Nitto-denko Corporation

Nippon Shokubai Co., Ltd.

Masayuki Satake

Yuusuke Toyama

Akiko Ogasawara

Atsushi Yasui

Tomoyuki Kimura

Minoru Miyatake

Shusaku Goto

Takeharu Kitagawa

Takashi Kamijo

Tomohiro Mori

Toshitsugu Hosokawa

Shinichi Inoue

Takashi Shouda

Yutaka Moroishi

Kenichi Okada

Kohei Yano

Takaaki Ishii

Yuuji Saiki

Fumiko Nakano

Taiki Shimokuri

Takuya Matsunaga

Tetsurou Ikeda

Fumiaki Shirafuji

Takashi Shimizu

Naofumi Kosaka

Reiko Akari

Hiroshi Shibata

Yasushi Takahashi

Shuuji Yano

Yosuke Shimizu

Shigenori Morita

Masakatsu Urairi

Kenji Yoda

Takayuki Shigematsu

Junichi Fujisawa

Kiichi Shimodaira

Satoshi Honda

Masakuni Fujita

Atsushi Takashima

Shou Takarada

Toshitaka Takahashi

Chieko Kitaura

Ginji Mizuhara

Yousuke Makihata

Shigeki Kawabe

Kunihiro Inui

Osamu Hayashi

Akinobu Souma

Hiroyuki Yoshimi

Makoto Kojima

Youichirou Sugino

Seiichi Kusumoto

Kuniaki Ishibashi

Takeshi Saito

Masayuki Okamoto

Masahiro Yaegashi

Kentarou Kobayashi

Yuuki Nakano

Tsuyoshi Chiba

Toshiyuki Umehara

Tetsuo Omata

Masatoshi Tomonaga

Yoshihiro Minamizaki

Tomohide Banba

Katsuhiko Kamiya

Mitsuru Suzuki

Akiko Sugino

Senri Kondou

Kentarou Yoshida

Ryoko Asai

Kaori Mizobata

Atsushi Kitagawa

Hiroshi Sugawa

Teppei Niino

Tatsuya Yamasaki

Akira Ootani

Eiichiro Fukusaki

Masashi Shinagawa

Kensuke Tani

Keisuke Shimokita

Katsuhide Kojima

Satoshi Itou

Yutaka Fujita

Ryota Masuda

Narifumi Ueda

Arata Fujihara

Naotaka Kinjou

Michihito Ooishi

Masaaki Kawaguchi

Mizuho Nagata

Masatsugu Soga

Ai Murakami

Kayo Oohira

Noboru Itano

Shigeo Kobayashi

Provided is a PSA sheet having a PSA layer. The PSA layer includes a layer A forming at least one surface thereof. The PSA sheet has an adhesive strength N0 of 2.0 N/10 mm or greater, after one day at room temperature following application of the layer A side to a surface of an alkaline float glass plate as an adherend having a contact angle of 5°-10° with distilled water; has an N1 to N0 reduction rate of 30% or lower, wherein N1 is a water-resistant adhesive strength measured after stored at room temperature for one day, immersed in water for 30 minutes, taken out from the water and then residual water is wiped off, and has an N2 to NO reduction rate of 40% or higher, wherein N2 is a water-peel strength measured after stored at room temperature for one day, 20 μL distilled water is dropped onto the adherend and is allowed to enter a PSA layer/adherend interfacial edge. N2 is measured at a tensile speed of 300 mm/min at a peel angle of 180°.

Pressure-sensitive adhesive sheet and method for peeling pressure-sensitive adhesive sheet

Provided is a method for peeling a PSA sheet adhered on a polarizing plate. The PSA sheet has a PSA layer. The PSA layer includes a layer A forming at least one surface of the PSA layer. Of the polarizing plate, the surface to which the PSA sheet is adhered is corona-treated or plasma-treated. The peeling method includes a water-peel step in which the PSA sheet is peeled from the polarizing plate, in a state where an aqueous liquid exits at the interface between the polarizing plate and the PSA sheet at the front line of peeling the PSA sheet from the polarizing plate, with the aqueous liquid allowed to further enter the interface following the movement of the peel front line.

Method for peeling pressure-sensitive adhesive sheet

Provided is an adhesive member to be adhesively fixed through pressure which has both position adjustability and adhesiveness and is capable of producing a sufficient adhesive strength in addition to the position adjustability. The adhesive member comprises a support, a pressure-sensitive adhesive layer provided on one surface of the support, and a plurality of protrusion elements arranged, in spaced-apart relation to each other, on a principal surface of the pressure-sensitive adhesive layer on a side opposite to the support. Each of the protrusion elements is composed of an aggregation of a plurality of cohesive particles, wherein the adhesive member has a frictional force of 0.4 N/cmor less, with respect to a stainless steel plate serving as an adherend, as measured when the protrusion elements are in contact with a surface of the adherend, and a shear adhesive strength of 45 N/cmor more.

