Title:
LAYERED PRODUCT
Document Type and Number:
WIPO Patent Application WO/2011/148721
Kind Code:
A1
Abstract:
Provided is a layered product comprising an anti-reflection film that has a surface to which a protective film having excellent temporary adhesiveness and being less likely to leave residual adhesive after being peeled off is attached. The disclosed layered product includes an anti-reflection film and a protective film attached on the anti-reflection film. The surface of the anti-reflection film has a multitude of projections, the width between the vertices of adjacent projections being shorter than or equal to visible-light wavelengths. The protective film includes a support film and an adhesive layer that is in contact with the anti-reflection film. The adhesive layer is made of an adhesive prepared by cross-linking, with an epoxy cross-linking agent, a copolymer obtained by polymerizing monomer components which essentially include: an alkyl (meth)acrylate in which the alkyl group has 4 or less carbon atoms; and a carboxyl-group-containing monomer. The weight-average molecular weight of the copolymer is from 1,000,000 to 2,000,000. Of the monomer components in the copolymer, the alkyl (meth)acrylate, in which the alkyl group has 4 or less carbon atoms, has the largest weight proportion. The acid value of the copolymer is from 16 mgKOH/g to 120 mgKOH/g. The amount of the epoxy cross-linking agent mixed to 100 parts by weight of the copolymer is 1.5 parts by weight or greater.
Inventors:
MINOURA Kiyoshi (())
箕浦 潔 (())
IMAOKU Takao (())
今奥 崇夫 (())
TAGUCHI Tokio (())
箕浦 潔 (())
IMAOKU Takao (())
今奥 崇夫 (())
TAGUCHI Tokio (())
Application Number:
JP2011/058731
Publication Date:
December 01, 2011
Filing Date:
April 06, 2011
Export Citation:
Assignee:
Sharp Kabushiki Kaisha (22-22, Nagaike-cho Abeno-ku, Osaka-sh, Osaka 22, 〒5458522, JP)
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町２２番２２号 Osaka, 〒5458522, JP)
SOKEN CHEMICAL & ENGINEERING CO., LTD. (29-5, Takada 3-chome Toshima-k, Tokyo 31, 〒1718531, JP)
綜研化学株式会社 (〒31 東京都豊島区高田三丁目２９番５号 Tokyo, 〒1718531, JP)
MINOURA Kiyoshi (())
箕浦 潔 (())
IMAOKU Takao (())
シャープ株式会社 (〒22 大阪府大阪市阿倍野区長池町２２番２２号 Osaka, 〒5458522, JP)
SOKEN CHEMICAL & ENGINEERING CO., LTD. (29-5, Takada 3-chome Toshima-k, Tokyo 31, 〒1718531, JP)
綜研化学株式会社 (〒31 東京都豊島区高田三丁目２９番５号 Tokyo, 〒1718531, JP)
MINOURA Kiyoshi (())
箕浦 潔 (())
IMAOKU Takao (())
International Classes:
G02B1/11; B32B27/00; B32B27/30; C09J7/02; C09J133/04; G02B1/10
Attorney, Agent or Firm:
YASUTOMI & Associates (5-36, Miyahara 3-chome Yodogawa-ku, Osaka-sh, Osaka 03, 〒5320003, JP)
Claims: