow sticking on the surface when used in cold districts, and shows excellent stain removability even for the stain made on the surface by mischief with a paint, an ink or the like.Type: GrantFiled: August 12, 1997Date of Patent: August 29, 2000Assignee: Nippin Carribe Kogyo Kabushiki KaishaInventors: Katsura Ochi, Osamu Tanaka, Masaki Yoshizawa
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Patent number: 6106940Abstract: The invention relates to adhesive compositions, preferably those for pressure-sensitive adhesive tapes, comprising an adhesive polymer and, as tackifier or plasticizer, a zwitterionic compound. The zwitterionic compounds include those of formula I ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are each alkyl, hydroxyalkyl, aminoalkyl or aryl which may be interrupted in the alkyl chain by one or more oxygen atoms, R.sup.4 is H or OH,Z.sup..theta. is CO.sub.2.sup..theta. or SO.sub.3.sup..theta.,x and y are each 0, 1 or 2 provided that the sum of x and y is less than or equal to 4.Type: GrantFiled: March 17, 1998Date of Patent: August 22, 2000Assignee: 3M Innovative Properties CompanyInventors: Kent E. Nielson, Kai Li, Terry J. Rayner
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Patent number: 6106941Abstract: A multi-component adhesive system for adhering polar surfaces to non-polar surfaces comprising: (a) a non-polar adhesive layer for bonding to a non-polar surface; and (b) polar adhesive layer bonded to said non-polar adhesive layer for bonding to a polar surface.Type: GrantFiled: July 29, 1998Date of Patent: August 22, 2000Assignee: Adco Products, Inc.Inventors: Dennis K. Fisher, James F. Wood, Stephen J. Eder
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Patent number: 6095996Abstract: An adhesive composition or structure is proposed for use in skin application, e.g. drug delivery wound care, or for attaching devices to collect body waste to the wearer. The composition comprises (a) a polymer or mixture of polymers which act as a pressure-sensitive adhesive present in an amount 20-60 parts by weight of the adhesive composition; and (b) a water-swellable polymer present in an amount 20-80 parts by weight of the adhesive composition. The polymer is one which will absorb from 50 to 500 grams of pure water per 100 grams of water-swellable polymer.Additionally there may be present up to 30 parts by weight (of the adhesive composition) of a water-soluble polymer.The water-swellable polymer may be provided as a coating on non-water-soluble and non-water-swellable fibers which limit swelling of the coating to be radial of the fibers. By arranging or aligning the fibers, the direction of swelling of the composition or structure can be controlled.Type: GrantFiled: May 28, 1998Date of Patent: August 1, 2000Assignee: Bristol-Myers Squibb CompanyInventors: Graham E. Steer, John A. Gent, Donald J. Highgate
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Patent number: 6086994Abstract: Heat-conductive and pressure-sensitive adhesive sheets which are excellent in heat resistance, scarcely undergo anchoring fracture between the base material and the adhesive layer and, therefore, are usable in fixing electronic parts to heat-radiating members or fixing members in various fields including constructive materials, vehicles, aircrafts and ships. the heat-conductive and pressure-sensitive adhesive sheets are in the form of sheets, tapes, etc. wherein a layer of a heat-conductive and pressure-sensitive adhesive composition, which contains an alkyl (meth)acrylate polymer having hydrophilic groups, is formed on the high frequency sputter-etched surface(s) of a plastic film containing 2 to 50% by volume of a heat-conductive, electrical insulating filler.Type: GrantFiled: April 16, 1998Date of Patent: July 11, 2000Assignee: Nitto Denko CorporationInventors: Masahiro Oura, Kazuyuki Kitakura, Shigeki Muta, Takao Yoshikawa