Adhesive member to be adhesively fixed through pressure

An aqueous dispersion-type pressure-sensitive adhesive composition for an optical film includes a emulsion particles of a core-shell structure, wherein the emulsion particles include a (meth)acryl-based copolymer (A) having a glass transition temperature of &#x2212;55&#xb0; C. to 0&#xb0; C. and a (meth)acryl-based copolymer (B) having a glass transition temperature of 0&#xb0; C. to 180&#xb0; C., in a single emulsion particle, one of the copolymers (A) and (B) forms a core layer, and another forms a shell layer, at least one of the copolymers (A) and (B) contains a carboxyl group-containing monomer, a difference of the glass transition temperatures between the copolymers (A) and (B) is 50&#xb0; C. or more, and a ratio (A)/(B) (by weight) is in the range of 50/50 to 90/10.

Pressure-sensitive adhesive composition for optical film, pressure-sensitive adhesive layer for optical film, pressure-sensitive adhesive optical film, and image display device

A pressure-sensitive adhesive layer-attached polarizing film of the invention includes: a polarizing film; and a pressure-sensitive adhesive layer provided on the polarizing film, wherein the polarizing film includes a polarizer and a transparent protective film provided on only one side of the polarizer, the pressure-sensitive adhesive layer is provided on a side of the polarizer where the transparent protective film is absent, and the pressure-sensitive adhesive layer is made of a pressure-sensitive adhesive composition containing a (meth)acryl-based polymer (A) and an alkali metal salt (B). The pressure-sensitive adhesive layer-attached polarizing film has a pressure-sensitive adhesive layer with an antistatic function and satisfactory durability and whose optical properties are less likely to be degraded.

Pressure-sensitive adhesive layer-attached polarizing film and image display

A pressure-sensitive adhesive composition, comprising:

Adhesive agent composition, adhesive agent layer, polarizing plate provided with adhesive agent layer, and image formation device

Adhesive composition, adhesive layer, polarizing film having adhesive agent layer, and image forming device

Provided is a polarizing plate with a pressure-sensitive adhesive layer which is excellent in reliability of optical properties and durability of pressure-sensitive adhesion. The polarizing plate with a pressure-sensitive adhesive layer comprises a polarizing film and a pressure-sensitive adhesive layer provided directly on at least one surface of the polarizing film. The pressure-sensitive adhesive layer comprises a pressure-sensitive adhesive composition containing a pressure-sensitive adhesive polymer, and an amount of an acid component in a total monomer component constituting the pressure-sensitive adhesive polymer is less than 8 wt %.

Polarizing plate with a pressure-sensitive adhesive layer and image display device

A pressure-sensitive adhesive layer-attached polarizing film of the present invention includes a polarizing film and a pressure-sensitive adhesive layer provided on the polarizing film, wherein the polarizing film includes a polarizer with a thickness of 10 &#x3bc;m or less and a transparent protective film or films provided on one or both sides of the polarizer, and the pressure-sensitive adhesive layer is formed from a pressure-sensitive adhesive composition containing a (meth)acryl-based polymer (A) and an ionic compound (B). The pressure-sensitive adhesive layer-attached polarizing film has an antistatic function and exhibits durability.

Polarizing film with adhesive layer and image display apparatus

An optical pressure-sensitive adhesive that is for use in pressure-sensitive adhesive attached optical films, includes an acrylic copolymer and is less likely to cause display unevenness in the peripheral portion of a display screen. An optical pressure-sensitive adhesive, comprising: an acrylic copolymer containing alkyl (meth)acrylate (a1) and N-(2-hydroxyethyl)(meth)acrylamide (a2) as a monomer unit.

Optical pressure-sensitive adhesive, pressure-sensitive adhesive attached optical film, and image display

The present invention aims at providing an antistatic pressure-sensitive adhesive optical film exhibiting excellent antistatic effect, optical properties, and water resistance and having excellent adhesion between the antistatic layer and the pressure-sensitive adhesive layer. An antistatic pressure-sensitive adhesive optical film, the optical film having an antistatic layer laminated on at least one side of the optical film, and a pressure-sensitive adhesive layer further laminated on the antistatic layer, wherein the antistatic layer comprises a conductive polymer and a sulfonic acid compound as raw material components, and the pressure-sensitive adhesive layer is formed of an acryl-based pressure-sensitive adhesive containing nitrogen.

Antistatic adhesive optical film and image display

A pressure-sensitive adhesive optical film of the invention comprises an optical film and a pressure-sensitive adhesive layer provided on the optical film, wherein the pressure-sensitive adhesive layer has a thickness (&#x3bc;m) standard deviation of 0.12 &#x3bc;m or less. The pressure-sensitive adhesive optical film makes it possible to reduce the problem of visible unevenness caused by a pressure-sensitive adhesive layer.

Adhesive optical film, manufacturing method for the same and image display device using the same

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Ibaraki, Japan

Masayuki Satake