Kuraray Co., Ltd.

Hirofumi Tanabe

Kazuhiko Maekawa

Katsuya Fujisawa

Tatsufumi Watanabe

Yoshirou Kondou

Seiya Shimizu

A method for producing a (meth)acrylate copolymer via anionic polymerization of a mixture of a di(meth)acrylate and an alkyl (meth)acrylate in the presence of an organolithium compound, a tertiary organoaluminum compound, and at least one Lewis base selected from ethers and tertiary polyamines. The (meth)acrylate copolymer produced has a (meth)acryloyl groups in a side chain.

Method for producing (meth)acrylate copolymer

An electrochromic display device including a substrate including a dividing wall and a concave portion surrounded by the dividing wall, a first conductive layer formed on a bottom surface of the concave portion, a second conductive layer formed on the dividing wall to electrically connect the first conductive layer within adjacent concave portions to each other in a predetermined direction, a third conductive layer disposed opposite to the first conductive layer, a first color-development layer and an electrolyte layer formed between the first conductive layer and the third conductive layer, and an insulating layer formed on the second conductive layer on the dividing wall.

Electrochromic display device and its manufacturing method

Disclosed is an optical device which can be formed as a thinner layer by a simplified manufacturing process at a reduced cost. Specifically, the optical device has a multilayer structure wherein a polyvinyl alcohol- or polyvinylene-base polarizing film (b) and protective films (a and c) are directly laminated on top of another without any adhesive layer including a pressure sensitive adhesive layer interposed therebetween. The protective film (c) on one side is composed of a triacetyl cellulose, an alicyclic polyolefin resin, or an alicyclic acrylic resin, and the protective film (a) on the other side is composed of a triacetyl cellulose, a polycarbonate, a polyethylene terephthalate, a polyethylene naphthalate, a (meth)acrylate resin, an alicyclic polyolefin resin, or an alicyclic acrylic resin.

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Tsukuba, Japan

Hirofumi Tanabe