Including Irradiated Or Wave Energy Treated Component Patents (Class 428/345)
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Publication number: 20110064946Abstract: [Problem] To provide an adhesive sheet for protecting coating films which is excellent in the adhesion between a coating layer and a composite film, and has weather resistance. [Means for solving] The adhesive sheet for protecting coating films is one comprising a base layer and an adhesive layer, and the base layer has a coating layer produced by using the fluoroethylene vinyl ether alternating copolymer having a specific structure on one surface of a composite film containing an acrylic polymer and a urethane polymer. It is preferable that the coating layer is cross-linked with a composite film and has cross-linked points.Type: ApplicationFiled: May 14, 2009Publication date: March 17, 2011Applicant: Nitto Denko CorporationInventors: Makoto Kai, Kenichi Shibata, Mitsuyoshi Shirai, Masanori Uesugi, Hidenori Suzuki
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Publication number: 20110045287Abstract: Disclosed is a sealing resin sheet for allowing a resin layer in a softened state to adhere to and seal a material to be sealed, wherein the resin layer comprises an adhesive resin.Type: ApplicationFiled: March 27, 2009Publication date: February 24, 2011Inventors: Masahiko Kawashima, Masaaki Kanao, Yutaka Matsuki, Daisuke Masaki, Toshihiro Koyano
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Publication number: 20110008597Abstract: A surface protective sheet comprises an adhesive layer having a plurality of layers on one side of a base film, the adhesive layer having a 25° C. storage elastic modulus of 10 to 100 MPa, and an adhesive strength with respect to a silicon mirror wafer of 1.0 N/20 mm or less at peeling off the surface protective sheet. The surface protective sheet is used for a semiconductor wafer having a protruding electrode of 10 to 150 ?m height on its surface.Type: ApplicationFiled: July 12, 2010Publication date: January 13, 2011Applicant: NITTO DENKO CORPORATIONInventors: Fumiteru ASAI, Takatoshi SASAKI, Noriyoshi KAWASHIMA
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Publication number: 20110003135Abstract: The present invention relates to an ultraviolet-curable pressure-sensitive adhesive composition including (a) a monomer component containing 70 to 99 wt % of an alkyl (meth)acrylate with the carbon number in the alkyl group being 1 to 20 and 1 to 30 wt % of a polar group-containing vinyl monomer, (b) at least one polyfunctional (meth)acrylate having four or more (meth)acryloyl groups within one molecule and having an acryl equivalent of 150 or less, in an amount of 0.01 to 0.1 parts by mol based on 100 parts by mol of the monomer component, and (c) a photopolymerization initiator; an ultraviolet-curable pressure-sensitive adhesive sheet using the same; and a process for producing the same.Type: ApplicationFiled: September 3, 2007Publication date: January 6, 2011Applicant: NITTO DENKO CORPORATIONInventors: Akira Hirao, Kunio Nagasaki, Yuuta Shimazaki
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Publication number: 20100330860Abstract: A multiple-ply fluid-absorbing hygiene item for use in a garment, the item comprising an outer layer; said outer layer comprising a layer of a UV-crosslinking pressure-sensitive adhesive; the pressure-sensitive adhesive being crosslinked from a liquid pressure-sensitive adhesive precursor by UV radiation; the pressure-sensitive adhesive precursor having, at a temperature of at most 80° C., a viscosity below 5000 mPas.Type: ApplicationFiled: September 2, 2010Publication date: December 30, 2010Inventors: Eckhard Puerkner, Achim Schmitt, Heinrich Träger, Holger Toenniessen
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Publication number: 20100323192Abstract: A base member including a bonding film comprises a substrate; and the bonding film provided on the substrate. The base member is capable of bonding to an opposite substrate (object) through the bonding film. Such a bonding film contains a Si-skeleton constituted of constituent atoms containing silicon atoms and elimination groups bonded to the silicon atoms of the Si-skeleton. The Si-skeleton includes siloxane (Si—O) bonds. The constituent atoms are bonded to each other. Further, the bonding film is formed by a plasma polymerization. Furthermore, in a case where energy is applied to at least a part region of the surface of the bonding film, the elimination groups existing on the surface and in the vicinity of the surface within the region are removed from the silicon atoms of the Si-skeleton so that the region develops a bonding property with respect to the opposite substrate.Type: ApplicationFiled: July 2, 2008Publication date: December 23, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Yasuhide Matsuo, Kenji Otsuka, Kazuo Higuchi, Kosuke Wakamatsu
