Teijin Limited

Nobuo Minobe

Ryoji Tsukamoto

Tomoyoshi Yamamoto

Tomoyuki Kishino

Kenichi Ishihara

Minoru Suzuki

Koji Kubo

Kinji Hasegawa

Hirofumi Murooka

Tetsuo Ichihashi

Hideo Katoh

Masahiko Kosuge

Kimihiko Sato

Hiroki Nagano

Manabu Kimura

Sumio Kato

Shunsuke Kubota

Hiroshi Toyao

Yoshihiro Oba

A polyester having a good color tone (a high L value and a low b value) and a low acetaldehyde content is obtained by using a catalyst containing a reaction product of (A) a titanium compound (1) represented by the general formula (I) and/or a titanium compound (2) obtained by reacting the titanium compound (1) of the general formula (I) with an aromatic polyhydric carboxylic acid represented by the general formula (II) or an anhydride thereof, with (B) a phosphorus compound (3) represented by the general formula (III). [wherein R, R, R, Rand R=a C-Calkyl group, k=1 to 3, m=2 to 4, and R=a substituted or non-substituted C-Caryl group or a C-Calkyl group].

Catalyst for preparation of polyester and process for preparing polyester using the catalyst

A poly(ethylene aromatic dicarboxylate ester) resin usable for the production of fibers, films and bottle-formed articles, is produced by polycondensing a diester of an aromatic dicarboxylic acid with ethylene glycol by using a catalyst including a non-reacted mixture or reaction product of a titanium compound component including at least one member selected from titanium alkoxides and reaction products of the titanium alkoxides with aromatic polyvalent carboxylic acids or anhydrides thereof, with a specific phosphorus compound, in which catalyst the contents of titanium and phosphorus elements are controlled.

Process for producing poly(ethylene-aromatic dicarboxylate ester) resin and resin product

Biaxially oriented polyester film to be laminated on a metal plate and molded

A biaxially oriented polyester film for magnetic recording media improved in slipperiness, shaving resistance and scratch resistance by protrusions formed on the film surface, namely, a polyester film for magnetic recording media wherein the film is a biaxially oriented polyester film which contains (I) heat resistant high molecular particles having an average particle size of 0.3 to 1.5 .mu.m in 0.001 to 0.5% by weight of the polyester, and

Biaxially oriented polyester film for magnetic recording media

A biaxially oriented polyester film formed from an aromatic polyester composition containing:

Biaxially oriented polyester film

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Matsuyama, Japan

Nobuo Minobe