Mitsui Chemicals, Inc.

Mitsui Toatsu Chemicals, Incorporated

Tadahito Nobori

Usaji Takaki

Kazumi Mizutani

Shinji Kiyono

Isao Hara

Takaomi Hayashi

Atsushi Shibahara

Katsuhiko Funaki

Tatsuhiro Urakami

Masahiro Kouno

Norio Kashiwa

Keisuke Takuma

Satoru Moriya

Nobuya Kawauchi

Joji Kamiya

Seiji Ota

Tsutomu Katakami

Kenichi Sugimoto

Toshiaki Suzuki

Makoto Suzuki

Satoshi Yamasaki

Junichi Imuta

Yoshiho Sonobe

Haruki Mori

Tsukuru Izukawa

Tatsuro Yokoyama

Tsuyoshi Matsumoto

Shoji Tamai

Tomoaki Matsugi

Takashi Kuroki

Ryoji Mori

Shinichi Kojoh

Yoshihiro Yamamoto

Satoshi Tamura

Akira Hasegawa

Sunao Maeda

Kazuhiko Ohkubo

Ariko Nishikawa

Naritoshi Yoshimura

Michihiko Miyamoto

Masaaki Ishii

Setsuko Fujiyoshi

Tomoyuki Kawabata

Yoshihisa Inoue

Taku Koda

Mitsuyuki Mizoguchi

Hideyuki Kaneko

Shinsuke Matsumoto

Makoto Sukegawa

Masahiro Toriida

Masahiro Isobe

Junji Tan

Seijiro Sakai

Hiroyuki Sakayama

Akira Matsuura

Mikio Matsufuji

Kunio Sannohe

Takaharu Abe

Kuniyuki Takamatsu

Manabu Shimoda

Koutaro Suzuki

Fumio Yamazaki

Takuo Tajima

Yasunori Hara

Yoshiharu Hirose

Kanji Yoshihara

Yoshiteru Taniguchi

Shunichi Hama

Koutarou Suzuki

Hiromi Jouyama

Miyuki Konno

Masaaki Aoki

Hitoshi Watanabe

A polymerization catalyst composition for a radically polymerizable monomer of the present invention comprises a transition metal-containing phosphazenium composition which is produced by mixing a phosphazenium compound with a compound of a transition metal belonging to Groups 4 to 12 in the periodic table and an organic halogen compound.

Polymerization catalyst composition and process for production of polymer

The problem of the invention is to provide a novel biodegradable polymer without water solubility (hygroscopicity), but with moldability and excellent water disintegratability and biodegradability, a production method thereof, a molded product thereof and applications thereof. The biodegradable polymer of the invention is a biodegradable polymer having one or more imine bonds within a molecule, characterized in that the imine bond constitutes part of a main chain structure of the biodegradable polymer. The biodegradable polymer preferably comprises a biodegradable unit and an imine unit having one or more imine bonds and has a chemical structure, in which the biodegradable units are linked by the imine unit.

Biodegradable polymer, production method thereof, molded product thereof, and use thereof

A polar group-containing olefin copolymer having excellent adhesion properties to metals or polar resins and excellent compatibility therewith, a process for preparing the copolymer, a thermoplastic resin composition containing the copolymer, and uses thereof. The polar group-containing olefin copolymer comprises a constituent unit derived from an &#x25a1;-olefin of 2 to 20 carbon atoms, and a constituent unit derived from a straight-chain, branched or cyclic polar group-containing monomer having at the end a polar group such as a hydroxyl group or an epoxy group and/or a constituent unit derived from a macromonomer having at the end a polymer segment obtained by anionic polymerization, ring-opening polymerization or polycondensation. The polar group-containing olefin copolymer can be prepared by polymerizing the &#x3b1;-olefin with the polar group-containing monomer and/or the macromonomer in the presence of a metallocene catalyst. The polar group-containing olefin copolymer and the thermoplastic resin composition containing the copolymer are used for films, sheets, modifiers, building/civil engineering materials, automobile exterior trim, electric/electronic parts, coating bases, compatibilizing agents, etc.

Polar group-containing olefin copolymer, process for preparing the same, thermoplastic resin composition containing the copolymer, and uses thereof

The present invention is a polar group-containing olefin copolymer having excellent adhesion properties to metals or polar resins and excellent compatibility therewith. A process for preparing the copolymer, a thermoplastic resin composition containing the copolymer, and uses thereof are also described. The polar group-containing olefin copolymer comprises a constituent unit derived from an &#x3b1;-olefin of 2 to 20 carbon atoms, and a constituent unit derived from a straight-chain, branched or cyclic polar group-containing monomer having at the end a polar group such as a hydroxyl group or an epoxy group and/or a constituent unit derived from a macromonomer having at the end a polymer segment obtained by anionic polymerization, ring-opening polymerization or polycondensation. The polar group-containing olefin copolymer and the thermoplastic resin composition containing the copolymer are used for films, sheets, modifiers, building/civil engineering materials, automobile exterior trim, electric/electronic parts, coating bases, compatibilizing agents, etc.