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Publication number: 20100297439Abstract: A photosensitive adhesive resin composition includes (A) a compound having a hydroxyl group or a carboxyl group, and a (meth)acryloyl group, (B) a resin which cures with the compound (A) by thermal treatment, (C) a compound having a (meth)acryloyl group and not having a hydroxyl group and a carboxyl group, (D) a phenol resin or a phenol compound, and (E) a photoactive compound. The photosensitive adhesive resin composition has excellent developability, and is used for producing a spacer formed between a transparent substrate and a substrate on which a semiconductor element is formed. An adhesive film and a light-receiving device are produced using the photosensitive adhesive resin composition.Type: ApplicationFiled: May 27, 2008Publication date: November 25, 2010Applicant: SUMITOMO BAKELITE CO., LTD.Inventors: Rie Takayama, Toyosei Takahashi
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Patent number: 7838110Abstract: A photoactive compound that is the Michael addition reaction product of an aziridine compound and a photoinitiator-functional (meth)acrylate is described. The compound can be used to crosslink (meth)acrylic polymers via a hydrogen abstracting or an alpha-cleavage mechanism.Type: GrantFiled: December 2, 2008Date of Patent: November 23, 2010Assignee: 3M Innovative Properties CompanyInventors: Peiwang Zhu, Maureen A. Kavanagh, Kelly S. Anderson, Larry R. Krepski, Guy D. Joly, Belma Erdogan, Babu N. Gaddam
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Patent number: 7829606Abstract: High durable polarized film comprising a radiation curable PSA layer for lamination in TFT/LCD applications have high humidity and heat resistance. In one embodiment, the adhesive comprises a UV curable acrylic polymer, a compatible tackifier, a multifunction unsaturated oligomer, and a long chain alkyl acrylate monomer.Type: GrantFiled: May 7, 2009Date of Patent: November 9, 2010Assignee: Henkel AG & Co. KGaAInventors: Ming Chang Lu, Peter D. Palasz
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Publication number: 20100279491Abstract: The present invention provides a die attach film-provided dicing tape, which includes a dicing tape, a supporting tape and a die attach film laminated in this order, wherein the supporting tape is a tape having a self-rolling peelability, and a process for producing a semiconductor device by using the die attach film-provided dicing tape.Type: ApplicationFiled: April 29, 2010Publication date: November 4, 2010Applicant: NITTO DENKO CORPORATIONInventors: Kazuyuki KIUCHI, Akinori NISHIO
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Patent number: 7811647Abstract: Disclosed is a heat-peelable pressure-sensitive adhesive sheet that can prevent the deformation of a pressure-sensitive adhesive layer due to pressurization in a pressing process and can be easily peeled off from the processed article. The heat-peelable pressure-sensitive adhesive sheet includes a substrate, and a heat-expandable pressure-sensitive adhesive layer arranged on or above at least one side of the substrate and containing a foaming agent, in which the heat-expandable pressure-sensitive adhesive layer has a shear modulus (23° C.) in an unfoamed state of 7×106 Pa or more. The heat-expandable pressure-sensitive adhesive layer preferably has a shear modulus (95° C.) in an unfoamed state of less than 7×106 Pa. The foaming agent in the heat-expandable pressure-sensitive adhesive layer preferably has a foam initiating temperature higher than 80° C.Type: GrantFiled: February 18, 2005Date of Patent: October 12, 2010Assignee: Nitto Denko CorporationInventors: Yukio Arimitsu, Akihisa Murata, Tomoko Kishimoto
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Publication number: 20100247906Abstract: The present invention relates to a heat-resistant adhesive sheet (tape). More particularly, the invention relates to a heat-resistant adhesive sheet of high reliability and workability, in which crosslink reaction can be induced through irradiation of energy rays on an adhesive layer to achieve heat resistance at high temperature and also high dimension stability in parts, to achieve release without leaving any adhesive residues on an attached surface in releasing the layer and also to achieve no oxidation on the attached surface, e.g., a metallic surface at a high temperature.Type: ApplicationFiled: August 22, 2007Publication date: September 30, 2010Applicant: TORAY SAEHAN INC.Inventors: Jun-Ho Lee, Hae-Sang Jeun, Ki-Jeong Moon, Chang-Hoon Sim
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Publication number: 20100227128Abstract: The invention relates to an edge trim for pieces of furniture, comprising a molten film. In order to improve a generic edge trim such that the same is more versatile and can especially be mounted on a wider selection of surfaces, the molecular structure of the molten film contains both polar and non-polar parts.Type: ApplicationFiled: June 6, 2008Publication date: September 9, 2010Inventors: Uwe Krämer, Peter Glaser
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Patent number: 7790258Abstract: Self-adhesive, flexible sealing tapes, comprising at least one flexible, self-adhesive core or at least one flexible, self-abhesive carrier layer provided with an envelope or two-sided coating consisting of a second adhesive system.Type: GrantFiled: December 16, 2004Date of Patent: September 7, 2010Assignee: Lohmann GmbH & Co. KGInventors: Walter Blum, Dirk Wester, Volker Wiegmann
