Osaka Municipal Government

Orient Chemical Industries, Ltd.

Other

Wako Pure Chemical Industries, Inc.

Nippon Kagaku Yakin Co., Ltd.

Masayuki Shimada

Yasuyuki Agari

Kazuaki Sukata

Motoomi Arakawa

Shigehiro Sasao

Akira Ueda

Nobutaka Shimamura

Kozo Ishihara

Kiyotaka Matsukawa

Hideo Takeuchi

Yoichiro Makimura

Tsuneo Kamiyahata

Yoshikazu Inada

Manabu Shioyama

Disclosed is a copolymer comprising a polyethylene segment which is a main chain; a reactive silicon-containing group which is a side group of the polyethylene segment; and a polycondensation segment bonded to the polyethylene segment, which is a part of the main chain together with the polyethylene segment or a side chain with respect to the polyethylene segment. There are provided a condensation polymer having many reactive silicon-containing groups with respect to one molecule and an organic-inorganic hybrid polymeric material having superior properties such as strength, heat resistance, weather resistance and chemical resistance by using the polymer.

Copolymer having reactive silicon-containing group and organic-inorganic hybrid polymeric material

A resin composition having high thermal conductivity and excellent moldability and a method of producing the same is provided. The composition includes 40 vol % or more of a matrix resin, 10 to 55 vol % of a thermally conductive filler dispersed in the matrix resin and the balance of a low-melting point alloy connecting the thermally conductive filler to each other and having a melting point not higher than 500&#xb0; C. The proportion of the volume ratio of the low-melting point alloy to that of the thermally conductive filler is set in a range from 1/30 to 3/1.

Resin composition with high thermal conductivity and method of producing the same

According to the present invention, organic-inorganic hybrid polymer materials with compositional gradient, and processes for preparing the same are provided. In the organic-inorganic hybrid polymer materials with compositional gradient, formation of cracks, removal of surface, or deformation such as warp and distortion, under heat shock or upon aging, hardly occurs. The organic-inorganic hybrid polymer materials with compositional gradient are comprised of an organic polymer component and a metal oxide component which are covalently bonded each other, characterized in that concentration of the organic polymer component, or of the metal oxide component is increased or decreased in the direction of thickness of the material.

Organic-inorganic hybrid polymer materials with compositional gradient, and processes for preparing the same

Disclosed is a polymeric material obtained by melt-kneading, using a kneading apparatus, a resin composition containing an organic polymer having no metal alkoxy group and a metal alkoxide compound. The organic-inorganic hybrid polymeric material, a polymeric material containing this component, and a molded products obtained therefrom are suitable for high-performance and high-function plastic applications. Simple and practical processes for producing them at high productivity and at low cast are also disclosed.

Polymeric material, molded product and methods for their production

According to the present invention, there is provided an organic-inorganic composite material which shows high mechanical strength and high water resistance, requires low cost for preparation, and is preferred to be used as a high performance and a high functional plastic material. The present invention provides an organic-inorganic composite material which comprises a matrix of an organic polymer (E), metal oxide particles (C) dispersed uniformly in the organic polymer (E), and a surface modifier for allowing the metal oxide particles (C) to disperse uniformly in the organic polymer (E), wherein the surface modifier is another organic polymer (A) which has a functional group formable of a covalent bond to a surface of the metal oxide particles (C).

Organic-inorganic composite material and process for preparing the same

A functional block copolymer useful as a compatibilizing agent for a blend of a condensation polymer and vinyl polymer comprises segments of a condensation polymer and a vinyl polymer derived from a reactive functional group-containing monomer or a functions-imparting monomer such as ultraviolet absorption or flame retardant functions. The block copolymer can further include a segment of a lower cohesive energy polymer. The condensation or vinyl polymer segment, or the lower cohesive energy polymer segment contains azo or peroxide groups which act as a polymerization initiator for the copolymerization of the vinyl monomer forming the vinyl polymer segment.

Block copolymer with condensation or vinyl polymer, functions imparting, and lower cohesive E segments

The present invention is made to provide an organic-inorganic hybrid material, a surface of which is supplied with a layer having photo-catalysis, without photo-degradation of the substrate. The present invention provides an organic-inorganic hybrid material comprising a substrate, an intermediate layer and a photo-catalysis layer which are sequentially formed on a surface of the substrate wherein, the intermediate layer is composed of an organic-inorganic hybrid polymer material in which an organic polymer component and a metal oxide component are covalently bonded each other, which is obtained by hydrolyzing and polycondensing a solution or a wet gel which comprises an organic polymer having an alkoxymetal group as a functional group or an organic polymer having a functional group reactable with a metal alkoxide compound, and a metal alkoxide compound, and the photo-catalysis layer is composed of metal oxides having photo-catalysis.

Organic-inorganic hybrid materials and processes for preparing the same

According to the present invention, the characteristics of an inorganic material are suitably supplied to an organic material, and the characteristics of an organic material are suitably supplied to an inorganic material. The organic-inorganic hybrid polymer is obtained by the process in which a polymer having a polycarbonate and/or a polyarylate moiety as a main frame and having a metal alkoxide group as a functional group, is hydrolyzed and polycondensed to form crosslinkages. Another process is that in which a polymer having a polycarbonate and/or a polyarylate moiety as a main frame and having a metal alkoxide group as a functional group, and a metal alkoxide compound are cohydrorized and copolycondensed to form crosslinkages.

Organic-inorganic hybrid polymer material and process for preparing the

An unsaturated polyester resin composition contains a silicone-containing macro-azo-initiator and/or a silicone-containing block copolymer obtained by copolymerizing the silicone-containing macro-azo-initiator with a nonionic monomer.

Growing community of inventors

Sakai, Japan

Masayuki Shimada