Mitsubishi Petrochemical Company Limited

Mitsubishi Chemical Corporation

Sumitomo Chemical Company, Limited

Kazunori Yano

Katsuhiro Abe

Kenji Nagaoka

Yoshiharu Tatsukami

Hiroyoshi Kaito

Ryuhei Matsui

Akeharu Wakayama

Shuhei Yada

Satoshi Kato

Masahiro Fujiwara

Masahide Ochiumi

Rie Shirahama

Shigekazu Ohi

Yoshinobu Kobayashi

Atsushi Kusuno

Teruhisa Goto

Shigeki Kiriyama

Satoru Yamamoto

Yuuichi Shimizu

Tsukasa Satou

Yuuko Motegi

Akiharu Wakayama

An aliphatic polyester polyether copolymer is provided having an aliphatic polyester moiety comprising 35 to 50 molar % of an aliphatic diol unit, 35 to 50 molar % of an aliphatic dicarboxylic acid unit and 0 to 30 molar % of an aliphatic oxycarboxylic acid unit and a polyether moiety, wherein &#x3b7;/C is not less than 1.40 and the ratio by weight of the polyether moiety to the aliphatic polyester polyether copolymer is 0.1 to 90% by weight.

Aliphatic polyester polyether copolymer, process for producing the same and aliphatic polyester composition using the copolymer

A modified polyolefin resin composition according to the present invention comprises a polyolefin resin modified with an unsaturated carboxylic acid and is suitable for imparting a good adhension property. The adhesion property of the modified polyolefin resin composition is largely influenced by the graft structure composed of the unsaturated carboxylic acid polyolefin resin, which is produced upon grafting the polyolefin resin with the unsaturated carboxylic acid

Modified polyolefin resin composition

Hydrophilic resin composition and process for producing the same

The amount of impurities contained in a modified polyolefin obtained by means of melt-kneading grafting is reduced by melt-kneading the modified polyolefin in the presence of water. A melt-kneading machine having a vent port is typically used in this process.

Method of after-treatment of modified polyolefins

A thermoplastic resin composition which comprises 100 parts by weight of a copolymer of propylene with at least one particular diene monomer or a mixture of said propylene copolymer with another crystalline propylene polymer, of the content of the diene monomer polymerized of 0.05 to 20 mol %; 90 to 300 parts by weight of an olefin copolymer rubber that can be crosslinked by dynamic heat treatment with a crosslinking agent; 50 to 1900 parts by weight relative to a total of 100 parts by weight of the 1st and 2nd components of a crystalline propylene polymer; and 0 to 100 parts by weight relative to a total of 100 parts by weight of the 1st, 2nd and 3rd components of a filler.

Thermoplastic resin compositions having improved strength and method for

A process for producing a polyphenylene ether is disclosed, comprising oxidatively polymerizing a phenol in an organic solvent in the presence of a catalyst for oxidative polymerization, finely dispersing the resulting polyphenylene ether containing the organic solvent in an aqueous dispersion medium containing an acid compound, and heating the aqueous dispersion to remove the solvent from the polyphenylene ether. The resulting polyphenylene ether has excellent powder properties and contains a reduced amount of a catalyst residue.

Process for producing polyphenylene ether, dispersing polyether in

A process for producing a plyphenylene oxide is disclosed, comprising oxidative polymerization of a nucleus-substituted phenol with an oxygen-containing gas in an organic solvent in the presence of a catalyst system comprising a manganese compound containing at least one divalent manganese salt, at least one basic compound selected from hydroxides, alkoxides or phenoxides of the group IA metals of the Periodic Table and hydroxides or oxides of the group IIA metals of the Periodic Table, an alkanolamine represented by formula (I)

Process for producing polyphenylene oxide with alkanolamine and

Polyphenylene ether compositions comprising a polyphenylene ether, an alkenylaromatic polymer, a rubber substance, a polyethylene or ethylenic copolymer, and a mineral oil. These polyphenylene compositions are excellent in the balance among fluidity, impact resistance and gloss.

Polyphenylene ether compositions

Polyphenylene ethers are produced by oxidative polymerization of phenols in the presence of a catalyst comprising the combination of divalent manganese salts, an oxine or derivatives thereof, an alkanolamine, and an alkaline compound. This catalyst has an increased polymerization activity and achieves a higher productivity. In addition, the catalyst enables the polymerization to conduct at relatively high temperatures.

Process for producing polyphenylene ether

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Mie, Japan

Kazunori Yano