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Publication number: 20100215947Abstract: Disclosed is a heat-expandable/peelable acrylic pressure-sensitive adhesive tape or sheet which maintains a high adhesion force but the bonded part can be easily separated/debonded regardless of whether the surface of the adherend is uneven. The heat-expandable/peelable acrylic pressure-sensitive adhesive tape or sheet includes a viscoelastic body containing both bubbles and microparticles, and on at least one side thereof, a pressure-sensitive adhesive layer containing a blowing agent. The heat-expandable/peelable acrylic pressure-sensitive adhesive tape or sheet preferably contains bubbles in an amount of 3 to 30 percent by volume based on the total volume of the viscoelastic body.Type: ApplicationFiled: October 14, 2008Publication date: August 26, 2010Applicant: NITTO DENKO CORPORATIONInventors: Eiji Yamanaka, Kunio Nagasaki, Akira Hirao, Tooru Nakashima
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Publication number: 20100178475Abstract: Provided is a multifunctional plastic sheet that can be used not only as a writing board but also as a screen, and a manufacturing method thereof. The multifunctional plastic sheet includes a multifunctional plastic sheet, which includes a first plastic film coated with acrylate resin or treated with corona discharge; a bead-including UV coating layer formed on an upper side of the first plastic film; a second plastic film laminated with a bottom side of the first plastic film; and a permanent or removable adhesive layer formed at a bottom side of the second plastic film.Type: ApplicationFiled: January 3, 2008Publication date: July 15, 2010Applicant: INPA CO., LTD.Inventor: Kyu-Ha Son
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Patent number: 7754327Abstract: An article comprising an adhesive attachment region is provided. The adhesive attachment region comprises a radiation curable hot melt pressure sensitive adhesive.Type: GrantFiled: May 11, 2006Date of Patent: July 13, 2010Assignee: Henkel AG & Co. KGaAInventor: Wei Kong
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Publication number: 20100163173Abstract: Disclosed herein is a heat bonding film, which includes a hot-melt adhesive film and a protective layer disposed on the hot-melt adhesive film. The hot-melt adhesive film exhibits an adhesive property after being heated. While an outer surface of the protective layer is heated, the heat bonding film may be attached onto an object through the adhesive property provided by the hot-melt adhesive film.Type: ApplicationFiled: December 24, 2009Publication date: July 1, 2010Inventor: Ju-Chen CHIU
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Patent number: 7727811Abstract: The present invention relates to a pressure-sensitive adhesive sheet for processing a semiconductor wafer or semiconductor substrate, which includes a base material and a pressure-sensitive adhesive layer which is polymerizable and curable by an energy ray, the pressure-sensitive adhesive layer being disposed on a surface of the base material, in which the pressure-sensitive adhesive layer includes a base polymer, a multifunctional acrylate-based oligomer which has an energy-ray polymerizable carbon-carbon double bond and has a molecular weight of 1000 to 2500, and a multifunctional acrylate-based compound which has an energy-ray polymerizable carbon-carbon double bond and has a molecular weight of 200 to 700. The pressure-sensitive adhesive sheet of the invention is excellent in follow-up properties to a minute unevenness with a depth of about 0.Type: GrantFiled: May 11, 2007Date of Patent: June 1, 2010Assignee: Nitto Denko CorporationInventors: Toshio Shintani, Fumiteru Asai
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Publication number: 20100112346Abstract: Provided is an acrylic pressure-sensitive adhesive tape or sheet highly adhesive to hard-to-adhere adherends such as coatings having the surface control agent bleeding thereon. The acrylic pressure-sensitive adhesive tape or sheet, according to the present invention, having a viscoelastic layer (X) containing microspheres and an acrylic polymer containing an alkyl (meth)acrylate as the principal monomer component as the base polymer and a pressure-sensitive adhesive layer (Y) formed at least on one side of the viscoelastic layer (X) by irradiation of an acrylic monomer mixture or a prepolymer of the acrylic monomer mixture with active energy ray, wherein the amount of acrylic acid in the acrylic monomer mixture for the pressure-sensitive adhesive layer (Y) or a prepolymer of the acrylic monomer mixture is 6 to 12 wt % with respect to all monomer components and the amount of n-butyl acrylate is 35 to 65 wt % with respect to the total amount of 2-ethylhexyl acrylate and n-butyl acrylate.Type: ApplicationFiled: February 28, 2008Publication date: May 6, 2010Applicant: NITTO DENKO CORPORATIONInventors: Takashi Kondou, Mitsuyoshi Shirai, Masanori Uesugi, Masayuki Okamoto, Kazuhisa Maeda
