公开(公告)号：JPH11172208A

公开(公告)日：1999-06-29

申请号：JP34612497

申请日：1997-12-16

Applicant: NITTO DENKO CORP

Inventor： OJI KATSUYA ,  KITAMURA YOSHINAO ,  YOSHIKAWA TAKAO

IPC: C09J7/02 ,  C09J133/00 ,  C09J133/06 ,  C09J133/24

Abstract: PROBLEM TO BE SOLVED: To obtain pressure-sensitive adhesive sheets showing high adhesiveness to inorganic materials such as glass and tiles and particularly excellent in resistance to moist heat. SOLUTION: This pressure-sensitive adhesive sheet is constituted by providing a layer composed of an acrylic pressure-sensitive adhesive having, as the major component, a copolymer of (a) 60-94 wt.% acrylic monomer represented by the general formula: CH2 =C(R )COOR (wherein R is H or methyl; and R is 4-14C alkyl), (b) 5-40 wt.% (meth)acrylamide represented by the general formula: CH2 =C(R )CONR R (wherein R3 is H or methyl; R H or alkyl; and R5 is alkyl or an organic group constituting a heterocyclic ring with N atom by linking with R ), and (c) 1-10 wt.% acidic group-containing monomer on a foamed substrate having a water absorption of less than 15 wt.% after the immersion in hot water of 40 deg.C for 24 hours.

公开(公告)号：JPH10292163A

公开(公告)日：1998-11-04

申请号：JP9988597

申请日：1997-04-17

Applicant: NITTO DENKO CORP

Inventor： HOSOKAWA KAZUTO ,  MUTA SHIGEKI ,  TAKAHIRA HITOSHI ,  YOSHIKAWA TAKAO

IPC: C09J7/02 ,  C09J133/06 ,  C09J163/00

Abstract: PROBLEM TO BE SOLVED: To obtain a pressure-sensitive adhesive that has stickiness at room temperature and can manifest excellent processability and heat resistance by using an acrylic pressure-sensitive adhesive as a base and setting the storage elasticity before curing within a specified range by controlling the degree of crosslinking. SOLUTION: This adhesive is prepared by crosslinking a (meth)acrylic alkyl ester polymer, adjusting its glass transition point to be -10 dyn/cm in the temperature range from 50 to 100 deg.C before curing, further giving curing properties to adjust the storage elasticity to be >=10 dyn/cm at 100-300 deg.C after curing. The curing properties are given preferably by formulating an epoxy resin as a curing component and the amount of the epoxy resin is 5-30 pts.wt. per 100 pts.wt. of the (meth)acrylic alkyl ester polymer. A base material is coated with this adhesive to form the adhesive layers on one or both sides of the base material thereby giving the objective adhesive sheets.

公开(公告)号：JPH10133590A

公开(公告)日：1998-05-22

申请号：JP30377996

申请日：1996-10-28

Applicant: NITTO DENKO CORP

Inventor： TAKAHIRA HITOSHI ,  OURA MASAHIRO ,  MUTA SHIGEKI ,  YOSHIKAWA TAKAO

IPC: G09F9/00

Abstract: PROBLEM TO BE SOLVED: To efficiently suppress a rise in the temperature of a display plate and prevent a failure, and to make a cooling air discharge fan small-sized and lightweight or eliminate the need for it by adhering and fixing a transparent protection plate to the view side of a light emission display plate across spacers formed of heat-conductive adhesive layers. SOLUTION: On the view side of the light emission display plate 3, the transparent protection plate 1 is adhered and fixed across the spacers 2 formed of heat-conductive adhesive layers. On the view back side or flank side of the light emission display plate 3, heat radiation plates 5 and 8 are adhered and fixed across heat-conductive adhesive layers 4 and 7. The light emission display plate 3 uses a plasma type or a light emission diode type which attains the purpose of display with self-emitted light. For the heat-conductive adhesive layers forming the spacers 2, an adhesive material based upon rubber, acryl, etc., is used. The transparent protection plate 1 is formed of a transparent material such as transparent resin and glass and radiates heat transmitted through the spacers 2 to the outside. The plates 5 and 8 radiate heat accumulated in the light emission display plate 3 to suppress a rise in the temperature in the device.