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Patent number: 6083616Abstract: An adhesive coating or layer has a differential height barrier structure deposited on the surface of one or both sides. Consequently, a highly aggressive adhesive formulation can be temporarily neutralized so as not to resist sliding of an item being positioned on the surface, until pressure is deliberately applied. Conversely, the adhesive system can be carried by decorative sheet material for easy application of the sheet material to cover a wall or floor, whereby the sheet can be slid into exact position without "sticking", before permanent adhesion. The present invention may be implemented by forming an array of discrete surface barrier structures which cover 10-30% of the active surface area of the adhesive. The barrier is preferably formed by an array of minute units of hard material or other discrete structures distributed on the adhesive surface and projecting therefrom by about 0.00025-0.0005 inch.Type: GrantFiled: September 19, 1997Date of Patent: July 4, 2000Assignee: Seal Products, Inc.Inventor: Donald R. Dressler
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Patent number: 6083856Abstract: The present invention provides fibers and products produced therefrom, including nonwoven webs and adhesive articles. The fibers, which can be multilayer fibers, include a pressure-sensitive adhesive composition comprising an acrylate copolymer comprising copolymerized monomers comprising at least one monofunctional alkyl (meth)acrylate monomer and at least one monofunctional free-radically copolymerizable reinforcing monomer having a homopolymer glass transition temperature higher than that of the alkyl (meth)acrylate monomer.Type: GrantFiled: December 1, 1997Date of Patent: July 4, 2000Assignee: 3M Innovative Properties CompanyInventors: Eugene G. Joseph, Ashish Khandpur, Kenneth C. Williams, Anthony R. Clanton, Steven C. Stickels, Randy A. Hoff
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Patent number: 6074729Abstract: A pressure-sensitive adhesive sheet 1A is for use by sticking onto a liquid crystal cell, and it has a construction wherein the pressure-sensitive adhesive layer 3 is joined to one side of the base material layer 2 which is constructed with a light-polarizing sheet and a release sheet 4 stuck onto the other side from the base material layer 2 of the pressure-sensitive adhesive layer 3. The pressure-sensitive adhesive layer 3 is constructed as a laminate with the layers 31 and 32. An acrylic-based pressure-sensitive adhesive, for example, can be used for the pressure-sensitive adhesives from which the layers 31 and 32 are constructed, but the shear elastic modulus or the relaxation elastic modulus of the layer 32 is set lower than that of the layer 31 as a result of a difference in the composition of the pressure-sensitive adhesive, the degree of crosslinking or the amount of plasticizer added in the layers 1 and 32.Type: GrantFiled: July 10, 1996Date of Patent: June 13, 2000Assignee: Lintec CorporationInventors: Shunpei Watanabe, Takashi Suzuki, Shuuichiro Ikeda
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Patent number: 6074719Abstract: 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: GrantFiled: January 29, 1997Date of Patent: June 13, 2000Assignee: 3M Innovative Properties CompanyInventors: Tatsuo Fukushi, Paul J. Wang
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Patent number: 6074745Abstract: A method of making sealing tape by (i) applying a thin coating of liquid adhesive onto one side of a moving thin film continuous web; (ii) contacting the liquid adhesive coating applied to the web with the surface of a rotating roller, the speed of the roller at the area of contact with the moving adhesive coating being different from the speed of the moving web, to effect roughening of the surface of the applied adhesive coating into a surface texture having a random pattern; and (iii) drying or curing the textured adhesive coating on the web to produce a dry coating of adhesive with a roughened surface texture having peaks and valleys. An economy sealing tape is also disclosed, being a plastic thin film substrate with a thin dry coating of a pressure-sensitive adhesive, the surface of the adhesive coating having a nonembossed, roughened surface texture with peaks and valleys and having a coating thickness of less than about 1 mil (0.Type: GrantFiled: February 14, 1997Date of Patent: June 13, 2000Inventor: Michael J. Speeney
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Patent number: 6066394Abstract: A plasticized polyvinylchloride (PVC) substrate coated with a plasticizer-resistant pressure-sensitive adhesive comprising a plasticized PVC substrate on which is deposited an adhesive acrylic PSA polymerized in the presence of a chain transfer agent, comprising about 50 to about 99.8% C.sub.1 -C.sub.12 alkyl acrylate monomer, 0 to about 40% vinyl unsaturated monomer, 0.1 to about 10% carboxylic acid functionalized monomer, 0 to about 10% hydroxyl functionalized monomer and about 0.1 to about 10% internal crosslinking monomer wherein the PSA has a glass transition temperature, T.sub.g, of less than -10.degree. C. and greater than about -45.degree. C. and wherein said substrate retains at least 40% peel adhesion and 50% shear strength after heat aging.Type: GrantFiled: April 9, 1997Date of Patent: May 23, 2000Assignee: Solutia Inc.Inventors: Susanne Marie Hoff, Leo Ternorutsky
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Patent number: 6060159Abstract: A thermomorphic pressure sensitive adhesive is provided. The adhesive includes a continuous crystalline polymer component and a discrete crosslinked elastomeric polymer component. The pressure sensitive adhesive has at least one distinct crystalline melting point and is capable of transitioning between a secondary shape and a primary shape upon an increase in temperature.Type: GrantFiled: February 22, 1999Date of Patent: May 9, 2000Inventors: Joaquin Delgado, Spencer F. Silver
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Patent number: 6054213Abstract: Acrylate copolymer pressure sensitive adhesives (PSAs) which incorporate relatively small amounts of a plasticizer are disclosed. The resulting PSAs exhibit improved low temperature performance and minimal effect on other properties, when used as adhesives for graphic marking films. The adhesive system has been found to allow the graphic marking film to be applied at temperatures as low as 20.degree. F. (-7.degree. C.) and to improve the ability of the film to be applied to a substrate without trapping air between the marking film and the substrate. The adhesive system of the marking film also demonstrates resistance to tenting around the compound curved surfaces of rivet heads and corrugations typical of truck trailer sides.Type: GrantFiled: July 13, 1998Date of Patent: April 25, 2000Assignee: 3M Innovative Properties CompanyInventors: Kenneth Peacock, Albert I. Everaerts, Kenneth D. Wilson, Stephen J. Galick
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Patent number: 6048611Abstract: The present invention relates to a water-based high-solids moisture-resistant latex pressure sensitive adhesive which has a low coating viscosity and which has high shear, high compliance, and controlled adhesion buildup.Type: GrantFiled: February 3, 1992Date of Patent: April 11, 2000Assignee: 3M Innovative Properties CompanyInventors: Ying-Yuh Lu, Michael D. Crandall, Robert D. Koppes
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Patent number: 6048806Abstract: An adhesive tape is provided which comprises a woven cloth, a polymer embedded into the cloth so as to cause the warp and weft fibers of the cloth to bond together at their overlapping points but not to completely encase the fibers, and a pressure sensitive adhesive coated onto at least a portion of the polymer, wherein the adhesive tape is hand tearable in the down-web and in the cross-web direction. A method of manufacturing such a tape is also provided.Type: GrantFiled: October 16, 1997Date of Patent: April 11, 2000Assignee: 3M Innovative Properties CompanyInventors: Gerald S. Deeb, Dennis L. Krueger, Robert H. Menzies, Herbert W. Morris, Patrick D. Hyde, Felix P. Lau, Eumi Pyun, Pamela S. Tucker, Roy Wong
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Patent number: 6042882Abstract: An adhesive tape is provided which comprises a woven cloth, a polymer embedded into the cloth so as to cause the warp and weft fibers of the cloth to bond together at their overlapping points but not to completely encase the fibers, and a pressure sensitive adhesive coated onto at least a portion of the polymer, wherein the adhesive tape is hand tearable in the down-web and in the cross-web direction. A method of manufacturing such a tape is also provided.Type: GrantFiled: October 16, 1997Date of Patent: March 28, 2000Assignee: 3M Innovative Properties CompanyInventors: Gerald S. Deeb, Dennis L. Krueger, Robert H. Menzies, Herbert W. Morris, Patrick D. Hyde, Felix P. Lau, Eumi Pyum, Pamela S. Tucker, Roy Wong
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Patent number: 6040048Abstract: An energy beam curable hydrophilic pressure sensitive adhesive composition comprising a hydrophilic pressure sensitive adhesive (A) and an energy beam polymerizable compound (B), optionally together with a photopolymerization initiator (C) added according to necessity. Thus, a pressure sensitive adhesive composition suitable for use in a wafer surface protective sheet is provided, which enables easy removal of any residual pressure sensitive adhesive by washing with water, even if the pressure sensitive adhesive remains on the wafer surface after peeling of the pressure sensitive adhesive sheet.Type: GrantFiled: August 27, 1998Date of Patent: March 21, 2000Assignee: Lintec CorporationInventors: Kiichiro Kato, Takeshi Kondoh, Katsuhisa Taguchi, Kazuhiro Takahashi
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Patent number: 6030701Abstract: The invention provides a method for imparting topographical or protective features to a substrate by contacting a sheet material comprising a thermosettable layer with a substrate and heating the sheet material to an elevated temperature.Type: GrantFiled: September 20, 1996Date of Patent: February 29, 2000Assignee: 3M Innovative Properties CompanyInventors: Michael A. Johnson, Clayton A. George, Peggy S. Willett, Scott R. Meyer
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Patent number: 6030674Abstract: A cleaning sheet comprises a sheet-shaped base and an adhesive layer formed on at least one surface of the sheet-shaped base member. The adhesive layer has an adhesive strength in the range of 0.1-0.5 gf 125 mm according to a 180-degree peel-off method provided by JIS Z-0237. Or the adhesive layer has a tackiness degree in the range of 1-5 according to a J DOW method provided by JIS Z-0237.Type: GrantFiled: March 8, 1996Date of Patent: February 29, 2000Assignee: Seiko Epson CorporationInventors: Hiroyuki Onishi, Akio Owatari, Junichi Iida
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Patent number: 6017624Abstract: Unsupported pressure sensitive adhesive (PSA) films of tacky, polymeric microspheres are provided. The opposite major surfaces of the film provide different levels of peel adhesion, allowing for removability without substrate damage. In addition, the PSA films provide high shear strength and good tensile properties.Type: GrantFiled: October 30, 1997Date of Patent: January 25, 2000Assignee: 3M Innovative Properties CompanyInventors: Joaquin Delgado, Spencer F. Silver
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Patent number: 6004670Abstract: 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: GrantFiled: January 29, 1997Date of Patent: December 21, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: James J. Kobe, Maurice E. Freeman, Bradley D. Zinke, Shih-Lai Lu, Jason A. Chesley, Eric V. Malmberg, Robert G. Shaw
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Patent number: 5998018Abstract: A coat masking tape base material and a coat masking tape, having superior follow-up properties, promising sharp paint lines and being free of "left-on" when peeled, in which a polyolefin resin film having a modulus of elasticity of from 15 to 55 kgf/mm.sup.2 has been subjected to modification treatment on its both sides, and a pressure-sensitive adhesive layer maintaining a thermoplastic saturated block copolymer, a thermoplastic unsaturated block copolymer and a tackifier or a cross-linked acrylic pressure-sensitive adhesive layer is formed on the film having been subjected to modification treatment.Type: GrantFiled: April 6, 1998Date of Patent: December 7, 1999Assignee: Sony Chemicals Corp.Inventors: Masao Murakami, Kiichiron Haraguchi
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Patent number: 5993961Abstract: A multilayer adhesive construction and method for production of said construction are provided. The construction comprises a facestock, a barrier layer on the facestock, and an adhesive layer on the barrier layer. The barrier layer comprises a pressure-sensitive adhesive which inhibits the migration of mobile species such as oils, resins, tackifiers, or plasticizers from the adhesive layer into the facestock or from the facestock into the adhesive layer. This migration of mobile ingredients often manifests itself as swelling or hardening of the facestock which, in turn, leads to wrinkling of the adhesive construction and general loss of adhesion. The multilayer adhesive construction of the invention thus improves adhesion and the appearance of the label by inhibiting wrinkling and/or staining.Type: GrantFiled: June 7, 1995Date of Patent: November 30, 1999Assignee: Avery Dennison CorporationInventors: Ronald Ugolick, T. Liem Ang, Luigi Sartor
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Patent number: 5993960Abstract: 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: GrantFiled: October 31, 1997Date of Patent: November 30, 1999Assignee: New Oji Paper Co., Ltd.Inventors: Yasufumi Nakayama, Masahiro Kamiya, Shinichi Nagasaki, Yoshihide Kawano, Toshifumi Fujii
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Patent number: 5985775Abstract: An adhesive tape is provided which comprises a woven cloth, a polymer embedded into the cloth so as to cause the warp and weft fibers of the cloth to bond together at their overlapping points but not to completely encase the fibers, and a pressure sensitive adhesive coated onto at least a portion of the polymer, wherein the adhesive tape is hand tearable in the down-web and in the cross-web direction. A method of manufacturing such a tape is also provided.Type: GrantFiled: October 16, 1997Date of Patent: November 16, 1999Assignee: 3M Innovative Properties CompanyInventors: Gerald S. Deeb, Dennis L. Krueger, Robert H. Menzies, Herbert W. Morris, Patrick D. Hyde, Felix P. Lau, Eumi Pyum, Pamela S. Tucker, Roy Wong
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Patent number: 5981047Abstract: A coextruded biaxially oriented polyolefin packaging film has a cold seal release layer, a core layer, and a cold seal receptive skin layer. The release layer is made of (A) about 10% to about 60% by weight ethylene-butylene random copolymer containing between 0% and about 6.0% by weight ethylene and between about 94% and 100% by weight butylene; (B) a blend of two polymers selected from the group consisting of polyethylene ionomers, syndiotactic homopolymer polypropylene, conventional polyethylenes having densities of between 0.91 and 0.965 gm/cm.sup.3, and metallocene-catalyzed polyethylene plastomers; and optionally (C) a non-migratory slip agent present in an amount sufficient to decrease the coefficient of friction of the release layer. Alternatively, the release layer may be made of a two-component blend of the ethylene-butylene random copolymer and high density polyethylene.Type: GrantFiled: June 25, 1996Date of Patent: November 9, 1999Assignee: Applied Extrusion Technologies, Inc.Inventor: Andrew F. Wilkie
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Patent number: 5976690Abstract: A process for making an adhesive comprising allowing a carrier web coated with a thermal free-radically polymerizable mixture to remain in a heat exchange medium for a time sufficient to subdue the reaction exotherm and maintain a reaction temperature by thermal contact of the polymerizable mixture with the heat exchange medium and to affect conversion of the coating to an adhesive layer, preferably to a pressure sensitive adhesive layer, wherein the coating is a substantially solvent-free thermally initiated polymerizable mixture comprised of at least one free radical monomer, at least one thermal initiator, optionally, at least one cross-linker and optionally, at least one co-monomer.Type: GrantFiled: February 9, 1998Date of Patent: November 2, 1999Assignee: 3M Innovative Properties CompanyInventors: Jerry W. Williams, Gary T. Boyd, Jeanne M. Goetzke, Gerald L. Uhl, David A. Ylitalo
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Patent number: 5965255Abstract: The present invention provides a pressure-sensitive adhesive sheet for surface protection which has been laminated the following three layers of:(A) a layer which contains 60-100% by weight of an elastomer, containing 100-50% by weight of a hydrogenated random copolymer consisting of 1-50% by weight of styrene and 99-50% by weight of a diene hydrocarbon and 0-50% by weight of a low-molecular-weight elastomer, and 40-0% by weight of a polyolefin;(B) a layer which contains 3-95% by weight of a hydrogenated random copolymer consisting of 1-50% by weight of styrene and 99-50% by weight of a diene hydrocarbon and 97-5% by weight of a polyolefin; and(C) a layer which has at least one layer of a polyolefin,which has good adhesion to an object to be adhered, which can be easily removed (peeled off) from an object to be adhered after exposure to carbon arc, which has also good adhesion between the respective layers and which neither stains the surface to which the adhesive sheet is adhered nor leaves any adhesion markType: GrantFiled: September 3, 1998Date of Patent: October 12, 1999Assignee: Nichiban Company LimitedInventors: Syuji Ichimura, Yoshinaga Tsuzuki, Kinnosuke Hino