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Publication number: 20100092772Abstract: The pressure sensitive adhesive sheet of the present invention is characterized by a pressure sensitive adhesive sheet in which a pressure sensitive adhesive layer is formed on at least one surface of a base material and in which a surface of the above pressure sensitive adhesive layer at a side opposite to the base material is brought into contact with a release agent layer, wherein the pressure sensitive adhesive layer and the release agent layer do not substantially contain a silicone-based compound, and the pressure sensitive adhesive layer contains an antioxidant. It has a good releasing performance from the release agent layer and is excellent in a releasing stability after ageing.Type: ApplicationFiled: January 8, 2008Publication date: April 15, 2010Applicant: LINTEC CORPORATIONInventors: Takuo Nishida, Akihito Yamada, Sou Miyata, Takuya Tetsumoto
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Publication number: 20100092735Abstract: The present invention provides a masking media for heat activated graphics. The masking media includes a film having a first release surface, an opposite. treated surface, and a two-part adhesive applied to the treated surface. The adhesive is adapted to secure graphics to the film to enable the graphics to be hot-pressed onto a fabric substrate. The adhesive includes acrylic and isocyanate in a ratio of isocyanate to acrylic of at least about 1.1%. The media can be wound upon itself with the adhesive contacting the release surface and subsequently being unwound with the adhesive releasing from the release surface.Type: ApplicationFiled: October 14, 2008Publication date: April 15, 2010Inventors: Witold S. Perlinski, Philip J. Iwinski
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Publication number: 20100080989Abstract: The present invention provides a pressure-sensitive adhesive sheet for laser processing, which includes a base and a pressure-sensitive adhesive layer provided on one surface of the base, the pressure-sensitive adhesive layer having an absorption coefficient at a wavelength of 355 nm of from 50 cm?1 to 900 cm?1, the pressure-sensitive adhesive layer containing a light-absorbing agent in which an absorbance of the light-absorbing agent in a 0.01% by weight acetonitrile solution at a wavelength of 355 nm is from 0.01 to 1.20, and in which the pressure-sensitive adhesive sheet is to be used at the time when a workpiece is laser-processed by a laser light having a wavelength of an ultraviolet region or a laser light enabling light absorption via multiphoton absorption process.Type: ApplicationFiled: October 1, 2009Publication date: April 1, 2010Applicant: NITTO DENKO CORPORATIONInventors: Fumiteru ASAI, Tomokazu TAKAHASHI, Keiko MAEKAWA, Kazuhiro AOYAGI
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Patent number: 7687119Abstract: A radiation-curable desiccant-filled adhesive/sealant composition comprising a radiation-curable resin, one or more desiccant fillers, one or more photoinitiators or photosensitizers, and optionally, one or more inorganic or organic fillers.Type: GrantFiled: April 4, 2005Date of Patent: March 30, 2010Assignee: Henkel AG & Co. KGaAInventors: Jie Cao, Donald E. Herr
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Patent number: 7666498Abstract: A method of making a composite roofing material and the resulting material by depositing nail tabs made of a thermoplastic, thermosetting, adhesive or elastomer material, in a liquid state, onto the base substrate of the composite roofing material or onto the saturated or coated roofing material, or onto a transfer surface to be pressed or laminated onto the roofing material. A preferred embodiment transfers the nail tabs onto an engraved transfer impression roll and uses a pressurized applicator to inject the viscous tab material into engraved patterns depressed in raised areas of the impression roll., then deposits the material onto the roofing material. A preferred embodiment also includes the thermoplastic or thermosetting material in a liquid or viscous state hardened or cured by either its exposure to the air or by the use of ultra-violet or visible light.Type: GrantFiled: June 27, 2006Date of Patent: February 23, 2010Inventors: David Allan Collins, George William Jackson, Miguel E. Madero O'Brien
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Publication number: 20100028669Abstract: A re-releasable adhesive agent comprises a radiation-reactive polymer and a radiation polymerization initiator, the radiation-reactive polymer has a side chain derived from at least one monomer expressed by the formula (1): CH2?CR1COOR2 (1), where R1 is a hydrogen atom or a methyl group, and R2 is a C6 or higher alkyl group, and a side chain having one carbon-carbon double bond, and the monomer of formula (1) is contained in a ratio of less than 50 mol % with respect to the total monomer constituting the main chain of the radiation-reactive polymer.Type: ApplicationFiled: July 27, 2009Publication date: February 4, 2010Applicant: NITTO DENKO CORPORATIONInventors: Takashi HABU, Tomokazu Takahashi, Fumiteru Asai, Takamasa Hirayama