公开(公告)号：JPH09259770A

公开(公告)日：1997-10-03

申请号：JP9309696

申请日：1996-03-21

Applicant: NITTO DENKO CORP

Inventor： KISHIOKA HIROAKI ,  TAKAHIRA HITOSHI ,  YOSHIKAWA TAKAO

IPC: H01J11/44 ,  H01J17/16 ,  H01J11/02

Abstract: PROBLEM TO BE SOLVED: To attain high visibility, and advantageously cope even with an enlargement of a display plate by arranging a transparent protective plate in close contact on the visible side of a plasma display plate through a heat resistant transparent resin sheet. SOLUTION: A shock absorbing, adhesive and heat resistant material is used as a transparent resin sheet 2. Shock absorbing performance aims to protect a plasma display plate 3 from impact or the like at falling time. Adhesion attains close contact arrangement of a transparent protective plate 1 and a plasma display plate 3, and prevents mixing of an air layer over a long period of time, and aims to secure excellent visibility over a long period of time. Heat resistance aims to endure heating by the plasma display plate 3 or the like.

公开(公告)号：JPH08327975A

公开(公告)日：1996-12-13

申请号：JP15854795

申请日：1995-06-01

Applicant: NITTO DENKO CORP

Inventor： TAKAHIRA HITOSHI ,  OKADA HIDEYUKI ,  OURA MASAHIRO ,  YOSHIKAWA TAKAO

IPC: G02F1/133 ,  G02F1/1333 ,  G09G3/36

Abstract: PURPOSE: To obtain a liquid crystal display device with which the exchange of a tablet plate by peeling is easy, long-term adhesiveness is excellent, the degradation in transparency and visibility by the occurrence of air bubbles is prevented over a long period of time, the light reflection loss at the boundary is less, the visibility is excellent and input with hand writing is possible in a system of not interposing an air layer between a liquid crystal display panel and the tablet plate. CONSTITUTION: The liquid crystal display device which has the easy peelability of the tablet plate and allows input by hand writing is constituted by arranging the tablet plate 1 in tight contact with the viewing side of the liquid crystal display panel 3 via a transparent resin sheet 2 having a buffer characteristic and weak adhesiveness. Thereby, the liquid crystal display panel 3 and the tablet plate 1 are brought into tight contact with each other stably over a long period of time via the transparent resin sheet 2 having the buffer characteristic and weak adhesiveness.

公开(公告)号：JPH05117593A

公开(公告)日：1993-05-14

申请号：JP31323591

申请日：1991-10-31

Applicant: NITTO DENKO CORP

Inventor： YOSHIKAWA TAKAO ,  MORIYAMA TAKAAKI

IPC: C09J7/02 ,  C08F2/50 ,  C08F220/18 ,  C09J4/02 ,  C09J4/06 ,  C09J133/06

Abstract: PURPOSE:To obtain the subject adhesive resistant to the soldering bath flow test by irradiating a composition containing a mixture of an alkyl (meth)acrylate and a comonomer, a cross-linking agent and a photo-polymerization initiator with ultraviolet irradiation and heating and drying the product to remove the unreacted component. CONSTITUTION:The objective pressure-sensitive adhesive having excellent heat- resistance is produced by irradiating a composition containing (A) 100 pts.wt. of a monomer mixture consisting of 70-100wt.% of a (meth)acrylic acid 2-14C alkyl ester (e.g. isononyl acrylate) and 30-0wt.% of a monoethylenic unsaturated monomer copolymerizable with the acrylate (e.g. acrylic acid), (B) 0.02-5 pts.wt. of a polyfunctional (meth)acrylate (e.g. trimethylolpropane triacrylate) as a cross-linking agent and (C) 0,01-4 pts.wt. of a photo-polymerization initiator (e.g. 2,2-dimethoxy-2-phenylacetophenone) with ultraviolet irradiation to obtain a photo-polymerized product having a solvent-insoluble content of >=60wt.% and heating and drying the product to decrease the unreacted monomer content to