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Patent number: 5958580Abstract: A masking tape or sheet comprising a substrate comprising a resin (a) comprising a polypropylene as a hard segment and an olefin copolymer as a soft segment, and an adhesive layer formed on one side of said substrate. The masking tape of the present invention can precisely follow the shape of adhesion surfaces having curves, and can provide fine parting lines. In particular, when polypropylene resin (b) is added to the resin (a), the back face of the masking tape becomes smooth and can be adhered easily with fingers, and the tape can be easily cut with a cutter knife. Hence, the use of the masking tape of the present invention leads to an improved efficiency of adhesion work, particularly when the work is manually done. In addition, since the masking tape of the present invention does not contain vinyl chloride in the substrate, the masking tape after use can be incinerated without generating a toxic gas such as chlorine gas.Type: GrantFiled: March 6, 1997Date of Patent: September 28, 1999Assignee: Nitto Denko CorporationInventors: Naoki Kohno, Kazuhisa Maeda, Michiro Kawanishi, Kazuhito Okumura
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Patent number: 5935711Abstract: A composition comprises organoborane amine complex and aziridine-functional material. The composition can form a part of a polymerization initiator system that also includes a compound that is reactive with the amine portion of the complex. The system can be used to initiate polymerization of acrylic monomer and to form an acrylic adhesive that has exceptionally good adhesion to low surface energy polymers.Type: GrantFiled: October 23, 1996Date of Patent: August 10, 1999Assignee: 3M Innovative Properties CompanyInventors: Alphonsus V. Pocius, E. John Deviny
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Patent number: 5932325Abstract: A thermal transfer recording material for imparting metallic luster, comprising: a substrate; and at least a layer having metallic luster and optionally an adhesive layer provided in that order on one surface of the substrate, an ink-receptive layer being provided between the layer having metallic luster and the substrate.Type: GrantFiled: June 13, 1996Date of Patent: August 3, 1999Assignee: Dai Nippon Printing Co., Ltd.Inventors: Shunichi Ebihara, Keiji Hirose
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Patent number: 5928782Abstract: A hot melt useful for packaging, comprising from about 10% to about 30% by weight of at least one copolymer of ethylene and methyl acrylate (both acrylates and methacrylates); from about 10% to about 20% by weight of at least one copolymer of ethylene and n-butyl acrylate (both acrylates and methacrylates), wherein the total polymer content does not exceed 40% by weight, and the total ethylene n-butyl acrylate copolymer content does not exceed the total ethylene methyl acrylate copolymer content by percent weight in the adhesive; from about 20% to about 60% by weight of at least one tackifying resin selected from the group consisting of rosins and modified rosins and hydrogenated derivatives; aliphatic, cycloaliphatic and aromatic hydrocarbon resins and modified hydrocarbon resins and hydrogenated derivatives; terpenes and modified terpenes and hydrogenated derivatives; and mixtures thereof; from about 5% to about 30% by weight of at least one wax; and up to about 2% by weight of an antioxidant; wherein the rType: GrantFiled: November 15, 1996Date of Patent: July 27, 1999Assignee: H.B. Fuller Licensing & Financing, Inc.Inventor: Steven W. Albrecht
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Patent number: 5928783Abstract: The invention relates to a pressure sensitive adhesive prepared from an aqueous emulsion polymer. The polymer is prepared by reacting at least one ethylenically unsaturated monomer and from about 0.1 to about 5 weight percent, based on the total weight of ethylenically unsaturated monomer, of a water-soluble or water-dispersible polymerizable surfactant having a terminal allyl amine moiety. The pressure sensitive adhesives may be used in all types of tapes, labels, decals, packaging, electrical insulation, and surgical bandaging.Type: GrantFiled: March 9, 1998Date of Patent: July 27, 1999Assignee: National Starch and Chemical Investment Holding CorporationInventors: Lien Phan, Rajeev Farwaha, Patrick J. Hayes