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Publication number: 20100021730Abstract: Disclosed is an acrylic pressure-sensitive adhesive tape or sheet that exhibits satisfactory adhesion to hard-to-adhere adherends. The acrylic pressure-sensitive adhesive tape or sheet includes a microsphere-containing viscoelastic layer (X); and a pressure-sensitive adhesive layer (Y) arranged on at least one side of the viscoelastic layer (X). The pressure-sensitive adhesive layer (Y) is derived from an acrylic pressure-sensitive adhesive composition through the application of an active energy ray, and the acrylic pressure-sensitive adhesive composition contains (a) a vinyl monomer mixture mainly containing an alkyl(meth)acrylate (a1) whose alkyl moiety has 2 to 14 carbon atoms, or a partial polymer of the vinyl monomer mixture; (b) a photoinitiator; and (c) an alkylphenol tackifier. The acrylic pressure-sensitive adhesive composition preferably contains 0.001 to 5 parts by weight of the photoinitiator (b) and 0.Type: ApplicationFiled: October 10, 2007Publication date: January 28, 2010Applicant: NITTO DENKO CORPORATIONInventors: Takashi Kondou, Mitsuyoshi Shirai, Masanori Uesugi, Masayuki Okamoto, Kazuhisa Maeda, Tetsuya Hirose, Shinji Inokuchi
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Publication number: 20100015379Abstract: A near infrared light shielding film which comprise a hard coat layer which is formed by using a material for forming a hard coat layer comprising an agent for absorbing near infrared light and a compound curable with active energy ray and is disposed on one face of a substrate film and a pressure sensitive adhesive layer which is disposed on the other face of the substrate film, wherein the compound curable with active energy ray comprises a polyfunctional acrylate-based monomer having a functionality of five or greater as the main component. The film exhibits excellent near infrared light shielding property and transmission of visible light, excellent scratch resistance and weatherability and, moreover, excellent workability in lamination to glass having a curved surface since curling of the film is suppressed and is advantageously used for attaching to window panes of buildings and windshield glasses of automobiles and, in particular, to windshield glasses of automobiles.Type: ApplicationFiled: February 19, 2008Publication date: January 21, 2010Inventor: Takashi Matsushita
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Publication number: 20100003513Abstract: An adhesive bonding sheet having an optically transmitting supporting substrate and an adhesive bonding layer, and being used in both a dicing step and a semiconductor element adhesion step, wherein the adhesive bonding layer comprises: a polymer component (A) having a weight average molecular weight of 100,000 or more including functional groups; an epoxy resin (B); a phenolic epoxy resin curing agent (C); a photoreactive monomer (D), wherein the Tg of the cured material obtained by ultraviolet light irradiation is 250° C. or more; and a photoinitiator (E) which generates a base and a radical by irradiation with ultraviolet light of wavelength 200-450 nm.Type: ApplicationFiled: August 3, 2009Publication date: January 7, 2010Inventors: Keisuke OOKUBO, Teiichi INADA
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Publication number: 20100003512Abstract: An adhesive bonding sheet having an optically transmitting supporting substrate and an adhesive bonding layer, and being used in both a dicing step and a semiconductor element adhesion step, wherein the adhesive bonding layer comprises: a polymer component (A) having a weight average molecular weight of 100,000 or more including functional groups; an epoxy resin (B); a phenolic epoxy resin curing agent (C); a photoreactive monomer (D), wherein the Tg of the cured material obtained by ultraviolet light irradiation is 250° C. or more; and a photoinitiator (E) which generates a base and a radical by irradiation with ultraviolet light of wavelength 200-450 nm.Type: ApplicationFiled: August 3, 2009Publication date: January 7, 2010Inventors: Keisuke Ookubo, Teiichi Inada
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Patent number: 7641966Abstract: A curable re-release adhesive which, when subjected to a curing reaction caused by irradiation with radiation, shows a sufficient drop of adhesion and causes the adherend to be warped to a minimized extent as developed by the shrinkage force caused by the curing reaction. The re-release adhesive contains a radiation-reactive polymer including a main chain and a plurality of intramolecular side chains, each such side chain having a terminal carbon-carbon double bond, a chain length of 6 or more in terms of number of atoms, and the same or a different number of atoms as each other side chain in the polymer. The release adhesive shows a shrinkage force of 30 MPa or less as developed by a curing reaction upon irradiation. A re-release adhesive sheet is also disclosed, including a substrate film and an adhesive layer containing the re-release adhesive, provided on one surface thereof.Type: GrantFiled: December 13, 2001Date of Patent: January 5, 2010Assignee: Nitto Denko CorporationInventors: Kouichi Hashimoto, Takahiro Fukuoka, Koji Akazawa, Yoshio Nakagawa, Tatsuya Kubozono
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Publication number: 20090250166Abstract: A sealant article useful for sealing a substrate surface having a first surface and a second surface is provided. The first surface comprises a deformable composition that is capable of conforming to a substrate surface when subjected to heat and/or pressure. The second surface of the sealant article has been at least partially cured by exposing said surface to an amount of radiation effective to induce at least partial curing of the second surface of the sealant article. Prior to such curing, the second surface also is comprised of the deformable composition. Such at least partial curing is effective to render the second surface less deformable than the first surface.Type: ApplicationFiled: April 6, 2009Publication date: October 8, 2009Applicant: Henkel AG & Co. KGaAInventors: Jeffrey T. Pachl, Don K. Howard, Grady C. Rorie, Gregory A. Ferguson