There are disclosed, a polyether ketone having a primary particle size of 50 &#x3bc;m or less; and a method of producing a polyether ketone by a desalting polycondensation, which contains a step of conducting a polymerization reaction under a condition of deposition of the polymer. The polyether ketone obtained by the present invention has small particle size, high molecular weight and sufficiently small content of impurities such as alkali metal components.

Polyether ketone and method of producing the same

Olefin block copolymers (A-1) are disclosed represented by the formula (I) PO-g-B. . . (I) wherein POis a segment comprised of repeating units derived from an olefin having 2 to 20 carbon atoms, gis an ester, ether, amide, imide, urethane, urea, silylether or carbonyl linkage, and Bis a segment containing an unsaturated hydrocarbon or a hetero atom. The olefin block copolymers are suitable for uses in adhesives, various molded articles such as construction and civil engineering materials, automobile interior and exterior materials, gasoline tanks, electric and electronic parts, medical care and sanitation materials, materials of miscellaneous goods, resin materials having environmental degradation properties, films and sheets, modifiers and dispersions.

Olefin block copolymers, processes for producing the same and uses thereof

A salt useful as an active species in an organic reaction and represented by the following chemical formula (1):wherein n stands for an integer of from 1 to 8, Zrepresents an n-valent anion of an active hydrogen compound, a, b, c and d each stands for a positive integer, and Rs represent the same or different hydrocarbon groups. In addition, a simple and efficient process is provided for producing a poly(alkylene oxide) by polymerizing an alkylene oxide compound in the presence of the salt represented by the chemical formula (1).

Poly (alkylene oxide) prepared in the presence of a phosphazenium salt or compound

An epoxy resin composition comprising an epoxy resin (A), a curing agent (B) and a curing accelerator (C), wherein the curing agent (B) is a phenol compound having two or more hydroxyl functional groups or a compound obtained by esterification of the phenol compound or a mixture of these compounds, and the curing accelerator (C) is a salt of a phosphazenium compound represented by a formula (I):(wherein Rs each represent a hydrogen atom, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms or an aryl or aralkyl group having 6 to 10 carbon atoms and may be all the same or different from one another; and Zrepresents a halogen anion, hydroxy anion, alkoxy anion, aryloxy anion or carboxy anion).

Curing agent composition for epoxy resins, epoxy resin composition and use thereof

The purpose of the present invention is to provide polymerization catalyst which can produce quite efficiently (co)polymer having number average molecular weight and number of molecules which are accurately controlled in producing method of (co)polymer by the polymerization of polar unsaturated compound, and provide living polymerized (co)polymer obtained according to the producing method. For the purpose, polymerization catalyst composition which comprises the composition comprising organic oxysalt compound and hydroxycarbonyl compound having at least both an alcoholic hydroxyl group and a carbonyl group in the same molecule is provided and the polar unsaturated compound is polymerized by using the polymerization catalyst composition. The composition containing the obtained (co)polymer were able to provide thermosetting powder coating composition having particularly excellent characteristics.

Process for the production of living (co)polymers and use of the (co)polymers

Method for preparing living polymer in the presence of phosphazenium salt

Process for preparation of substituted aromatic compound

A process for preparing phosphine oxides by reacting iminophosphoranes with phosphorus oxytrichloride by which highly purified phosphine oxides can be obtained industrially in a higher yield. Specifically, phosphine oxides are prepared in such a manner that iminophosphoranes are reacted with phosphorus oxytrichloride using an aprotic organic solvent with permittivity 2.2 or more at 20&deg; C. as a solvent under special reaction conditions to give a liquid reaction product containing phosphine oxides and aminophosphonium chlorides which are yielded as a by-product at the same time as the phosphine oxides, and the above described chlorides are removed from the above described liquid reaction product by a solid-liquid separation process, and the solution having been subjected to the solid-liquid separation process is washed with water.

Process for preparing phosphine oxides and process for purifying the same

An epoxy-resin composition comprising (A) an at least bifunctional epoxy compound and/or an at least bifunctional epoxy resin, (B) an at least bifunctional ester-containing compound and/or an at least bifunctional ester-containing resin as a curing agent, 10 to 100% of whose hydroxy groups are esterified with aliphatic or aromatic acyl groups, and (C) an accelerating agent, the accelerating agent essentially containing a phosphine oxide represented by general formula (1):

Epoxy-resin composition and use thereof

An epoxy-resin composition comprising (A) an at least bifunctional epoxy compound and/or an at least bifunctional epoxy resin, (B) a curing agent, and (C) an accelerating agent, the accelerating agent essentially containing a phosphine oxide represented by general formula (1);

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Sodegaura, Japan

Tadahito Nobori