Kuraray Co., Ltd.

Idemitsu Petrochemical Co., Ltd.

Shunro Taniguchi

Shinichi Yokota

Masao Ishii

Takayuki Okamura

Yoshifumi Murata

Kazushige Ishiura

Noriaki Yoshimura

Haruhisa Masuda

Hideo Takamatsu

Koji Hirai

Michihiro Ishiguro

Keishiro Igi

Kazuto Hashimoto

Hideki Endo

Satoshi Kinoshita

Takeshi Matsumoto

Kazuhiko Tanaka

Masao Kawamoto

Chihiro Okamoto

Kiyoshi Hirakawa

Katsunori Takamoto

Kenji Tanaka

Nozomu Sugoh

Kenji Okuno

Kenichi Yoshioka

Sigeki Nakatsukasa

Atsuko Migaki

(A) A polyester resin composition comprising a copolymerized polyethylene terephthalate (copolymerized PET) comprising 5 to 40 mole % of naphthalenedicarboxylic acid units, a cobalt compound and/or a manganese compound, an olefin polymer and a compatibility-improving agent, in specific amounts; and (B) a polyester resin composition comprising the above copolymerized PET which contains specific amounts of both a cobalt compound and a manganese compound are excellent in resistance to hydrogen peroxide, flavor-barrier properties, gas-barrier properties, heatsealability and mechanical properties such as elongation and strength and, utilizing these features, are effectively usable for various end-uses in particular as packaging materials for beverages such as fruit juices containing flavor components.

Polyester resin composition

Polyester fiber

A polyester composition principally comprising a polyester and a specific block copolymer having terminal hydroxyl groups. The polyester composition is excellent not only in heat resistance, solvent resistance and processability, but also in shock resistance.

Polyester composition and process for producing the same

Process for producing polyurethane

A polycarbonate resin composition which comprises

Polycarbonate resin composition

Polyester resin compositions exhibiting excellent impact resistance and moldability are disclosed comprising:

Polyester resin compositions

Polycarbonate resin compositions are disclosed, comprising: (1) (A) a polycarbonate resin and (B) polyesterether elastomer, said elastomer composing of a bifunctional carboxylic acid component and a glycol component comprising polyalkylene glycol and ethylene glycol, or (2) the components (A) and (B), and (C) a rubber-like elastomer, or (3) the components (A) and (B), and (D) a polyester resin, or (4) the components (A), (B), (C) and (D). These compositions are excellent in solvent resistance and so forth, and further possess excellent physical and thermal properties characteristic of a polycarbonate resin. Thus the compositions are useful for use in production of industrial and electrical articles, such as a car bumper in the field of car industry.

A process for producing a novel polyester polyurethane having excellent hydrolysis resistance and excellent flexibility at low temperature, which is obtained from a polyisocyanate and a polyester polyol which is obtained by reaction a dicarboxylic acid with a mixture of 1,9-nonanediol and a polyol represented by the formula ##STR1## wherein R.sup.1 denotes methyl group or ethyl group, R.sup.2 denotes hydrogen atom, methyl group, ethyl group, hydroxymethyl group or hydroxyethyl group, and n is an integer of 1 to 5, said polyester polyol having an average molecular weight of 500 to 30,000.

Process for producing polyester polyurethane

Growing community of inventors

Kurashiki, Japan

Shunro Taniguchi