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Patent number: 7578891Abstract: An adhesive bonding sheet having an optically transmitting supporting substrate and an adhesive bonding layer, and being used in both a dicing step and a semiconductor element adhesion step, wherein the adhesive bonding layer comprises: a polymer component (A) having a weight average molecular weight of 100,000 or more including functional groups; an epoxy resin (B); a phenolic epoxy resin curing agent (C); a photoreactive monomer (D), wherein the Tg of the cured material obtained by ultraviolet light irradiation is 250° C. or more; and a photoinitiator (E) which generates a base and a radical by irradiation with ultraviolet light of wavelength 200-450 nm.Type: GrantFiled: May 17, 2005Date of Patent: August 25, 2009Assignee: Hitachi Chemical Company, Ltd.Inventors: Keisuke Ookubo, Teiichi Inada
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Patent number: 7556861Abstract: High frequency-weldable articles, such as sheets or yarns, include at least one high frequency-weldable part that is made from a modified polyethylene terephthalate (PET) material and that has a melting point ranging from 100° C. to 250° C. The modified PET material is prepared from a composition that includes terephthalic acid, ethylene glycol and a diol modifier. The diol modifier is selected from the group consisting of neopentanediol, 1,3-dihydroxy-2-methylpropane, 1,3-dihydroxy-2-methylpropane alkoxylate, 2,5-dimethyl-2,5-hexanediol, polyethylene glycol, and combinations thereof.Type: GrantFiled: October 22, 2004Date of Patent: July 7, 2009Assignee: Far Eastern Textile Ltd.Inventors: Ru-Yu Wu, Tsung-Hui Chao, Chih-Wei Chu
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Publication number: 20090116111Abstract: A pressure-sensitive adhesive optical film of the present invention comprises an optical film; and a pressure-sensitive adhesive layer laminated on at least one side of the optical film, wherein the pressure-sensitive adhesive layer is formed from an acrylic pressure-sensitive adhesive comprising a (meth)acrylic polymer comprising 30 to 99.99% by weight of an alkyl (meth)acrylate monomer unit and 0.01 to 15% by weight of a functional group-containing monomer unit, and the (meth)acrylic polymer in the acrylic pressure-sensitive adhesive is crosslinked by electron beam irradiation. The pressure-sensitive adhesive optical film has a high level of reworkability, durability and workability.Type: ApplicationFiled: October 31, 2008Publication date: May 7, 2009Applicant: NITTO DENKO CORPORATIONInventors: Yuusuke TOYAMA, Shinichi INOUE, Mizue NAGATA, Toshitsugu HOSOKAWA
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Publication number: 20090110924Abstract: A pressure-sensitive adhesive for an optical film of the present invention comprises a (meth)acrylic polymer comprising 50 to 99.99% by weight of alkyl (meth)acrylate monomer unit and 0.01 to 30% by weight of a photocrosslinkable monomer unit having an unsaturated double bond-containing polymerizable functional group and a photocrosslinkable moiety different from the functional group. A pressure-sensitive adhesive layer is formed from the pressure-sensitive adhesive on at least one side of an optical film, wherein the photocrosslinkable moiety of the (meth)acrylic polymer in the pressure-sensitive adhesive is crosslinked by active energy ray irradiation. The pressure-sensitive adhesive can form the pressure-sensitive adhesive layer with a high level of durability and preferable workability.Type: ApplicationFiled: October 29, 2008Publication date: April 30, 2009Applicant: NITTO DENKO CORPORATIONInventors: Shinichi INOUE, Yuusuke TOYAMA, Mizue NAGATA, Toshitsugu HOSOKAWA
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Publication number: 20090092819Abstract: A pressure sensitive adhesive includes a substantially continuous polymer phase having pressure sensitive adhesive properties, and a plurality of pores arranged within the substantially continuous polymer phase and disposed to permit fluid to pass from a first side through at least a portion of the plurality of pores to a second side. The plurality of pores is substantially resistant to cold flow. A method of forming a porous pressure sensitive adhesive tape includes providing a solution for forming an adhesive having pressure sensitive adhesive properties, the solution including a pore forming material, casting a film comprising the solution, laminating a liner on the film, and exposing the adhesive to an energy source to form pores in the adhesive and cure the adhesive to form the pressure sensitive adhesive tape.Type: ApplicationFiled: October 8, 2008Publication date: April 9, 2009Applicant: ADHESIVES RESEARCH, INC.Inventors: Ranjit MALIK, Kevin J. MCKINNEY
