Sumitomo Chemical Company, Limited

Takanori Fujita

Masahiko Moritani

Masahiro Niwano

Yukio Yasunori

Kazuhiro Yokoo

Toshiki Doi

Shunji Iwahashi

Masahiro Yamasaki

Masashi Mori

An improved process for producing a vinyl or vinylidene polymer comprising polymerizing a monomer having a vinyl or vinylidene group in the presence of

Process for producing vinyl polymer or vinylidene polymer

A process for the production of formed articles of aromatic vinyl resin having a small birefringence and a high refractive index by a cast polymerization process rapidly and with high productivity, wherein the formed articles of aromatic vinyl resin are light and useful for the production of various optical elements such as lenses and prisms.

Process for the production of formed article of aromatic vinyl resin

An anti-reflection plate for a display device, including a transparent substrate wherein, on one or both surfaces of the substrate, a flat first layer consisting of a transparent hardening agent containing a silicon-containing organic compound has been applied and dried and, on the first layer, a second layer consisting of a transparent hardening agent containing a silicon-containing compound has been spray coated and hardened to form an uneven surface having projections each having a height of 0.1 to 2.0 .mu.m in height, a diameter of 10 to 100 .mu.m and a height/diameter ratio of 1/30 to 1/500 can effectively prevent reflection of external light on a screen of a display device without deteriorating the resolution of an image on the screen.

Anti-reflection plate for display device

Synthetic resin articles to be printed, plated or coated are cleaned prior thereto by carrying the articles into a cleaning zone where they are contacted with an aqueous detergent solution which is allowed to flow upward and to which an ultrasonic wave is applied, carrying the articles from the cleaning zone to a rinsing zone where they are contacted with warm water which is allowed to flow upward, carrying the articles from the rinsing zone to a dipping zone to contact them with more fresh warm water which is allowed to flow upward, and then pulling the articles up slowly from the dipping zone to drain off the water attached to the articles.

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Niihama, Japan

Takanori Fujita