公开(公告)号：JPH0339521B2

公开(公告)日：1991-06-14

申请号：JP10649885

申请日：1985-05-17

Applicant: NITTO DENKO CORP

Inventor： YOSHIKAWA TAKAO ,  SUGII TETSUJI ,  SAKAI ISOJI

IPC: C08F265/00 ,  C08F2/18 ,  C08F2/20 ,  C08F2/22 ,  C08F2/24 ,  C08F2/44 ,  C08F20/10 ,  C08F265/06 ,  C09J151/00

公开(公告)号：JPH02245083A

公开(公告)日：1990-09-28

申请号：JP6694689

申请日：1989-03-17

Applicant: NITTO DENKO CORP

Inventor： YOSHIKAWA TAKAO ,  MOROISHI YUTAKA

IPC: C09J7/02 ,  C09J133/04 ,  C09J133/06 ,  H05K13/02

Abstract: PURPOSE:To obtain the title adhesive improved in temporary fixing ability at room temperature and creep resistance by using as effective constituent a copolymer having a specified glass transition point, obtained from an alkyl acrylate monomer and a vinyl monomer copolymerizable therewith. CONSTITUTION:50-95 pts.wt. 2-14C alkyl acrylate monomer (e.g. isononyl acrylate) is copolymerized with 50-5 pts.wt. vinyl monomer copolymerizable therewith (e.g. acrylic acid) to give an acrylic copolymer having a glass transition point of -33 to 27 deg.C and an apparent modulus of electricity at ordinary temperature of at least 5kg/cm . 100 pts.wt. said copolymer is mixed, if necessary, with a tackifier resin (e.g. terpene-modified phenolic resin) having a melting point of 200 deg.C or lower, preferably 20-200 deg.C, to give the title adhesive. A layer of this adhesive is provided on a supporting base material to give an adhesive member.

公开(公告)号：JP2009102647A

公开(公告)日：2009-05-14

申请号：JP2008318587

申请日：2008-12-15

Applicant: Nitto Denko Corp ,  日東電工株式会社

Inventor： TAKAHIRA HITOSHI ,  OURA MASAHIRO ,  YOSHIKAWA TAKAO ,  KISHIOKA HIROAKI

IPC: C09J7/02 ,  C09J4/00 ,  C09J4/02

Abstract: PROBLEM TO BE SOLVED: To provide a pressure sensitive adhesive sheet excellent in transparency, anti-gassification, low outgassing performance and color fastness (heat resistance, weatherability).
SOLUTION: The pressure sensitive adhesive comprises a photopolymerization product obtained from a composition comprising (a) a 100 pts.wt. monomer which contains a 2-14C alkyl (meth)acrylate of 70-100 wt.% and a 30-0 wt.% monoethylenic unsaturated monomer copolymerizable with the (meth)acrylate, (b) a radical chain inhibitor of 0.1-5 pts.wt., (c) a multifunctional (meth)acrylate of 0.02-5 pts.wt. as a crosslinking agent, (d) a photopolymerization initiator of 0.005-1 pts.wt. and (e) a silane coupling agent of 0.01-10 pts.wt. The pressure sensitive adhesive sheet has a layer of a pressure sensitive adhesive exhibiting a ≤1% haze value and a ≥90% total light transmittance, the layer being formed on a mold release treatment film produced from a plastic film of a thickness of 25-125 μm.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供透明性，防气体化，低脱气性能和耐色牢度（耐热性，耐候性）优异的压敏粘合片。 解决方案：压敏粘合剂包含由包含（a）100重量份的组合物得到的光聚合产物。 含有70〜100重量％的2-14℃（甲基）丙烯酸烷基酯和可与（甲基）丙烯酸酯共聚的30-0重量％单烯属不饱和单体的单体，（b）0.1-5重量份的自由基链抑制剂 （c）0.02-5重量份的多官能（甲基）丙烯酸酯 作为交联剂，（d）0.005-1重量份的光聚合引发剂 和（e）0.01-10重量份的硅烷偶联剂 压敏粘合片具有显示出≤1％雾度值和≥90％总透光率的压敏粘合剂层，该层形成在由厚度为25μm的塑料膜制成的脱模处理膜上， 125μm。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2003243819A

公开(公告)日：2003-08-29

申请号：JP2002036817

申请日：2002-02-14

Applicant: NITTO DENKO CORP

Inventor： TANAKA KAZUMASA ,  MUTA SHIGEKI ,  YAMAMOTO HIROSHI ,  YOSHIKAWA TAKAO

IPC: H05K3/34 ,  C09J7/02 ,  H05K1/00 ,  H05K3/00 ,  H05K3/38

Abstract: PROBLEM TO BE SOLVED: To provide an adhesive sheet for fixing flexible printed wiring board with which a flexible printed wiring board can easily be stuck to and peeled from a carrier board and which can suppress or prevent the deformation of deterioration of an adhesive agent layer even when the sheet is heated at the time of mounting an electronic component on the printed wiring board. SOLUTION: In this adhesive sheet for fixing flexible printed wiring board, the adhesive agent layer composed of an acrylic copolymer containing a monomeric main component comprising a (meth)acrylate having a 4-14C alkyl group and a functional group in the molecule and an aluminum-based crosslinking agent is formed on at least one surface of a substrate. The functional group of the acrylic copolymer can be derived from the functional group of a functional group-containing copolymerizable monomer as a copolymerizable monomeric component and it is preferable to adjust the ratio of the functional group- containing copolymerizable monomer to the whole amount of the monomeric components to 0.1-10 wt.%. The substrate is preferably a heat-resistant film having a continuously usable temperature of ≥100°C. COPYRIGHT: (C)2003,JPO