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Patent number: 7510764Abstract: A pressure-sensitive adhesive composition comprising polymers and/or copolymers based at least predominantly on (meth)acrylic acid and/or derivatives thereof, wherein said composition possesses an outgassing level of not more than 50 ?g/g in total, preferably less than 10 ?g/g, when said composition is measured by the tesa method.Type: GrantFiled: February 15, 2002Date of Patent: March 31, 2009Assignee: tesa AGInventors: Marc Husemann, Stephan Zöllner, Heiko Thiede, Reinhard Storbeck
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Patent number: 7495035Abstract: It is an object of the present invention to provide a photo-curable resin composition which provides a sealing agent for a flat panel display with good moisture permeation resistance and excellent adhesion. The present inventors have conducted extensive studies to solve the above-described problems, and as a result, they have found a photo-curable resin composition which comprises a cationic photopolymerization initiator (A), a cationically polymerizable compound (B), a cyclic polyether compound (C) and another organic compound (D), wherein the amount of (B) is 1.0 to 99.9% by mass and the amount of (C) is 0.0 to 10.0% by mass, both based on the sum of (B), (C) and (D), and the sum (F) of the fluorine atoms in a fluorine-containing organic compound is 0.0 to 40.0% by mass, based on the sum of (B), (C) and (D), and wherein at least 1/1000 mass ratio of the (B) component is a compound containing an oxetanyl group, and both of the contents of (C) and (F) are not 0.0% by mass at the same time.Type: GrantFiled: August 10, 2004Date of Patent: February 24, 2009Assignee: Mitsui Chemicals, Inc.Inventors: Yugo Yamamoto, Yasushi Mizuta, Yuichi Ito
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Publication number: 20090022986Abstract: The present invention relates to an adhesive security tape and to a method for its production. The adhesive security tape comprises first and second substrate layers that are connected to each other by means of a second adhesive layer and which can be attached by means of a first adhesive layer to an adhesive surface. The first substrate layer 2 has severing lines that completely penetrate at least part of the first substrate layer along the severing lines. The severing lines are preferably created with a laser beam, and the profile of the severing lines is designed so that the severing lines constitute an identifier.Type: ApplicationFiled: July 9, 2008Publication date: January 22, 2009Inventors: Ulrich Wesselmann, Thomas Mangols, Ulf Feistel
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Publication number: 20090022967Abstract: In order to enable lamination of materials of different kinds, such as a synthetic resin plate and a glass plate, without leaving bubbles between the materials, a double sided adhesive sheet (1) is formed by forming an adhesive layer (3) cross-linked with ultraviolet light on one surface of a sheet (2) with an inorganic oxide layer (2B) and forming an adhesive layer (4) cross-linked by heating or moisture on the other surface of the sheet (2). A glass plate (6) is applied to the adhesive layer (3), and a synthetic resin plate (7) is applied to the adhesive layer (4), thereby forming a laminate panel (5).Type: ApplicationFiled: April 12, 2006Publication date: January 22, 2009Applicant: MITSUBISHI PLASTICS, INC.Inventor: Makoto Inenaga
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Publication number: 20080317979Abstract: The laser-transmissive welding label of the present invention is a resin label which comprises at least a resin layer and is affixable to a resin shaped article by a laser welding, wherein the resin layer has a light-scattering property, and the transmittance of the resin layer relative to a laser beam having an oscillation wavelength within the range of 740 to 1100 nm is not less than 20%, and the total light transmittance of the resin layer relative to a visible light (in accordance with ASTM D1003) is not more than 50%. The resin layer may comprise a thermoplastic resin which may have a compatibility with a resin for the resin shaped article. The label may be able to mask the resin shaped article, or may be colored with a coloring agent. A shaped composite article (e.g., a toner cartridge) may be formed by bonding the label to the resin shaped article with use of the laser welding.Type: ApplicationFiled: July 21, 2005Publication date: December 25, 2008Inventors: Masahiko Itakura, Yasuo Okumura, Yuichi Ooe, Yoshiteru Hatase
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Publication number: 20080311388Abstract: The object of the invention is to provide a pressure-sensitive adhesive sheet for identification, which is obtained by easy thick film coating in formation of a pressure-sensitive adhesive agent layer; which can be used even if the surface of a collection subject is wet with moisture; which is obtained without using an organic solvent in production steps; and which causes few damages on the surface of the collection subject, and a production method thereof.Type: ApplicationFiled: June 11, 2008Publication date: December 18, 2008Inventors: Masanori Uesugi, Eiji Yamanaka