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Patent number: 5919563Abstract: The present invention provides a conformable tape for bonding a lens block comprising a thermoplastic lens blocking composition to an ophthalmic lens blank. Preferred tapes have a pressure sensitive adhesive layer and a polymer backing that comprises a polar moiety and a non-polar moiety. Preferred thermoplastic lens blocking compositions comprise a homopolymer or copolymer of epsilon-caprolactone, have a number average molecular weight between 3,000 and 100,000, and a polydispersity less than 10. The composition may also comprise one or more modifiers, fillers or heat absorbing materials.Type: GrantFiled: September 13, 1996Date of Patent: July 6, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: William L. Parish, Jr., Philip G. Martin, Patrick D. Hyde
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Patent number: 5914174Abstract: A resin is provided comprising a mixture of at least two polymerizable components, at least one photochromic additive, at least one additive and at least one polymerization initiator. The mixture of at least two polymerizable components is preferably selected from monofunctional, difunctional and multifunctional acrylates and methacrylates. The photochromic additive is preferably selected from spirooxazine additives and spiropyran additives. And the additive is preferably selected from antioxidants, radical scavengers and ultraviolet absorbers.Type: GrantFiled: December 5, 1996Date of Patent: June 22, 1999Assignee: Innotech, Inc.Inventors: Amitava Gupta, Ronald D. Blum, William Kokonaski, Venkatramani S. Iyer
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Patent number: 5908693Abstract: We have discovered a low trauma wound dressing including a moisture-vapor permeable backing and a contiguous particulate adhesive layer comprised of tacky, substantially solvent-insoluble, solvent-dispersible, acrylate-based, elastomeric, pressure-sensitive adhesive microspheres.Type: GrantFiled: December 4, 1996Date of Patent: June 1, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Joaquin Delgado, Richard J. Goetz, Spencer F. Silver, Donald H. Lucast
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Patent number: 5904976Abstract: A polymeric film having a translucent first layer of polymeric material, a transparent second layer of polymeric material on at least one surface of the first layer, and an adherent layer comprising an acrylic resin on the surface of the second layer remote from the first layer is disclosed. Both the first and second layers are preferably formed of biaxially oriented polyethylene terephthalate. The first layer contains an inorganic filler opacifying agent. The polymeric film is particularly suitable for use as an upper sheet in a re-usable label employing the "magic slate" principle.Type: GrantFiled: April 30, 1996Date of Patent: May 18, 1999Assignee: Imperial Chemical Industries PLCInventors: Michael Richard Berry, Paul David Lawrence, Gary Victor Rhoades
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Patent number: 5891500Abstract: Package comprising a polymer blend of ionomer and polybutylene in which at least one seam is made up of the blend being sealed to itself.Type: GrantFiled: October 11, 1996Date of Patent: April 6, 1999Assignee: E. I. du Pont de Nemours and CompanyInventor: Vincent Brodie, III
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Patent number: 5891566Abstract: An adhesive tape for electronic parts, comprising(a) a heat resistant base film, and(b) an adhesive layer laminated on at least one surface of said base film, said adhesive layer comprising(i) a resol type phenol resin, and(ii) an acrylonitrile/butadiene copolymer,in a proportion of from 100 to 500 parts by weight of said resol type phenol resin per 100 parts by weight of said acrylonitrile/butadiene copolymer,said resol type phenol resin being selected from the group consisting of bisphenol A type resins, alkylphenol type resins, phenol type resins and their co-condensed type phenol resins which contain as the phenol component at least one member selected from the group consisting of bisphenol A, alkylphenols and phenol.Type: GrantFiled: February 26, 1997Date of Patent: April 6, 1999Assignee: Tomoegawa Paper Co., Ltd.Inventors: Yukinori Sakumoto, Shigeyuki Yokoyama, Akihiro Shibuya, Atsushi Koshimura
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Patent number: 5888650Abstract: A temperature-responsive adhesive article comprises (a) a temperature-responsive carrier capable of changing its shape at a first transition temperature; and (b) a thermomorphic pressure-sensitive adhesive on at least a portion of at least one surface of the carrier, the thermomorphic pressure-sensitive adhesive being capable of changing its shape at a second transition temperature. By varying the initial shapes or topographies of carrier and adhesive and the relationship between the transition temperatures, the article of the invention can be designed to provide a wide variety of bonding and de-bonding properties.Type: GrantFiled: June 3, 1996Date of Patent: March 30, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Clyde D. Calhoun, Joaquin Delgado
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Patent number: 5885708Abstract: A latex antistatic adhesive comprising an emulsion of polymerized microdrops dispersed in an aqueous medium, having an average diameter less than about 0.1 .mu.m, and a glass transition temperature (Tg) of from about -120.degree. C. to about 25.degree. C., wherein the polymerized microdrops are derived from emulsion microdrops of reactive monomers, said adhesive including at least one (meth)acrylic monomer, at least one polar monomer, at least one reactive oligomer and at least 1% of a lithium salt.Type: GrantFiled: February 14, 1997Date of Patent: March 23, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Ying-Yuh Lu, Steven D. Yau
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Patent number: 5882775Abstract: An automobile paint film-protective sheet comprising a substrate having formed on one side thereof a rubber-based pressure-sensitive adhesive having a dynamic modulus of from 2.times.10.sup.5 to 7.times.10.sup.6 dyne/cm.sup.2 at 60.degree. C.Type: GrantFiled: August 1, 1997Date of Patent: March 16, 1999Assignees: Kansai Paint Co., Ltd., Nitto Denko CorporationInventors: Komaharu Matsui, Mitrso Wakimoto, Takeshi Eda, Tadayoshi Tatsuno, Yutaka Kuwabara, Kenichi Shibata
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Patent number: 5876855Abstract: The invention provides a pressure-sensitive adhesive composition for medical applications comprising a blend of at least two components comprised of about 5 to about 95% by weight of a first component comprised of at least one acrylic pressure-sensitive adhesive and about 5 to about 95% by weight of a second component comprised of either (a) at least one elastomer with a tackifying resin, or (b) at least one thermoplastic elastomer, wherein the resulting pressure-sensitive adhesive demonstrates a T.sub.0 of at least 1 N/dm and a T.sub.48 of less than 12 N/dm when adhered to skin. The pressure-sensitive adhesive composition is prepared either in the presence of a solvent or is alternatively prepared by melt blending. A method of preparing such an adhesive is also disclosed.Type: GrantFiled: December 22, 1995Date of Patent: March 2, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Roy Wong, Dennis L. Krueger, Patrick D. Hyde, Felix P. Lau, Eumi Pyun, Pamela S. Tucker
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Patent number: 5861211Abstract: Articles comprising a substrate, preferably a retroreflective sheeting, having a coating of a pressure-sensitive adhesive composition, and articles wherein the adhesive adheres the substrate to a highly monomericly plasticized PVC component, preferably a PVC coated fabric. The adhesive comprises a crosslinked copolymer of a first monofunctional acrylate ester of a non-tertiary alcohol having as a homopolymer a glass transition temperature of less than -25.degree. C., a nitrogen containing moderately basic monomer copolymerizable therewith selected from the group consisting of N,N-dialkyl substituted amides, an optional copolymerizable acidic monomer, an optional second monofunctional acrylate ester of a non-tertiary alcohol having as a homopolymer a glass transition temperature -25.degree. C. or greater, and a crosslinking agent. A method of bonding a highly monomericly plasticized PVC component to a substrate, preferably a retroreflective sheeting, using the adhesive.Type: GrantFiled: August 12, 1996Date of Patent: January 19, 1999Assignee: Minnesota Mining & Manufacturing CompanyInventors: Bimal V. Thakkar, Albert I. Everaerts