Toyo Boseki Kabushiki Kaisha

Katsumasa Yamamoto

Kosaku Onodera

Masaru Nampei

Takamitsu Ariki

Keizo Kawahara

Masaru Nanpei

Shigeo Kobayashi

Toshio Hiramatsu

Tsuguo Fujii

Junji Uda

Kyoichi Mizuno

Nobuhiko Ichikawa

A process for treating the periphery of an unexposed photosensitive resin plate, which comprises irradiation of light having a wavelength of not longer than 300 nm on the periphery of the unexposed photosensitive resin plate until the periphery is free of stickiness. The process of the present invention solves problems such as sticking of the peripheral resin of unexposed plates to packages, sticking of unexposed resin to a working table, exposure table or vacuum adhesion sheet, sticking of dust, and so on on the periphery of unexposed plates, and sticking of unexposed resin to hands when handling, while eliminating all defects in handling during the steps of making printing plates.

Process for treating periphery of unexposed photosensitive resin plate

A process for preparing a polyarylene sulfide which comprises reacting an alkali metal sulfide compound and a polyhalo-substituted aromatic compound in an organic polar solvent in the presence of

Process for preparing polyarylene sulfide with alkali metal salt of

Disclosed herein are a process and apparatus for developing photopolymer plates which are useful for flexographic printing on account of their rubber-like elasticity, capability for development by water washing, and good ink resistance. The process and apparatus are designed to circulate by force the washout solution during the development operation in order to minimize the aggregation of photopolymer particles suspending in the washout solution and to completely catch scum which occurs when the unexposed part of the polymer plate is rubbed off in the washout solution.

Process and apparatus for developing photopolymer plates

A polyester resin composition having excellent gas barrier properties and transparency which comprises 100 parts by weight of a thermoplastic polyester resin (A), 1 to 100 parts by weight of a polyamide resin having metaxylylene group (B) and 0.01 to 50 parts by weight of a compatibilizing agent (C); and a polyester hollow molded article in the form of a single or multi-layered hollow molded article, wherein at least one of the layers is made of the above polyester resin composition.

Polyester resin composition and hollow molded article thereof

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Ohtsu, Japan

Katsumasa Yamamoto