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Patent number: 7462651Abstract: A radiation-curable desiccant-filled adhesive/sealant composition comprising a radiation-curable resin, one or more desiccant fillers, one or more photoinitiators or photosensitizers, and optionally, one or more inorganic or organic fillers.Type: GrantFiled: March 30, 2006Date of Patent: December 9, 2008Assignee: National Starch and Chemical Investment Holding CorporationInventors: Jie Cao, Donald E. Herr
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Publication number: 20080279911Abstract: According to an aspect of the invention, medical devices are provided which contain at least one polymeric region. The polymeric region contains at least one copolymer, which includes at least one high Tg vinyl aromatic monomer and at least one low Tg monomer. Moreover, the polymeric region contains at least one surface sub-region that is crosslinked and at least one bulk sub-region that is substantially non-crosslinked. According to another aspect of the invention, a method is provided which includes exposing a polymeric region of a medical device to energetic species such that at least one surface sub-region of the polymeric region becomes crosslinked and at least one bulk sub-region remains substantially non-crosslinked. The polymeric region contains at least one copolymer, which includes at least one high Tg vinyl aromatic monomer and at least one low Tg monomer.Type: ApplicationFiled: May 11, 2007Publication date: November 13, 2008Inventors: Derek Sutermeister, Jay Rassat
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Publication number: 20080261038Abstract: An adhesive sheet for processing semiconductor substrates comprises a UV rays- and/or radiation-transmittable base film and an adhesive layer that undergoes a polymerization curing reaction by means of UV rays and/or radiation, wherein the adhesive layer is formed using a multifunctional acrylate oligomer and/or monomer having a double bond, and is blended so as to result in 1 double bond per total average molecular weight of 225 to 8000 as determined on the basis of the weight average molecular weight of the multifunctional acrylate oligomer and/or monomer.Type: ApplicationFiled: January 3, 2008Publication date: October 23, 2008Applicant: Nitto Denko CorporationInventors: Akiyoshi Yamamoto, Toshio Shintani, Fumiteru Asai, Kouichi Hashimoto
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Publication number: 20080248296Abstract: The present invention relates to a pressure-sensitive adhesive sheet for processing, which includes a substrate; a pressure-sensitive adhesive layer containing a radiation-polymerizable compound; and an interlayer containing an acrylic polymer having a glass transition temperature of 20° C. or higher as a main component, the interlayer being disposed between the substrate and the pressure-sensitive adhesive layer. The pressure-sensitive adhesive sheet of the invention is excellent in pressure-sensitive adhesive properties, releasability, and expansibility.Type: ApplicationFiled: August 22, 2007Publication date: October 9, 2008Applicant: NITTO DENKO CORPORATIONInventors: Toshio SHINTANI, Fumiteru ASAI, Kazuhiko YAMAMOTO
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Publication number: 20080233392Abstract: An adhesive sheet includes a substrate and an energy-ray curable adhesive layer formed on the substrate. The energy-ray curable adhesive layer includes an energy-ray curable acrylic copolymer and an energy-ray curable urethane acrylate. The energy-ray curable acrylic copolymer is formed by copolymerizing dialkyl(meth)acrylamide and includes a side chain with an unsaturated group. The energy-ray curable urethane acrylate includes an isocyanate block and a (meth)acryloyl group. The isocyanate block includes at least one of an isophorone diisocyanate, a trimethyl-hexamethyene diisocyanate, and a tetramethyl-xylene diisocyanate.Type: ApplicationFiled: March 19, 2008Publication date: September 25, 2008Applicant: LINTEC CorporationInventors: Keiko Tanaka, Jun Maeda, Masaharu Ito
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Publication number: 20080220251Abstract: A pressure-sensitive adhesive tape or film obtained by curing a UV-curable pressure-sensitive adhesive composition containing a UV-curable polymer or oligomer, wherein the UV curing is controlled to give a higher degree of cure to one surface of the pressure-sensitive adhesive tape or film than that on the opposite surface and thereby the pressure-sensitive adhesive property is suppressed on the one surface and maintained on the opposite surface.Type: ApplicationFiled: April 18, 2006Publication date: September 11, 2008Inventor: Shunsuke Takaki
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Publication number: 20080160300Abstract: A composition, including a polymer binder resin A, a UV-curing acrylate B, a heat curing agent C, and a photopolymerization initiator D. The composition includes about 20 to about 150 parts by weight of the UV-curing acrylate B per 100 parts by weight of the polymer binder resin A, and the UV-curing acrylate B is a solid or near-solid at room temperature and has a viscosity of about 10,000 cps or more at 40° C.Type: ApplicationFiled: December 27, 2007Publication date: July 3, 2008Inventors: Yong Ha Hwang, Gyu Seok Song, Hee Yeon Ki, Kyoung Jin Ha, Jae Hyun Cho, Jun Suk Kim, Chang Beom Chung