Teijin Limited

Takafumi Kudo

Yukihiko Minamihira

Tetsuo Yoshida

Kinji Hasegawa

Takeo Asai

Masahiko Kosuge

Youji Tanaka

Noriyo Kimura

Kazutaka Masaoka

Kenji Suzuki

Shinya Watanabe

Koji Kubo

Hideshi Kurihara

Shinichi Kawai

Makoto Handa

Koji Furuya

Ryoji Tsukamoto

Mitsumasa Ono

Akira Kameoka

Tomokatsu Ura

An aromatic polyester film, which comprises an aromatic polyester comprising 2,6-naphthalenedicarboxylic acid as the main dicarboxylic acid component and 1,3-propanediol as the main diol component and having a density of at least 1.310 g/cm . A laminated film comprising another polyester layer can be formed from this aromatic polyester film. An aromatic polyester containing a small amount of a sulfonic acid phosphonium salt used as one of the aromatic polyesters forming this laminated film is excellent in electrostatic casting properties and resistance to the contamination of an electrostatic wire, and an aromatic polyester containing an inorganic anti-fungus agent is used for antifungal application.

Trimethylene-2, 6-naphthalene dicarboxylate (co)polymer film, quaternary phosphonium sulfonate copolymer and compositions thereof

A thermoplastic resin composition containing inorganic particles, wherein (i) the inorganic particles have pore volume of 0.1 to 3 ml/g and (ii) the inorganic particles are treated at the surfaces with a hydrophilic polyester of 0.05 to 10 times the weight of the inorganic particles or with a silicon-containing organic compound. This composition can be obtained by feeding a dispersion of the above-mentioned surface-treated inorganic particles into a vented double-screw kneader and extruder to mix it with a thermoplastic resin.

Thermoplastic resin composition, process for production thereof, and biaxially oriented film produced from said composition

A photoresist layer supporting film is (A) formed from a polymer composition comprising (i) 55 to 100% by weight of a copolyester containing ethylene terephthalate units as a main recurring unit and having a melting point of 210 to 250.degree. C. and (ii) 0 to 45% by weight of polybutylene terephthalate or a copolyester containing butylene terephthalate units as a main recurring unit and having a melting point of not lower than 180.degree. C. and (B) has a plane orientation coefficient of 0.08 to 0.16. Since this supporting film is excellent in substrate shape follow-up properties and resolution, it is suitable for the preparation of a photoresist film laminate by laminating a protective film and a photoresist layer on the surface thereof.

Photoresist layer supporting film and photoresist film laminate

A laminated polyester film for use as a film to be laminated on a metal plate, which comprises (A) a first layer formed of (a1) a first aromatic copolyester prepared in the presence of a germanium compound as a polymerization catalyst, which contains terephthalic acid as the main dicarboxylic acid component and ethylene glycol as the main glycol component and which has a melting point in the range of from 210.degree. to 245.degree. C. and a glass transition temperature of at least 60.degree. C., the first layer having (a2) a surface roughness (Ra) in the range of from 2 to 13 nm, and (B) a second layer formed of (b1) a polyester composition obtained by melt-mixing 90 to 45% by weight of a second aromatic copolyester which is composed, as a main recurring unit, of ethylene terephthalate, is produced in the presence of a germanium compound as a polymerization catalyst and has a melting point in the range of from 210.degree. to 252.degree. C. and 10 to 55% by weight of a third aromatic polyester which is composed, as a main recurring unit, of tetramethylene terephthalate and has a melting point in the range of from 180.degree. to 223.degree. C., the second layer having (b2) a surface roughness (Ra) of 15 to 50 nm; and (C) which exhibits excellent moldability when a metal plate laminated therewith is deep-drawn.

Laminated polyester film for use as film with which metal plate is to be

A biaxially oriented film to be laminated on a metal, which is a laminate film comprising (A) a first layer of a polyester comprising ethylene terephthalate as a main recurring unit; and (B) a second layer formed from a composition of a polycarbonate and polyesters, the polycarbonate and the polyesters being each contained in amounts of 20 to 50% by weight and 50 to 80% by weight based on the total thereof; the polyesters consisting essentially of a first polyester comprising ethylene terephthalate as a main recurring unit and having a terminal carboxyl group concentration of more than 5 eq./10.sup.6 g and a second polyester comprising butylene terephthalate as a main recurring unit and having a terminal carboxyl group concentration of less than 20 eq./10.sup.6 g; and the first and second polyesters being each contained in an amount of 10 to 90% by weight based on the total thereof; and in which (C) the plane orientation coefficients of the first layer and second layer are both in the range of 0.05 to 0.10.

Biaxially oriented film to be laminated on a metal

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Sagamihara, Japan

Takafumi Kudo