Mitsubishi Gas Chemical Company, Inc.

Takeda Chemical Industries, Inc.

Shizuo Togo

Chiharu Nishizawa

Muneo Ito

Toshiaki Yamada

Akikazu Amagai

Eiichi Yonemitsu

Yoshinori Kondo

Kenichiro Hashimoto

Akitoshi Sugio

Tomoyuki Yui

Minoru Yamada

Junji Oshima

Goro Shimaoka

Michio Ohba

Yasuo Sugihara

Kazuhiko Ishii

Takaki Ikebe

Noboru Hara

Takao Teraoka

Akihiko Sanada

There is disclosed a core-shell polymer which comprises:

Core-shell polymer, resin composition and molded articles thereof

A polyphenylene ether resin composition having improved solvent resistance comprising (A) a modified polyphenylene ether obtained by modifying a polyphenylene ether with a modifier such as maleic anhydride and (B) a modified polyolefin obtained by modifying a polyolefin with both a modifier such as maleic anhydride and a vinyl or vinylidene compound such as styrene, and optionally (C) a binder such as phenylenediamine.

Solvent-resistant polyphenylene ether resin composition

A method of removing organic impurities from an aqueous solution of hydrogen peroxide, which comprises bringing an aqueous solution of hydrogen peroxide containing organic impurities into contact with a halogen-containing porous resin having a true specific gravity in the wet state of 1.1 to 1.3.

Method of removing organic impurities from aqueous solution of hydrogen

A process for producing a 2-tertiary-alkyl substituted anthraquinone, characterized by carrying out catalytic oxidation of a diphenylmethane type compound having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are different from each other, and independently hydrogen or tertiary-alkyl having 4 or 5 carbon atoms with the proviso that one of R.sub.1 and R.sub.2 is hydrogen, and R.sub.3 is alkyl having 1-3 carbon atoms, in vapor phase in the presence of a catalyst containing vanadium and cerium is disclosed.

Process for producing a 2-tertiary-alkyl substituted anthraquinones

A process for producing a 2-tertiary-alkyl substituted anthraquinone, characterized by carrying out catalytic oxidation of a diphenylmethane type compound having the formula ##STR1## wherein R.sub.1 and R.sub.2 are different from each other, and independently hydrogen or tertiary-alkyl having 4 and 5 carbon atoms with the proviso that one of R.sub.1 and R.sub.2 is hydrogen, and R.sub.3 is alkyl having 1-3 carbon atoms, in vapor phase in the presence of a catalyst comprising vanadium oxide is disclosed.

Process for producing a 2-tertiary-alkyl substituted anthraquinone

A process for alkylating the ortho-position of a phenol compound which comprises catalytically reacting a phenol compound containing at least one hydrogen atom at its ortho-position with an alcohol in the gaseous phase, characterized by that the catalyst containing iron oxide, silica, chromium oxide and one or more of alkali metal compound is used.

Process for alkylating the ortho-position of phenol compounds

A process for alkylating the ortho-position of a phenol compound which comprises bringing a phenol compound containing at least one hydrogen atom at its ortho-position and an alcohol into contact with a catalyst in the gaseous phase, said catalyst being selected from the group consisting of

Process for ortho-alkylation of phenol compounds

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Ichikawa, Japan

Shizuo Togo