Sumitomo Seika Chemicals Co., Ltd.

Japan Advanced Institute of Science and Technology

Osaka Municipal Technical Research Institute

Tomoki Kawakita

Nobutaka Fujimoto

Shigeki Hamamoto

Kiyoshi Nishioka

Masato Fujikake

Tatsuya Shimoda

Shinji Kobayashi

Satoshi Inoue

Masatoyo Yoshinaka

Mitsutaka Tabata

Yasuhiro Nawata

Yuji Kinpara

Masami Nakamoto

Mari Yamamoto

Yukiyasu Kashiwagi

Toshinobu Ohno

Kenya Matsuda

Koh-Hei Nitta

Makiko Nakahara

Ryou Miyabara

Nishioka Kiyoshi

The invention provides an oxide semiconductor layer that has less cracks and is excellent in electrical property and stability, as well as a semiconductor element and an electronic device each including the oxide semiconductor layer. The invention provides an exemplary method of producing an oxide semiconductor layer, and the method includes the precursor layer forming step of forming, on or above a substrate, a layered oxide semiconductor precursor including a compound of metal to be oxidized into an oxide semiconductor dispersed in a solution including a binder made of aliphatic polycarbonate, and the annealing step of heating the precursor layer at a first temperature achieving decomposition of 90 wt % or more of the binder, and then annealing the precursor layer at a temperature equal to or higher than a second temperature (denoted by X) that is higher than the first temperature, achieves bonding between the metal and oxygen, and has an exothermic peak value in differential thermal analysis (DTA).

Oxide semiconductor layer and production method therefor, oxide semiconductor precursor, oxide semiconductor layer, semiconductor element, and electronic device

This invention provides a polyolefin-based resin composition excellent in mechanical strength and elasticity. The polyolefin-based resin composition comprises a polyolefin-based resin, and, per 100 parts by mass of the polyolefin-based resin, 0.05 to 10 parts by mass of an aliphatic polycarbonate resin and 0.01 to 2 parts by mass of an acid modified polypropylene.

Polyolefin-based resin composition

The present invention provides a metal paste composition which can obtain the calcined bodies having low volume resistivity in a wiring substrate after calcining. More specifically, the present invention provides a metal paste composition comprising a metal, an aliphatic polycarbonate, and an organic solvent.

Metal paste composition

A process for producing a water-absorbent resin particle comprising subjecting a water-soluble ethylenically unsaturated monomer to a reverse phase suspension polymerization, characterized in that the process for producing a water-absorbent resin particle comprises the steps of (A) subjecting the water-soluble ethylenically unsaturated monomer to a first-step reverse phase suspension polymerization in a hydrocarbon-based solvent using a water-soluble radical polymerization initiator in the presence of a surfactant and/or a polymeric protective colloid, and optionally an internal crosslinking agent; (B) carrying out at least one step of the procedures of adding an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a water-soluble radical polymerization initiator and optionally an internal crosslinking agent to a reaction mixture after the termination of the first-step reverse phase suspension polymerization in a state that the surfactant and/or the polymeric protective colloid is dissolved in the hydrocarbon-based solvent, and subsequently subjecting the mixture to a reverse phase suspension polymerization; and (C) post-crosslinking the resulting water-absorbent resin.

Process for production of water-absorbing resin particles

Carboxyl group-containing polymer particles giving a neutralized viscous liquid being excellent in gel appearance and transparency. Carboxyl group-containing polymer particles comprising 55 to 94% by volume of water-swelled gel particles having a particle diameter of less than 50 &#x3bc;m when the carboxyl group-containing polymer particles are dispersed and swelled in water in a concentration of 0.5% by weight, and 6 to 45% by volume of water-swelled gel particles having a particle diameter of at least 50 &#x3bc;m when carboxyl group-containing polymer gel particles are dispersed and swelled in water in a concentration of 0.5% by weight.

Particles of carboxylated polymer

A carboxyl group-containing polymer composition comprising 100 parts by weight of a carboxyl group-containing polymer (A) prepared by copolymerizing an &#x3b1;,&#x3b2;-unsaturated carboxylic acid (a) with a compound (b) having at least two ethylenic unsaturated groups; and 0.01 to 20 parts by weight of at least one compound (B) selected from an ester (c) obtained from a polyhydric alcohol and a fatty acid, and an alkylene oxide adduct of an ester (d) obtained from a polyhydric alcohol and a fatty acid. Since the carboxyl group-containing polymer composition is excellent in the solubility in water and gives the aqueous solution excellent thickening property, the polymer composition can be suitably used as a thickener for various aqueous solutions.

Carboxylated polymer composition

A polymer composition containing carboxyl group which is excellent in water solubility, thickening properties and flow characteristics. This composition comprises (A) a cross-linked polymer comprising (a) an &agr;,&bgr;-unsaturated carboxylic acid and (b) a compound having at least two ethylenically unsaturated groups, and (B) at least one polymer selected from among polymers comprising vinylpyrrolidone as an essential monomer and polyethylene oxide.

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Himeji, Japan

Tomoki Kawakita