Showa Highpolymer Co., Ltd.

Showa Denko K.k.

Toppan Printing Co., Ltd.

Showa Highpower Co., Ltd.

Mitsuhiro Imaizumi

Eiichiro Takiyama

Ryosuke Kamei

Yoshihiro Moteki

Hideharu Kimura

Takashi Fujimaki

Masataka Kotani

Haruhiko Kondo

Hiroshi Uchida

Masayuki Taniguchi

Nobuyuki Nagato

Tadashi Iino

Takeshi Iwasa

Yasushi Ichikawa

Ryoji Ishioka

Hiroshi Umeyama

Yukio Doi

Noriaki Harigai

Jun Suzuki

Toshiaki Hino

Yoshiro Okino

Ryutaro Fujihira

Thoru Watanabe

Katsura Horikoshi

According to the present invention, a process for producing an epoxy compound, where an epoxy compound can be selectively produced from olefins with good yield at low cost in a safe manner by a simple operation under mild conditions without using a quaternary ammonium salt or a metal compound, is provided. The present invention relates to a process for producing an epoxy compound, comprising epoxidizing a carbon-carbon double bond of an organic compound having a carbon-carbon double bond by using hydrogen peroxide as an oxidant, wherein the epoxidation is carried by out using an organic nitrile compound and an organic amine compound.

Process for producing epoxy compound

The invention provides a method for producing an aqueous biodegradable polyester dispersion and includes the step of mixing and kneading a molten biodegradable polyester, an aqueous emulsifier solution having a surface tension in terms of 1.0% by weight aqueous solution at 20&deg; C. of 63 mN/m or less, and other additives according to necessity to yield an aqueous dispersion having a solid concentration of 40% by weight or more and a viscosity at 20&deg; C. of 1000 mPa&middot;s or more. The invention can provide a method for producing an aqueous biodegradable polyester dispersion that has a high solid concentration and a high viscosity and is very advantageous in practical use.

Method for producing aqueous biodegradable polyester dispersion

An electroconductive curable resin composition comprising (A) a graphite powder containing boron in the graphite crystal and (B) a curable resin and/or a curable resin composition, at a ratio of 20 to 99.9:80 to 0.1 in terms of the mass ratio of the component (A) to component (B); and a cured product thereof and a formed product obtained by using the curable resin composition. The cured product exhibits excellent electroconductivity even with a relatively small amount of electroconductive filler charged, and also exhibits a high heat resistance, a good heat-radiating property and superior formability or workability.

Electroconductive curable resin composition, cured product thereof and formed product using the composition

Aliphatic polyester resin and method for producing same

Stretched blow molding articles are prepared by using an aliphatic polyester composition having a melting point of at least 70.degree. C. including: 97.5 to 75 parts by weight of an aliphatic polyester copolymer (A) having a Mn of at least 50,000 which is obtained by reacting 100 parts by weight of a polyester diol (a) with 0.1 to 5 parts by weight of diisocyanate, wherein the polyester diol (a) is obtained by conducting a polycondensation of 1 mol of an acid component consisting of 70 to 90 mol % of succinic acid and 10 to 30 mol % of adipic acid, with 1 to 1.1 mol of glycol; and 2.5 to 25 parts by weight of potybutylene succinate (B) with a linear structure, (C) with a branched long chain structure, or (D) with a branched longer chain structure, which have an Mn of at least 50,000 and are composed from some of succinic acid, 1,4-butanediol, polyfunctional comonomer and di- or poly-functional coupling agents.

Stretched blow molding articles

An aliphatic polyester resin composition having a low combustion beat, characterized in that a filler is mixed with an aliphatic polyester having a number-average molecular weight of at least 10,000, synthesized from glycol and aliphatic polybasic acid or acid derivative thereof. A sheet formed from the composition bas excellent tensile strength, stiffness and impact strength as well as being biodegradable.

Polyester resin composition

A method for producing polyester foamed articles comprising: heating and foaming a resin composition comprising a foaming agent, and an aliphatic polyester having a melt viscosity of 1.0.times.10.sup.3 -1.0.times.10.sup.6 poises at a temperature of 190.degree. C. and a shear rate of 100 sec.sup.-1, and having a melting point of 70.degree.-190.degree. C. Extrusion or forming in a mold using preexpanded beads can be applied. The foamed articles such as insulating boxes and cushioning materials have biodegradability and excellent mechanical properties such as tensile strength and cushioning properties.

Polyester foamed articles and method for producing the same

A sheet formed by using as a main component an aliphatic polyester having a melt viscosity of 1.0.times.10.sup.3 -1.0.times.10.sup.6 poises at a temperature of 190.degree. C. and a shear rate of 100 sec.sup.-1, and having a melting point of 70.degree.-190.degree. C. The sheet of the present invention is biodegraded when buried in soil and is excellent in mechanical properties and transparency. The sheet is also superior in non-absorbency of aroma as well as heat-sealability and formability.

Polyester sheet

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Kawasaki, Japan

Mitsuhiro Imaizumi