Showa Denko K.k.

Zeon Corporation

Showa Denko Kabushiki Kaisha

Showda Denko K.k.

Keisuke Ohta

Kazufumi Kai

Hiroshi Uchida

Shigetaka Hayano

The Ban Hoang

Yasuyuki Oyama

Yasuo Tsunogae

Kazuhiko Ooga

Hirotoshi Kamata

Tsuneo Tajima

Yasushi Kadowaki

Hiroyuki Yonemaru

Tetsuya Ishii

Yoshihiro Honda

Syunichi Nagamatsu

A polyether polymer composition containing 200 parts by weight or more of a metal-containing powder per 100 parts by weight of a polyether polymer having an oxirane monomer unit is provided. The present invention can provide a polyether polymer composition that is capable of appropriately showing various properties of the metal-containing powder such as high heat conductivity and high electrical conductivity and that also has excellent long-term stability.

Polyether polymer composition and sheet

A polyether polymer composition containing 50 parts by weight or more of a filler per 100 parts by weight of a polyether polymer composed of 10 to 200 oxirane monomer units is provided. The present invention can provide a polyether polymer composition that is capable of appropriately showing various properties of the filler such as high heat conductivity and high electrical conductivity and that also has excellent long-term stability.

Polyether polymer composition

The present invention is a polyether-based polymer composition includes: a polyether-based polymer including an oxirane monomer unit and having one cationic group substantially only at one terminal of a polymer chain, and a nanocarbon material. The polyether-based polymer composition of the present invention can be suitably used, for example, as a bucky gel or as a master batch for preparing a nanocarbon material aqueous dispersion in which a nanocarbon material is favorably dispersed.

Polyether-based polymer composition

A polyether compound containing oxirane monomer units in an average number per molecule of 5 to 200, wherein the polyether compound has a cationic group and cross-linkable group in the oxirane monomer units, and a cross-linkable composition containing this polyether compound and a cross-linking agent which enables cross-linking of the cross-linkable groups of the polyether compound are provided.

Polyether compound, cross-linkable composition, and electrolyte

The present invention relates to an N-(1-hydroxyethyl)carboxamide compound represented by formula (1) (in the formula, Rand Rrepresent independently from each other a hydrogen atom or an alkyl group having 1 to 4 carbon atoms except for a case where Rand Rrepresent a hydrogen atom at the same time) and a method for producing the same; a method for producing an N-(1-alkoxyethyl)carboxamide compound; a method for producing an N-vinyl carboxylic acid amide compound; and a method for producing an N-vinyl carboxylic acid amide (co)polymer. An N-(1-alkoxyethyl)carboxamide compound can be obtained by reacting N-(1-hydroxyethyl)carboxamide compound with alcohol in the presence of an acid catalyst, and an N-vinyl carboxylic acid amide compound, which is a monomer of the N-vinyl carboxylic acid amide (co)polymer, can be obtained by thermally decomposing or catalytically decomposing the N-(1-alkoxyethyl)carboxamide compound.

N-(1-hydroxyethyl) carboxamide compound and process for producing same

A radically polymerizable compound having a group represented by formula (1) (In the formula, Rto Reach independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, X represents an alkylene group having 1 to 4 carbon atoms.) and a radically polymerizable double bond and a composition for an optical material comprising the same have a high refractive index and excellent transparency and are hard to be oxidized in thermal curing and useful as an optical material with little tinting.

Radically polymerizable compound having a cyclic dithiocarbonate group

This invention relates to a novel polymer compound, and a process for preparing the same and a radical polymerizable, curable composition using the same. The polymer of the invention has in the side chain thereof a structure represented by the formula (1): wherein R1 each independently represents at least one or more organic residue selected from the group consisting of an alkylene group, a branched alkylene group, a cycloalkylene group, an aralkylene group and an arylene group, R2 each independently represents at least one or more organic residue selected from the group consisting of an alkylene group, a branched alkylene group, an alkenylene group, a branched alkenylene group, a cycloalkylene group, a cycloalkenylene group and an arylene group, and n represents an integer of 0 to 20. 

Curable polymer compound

The invention relates to a radically polymerizable sulfur-containing compound having a group represented by formula (1) and at least one selected from among groups represented by formulae (2) to (4), a radically polymerizable sulfur-containing polymer obtained by subjecting the compound to cationic ring-opening (co)polymerization, production process thereof, a composition containing the sulfur-containing compound and/or the sulfur-containing polymer, and a cured product obtained from the composition . . . (1)(2)(3)(4) . . . (Rto Reach independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.) The cured product obtained from the radically polymerizable sulfur-containing compound and the radically polymerizable sulfur-containing polymer having a high refractive index is useful as an optical material, especially for lens material. 

Radically polymerizable sulfur-containing compound and radically polymerizable sulfur-containing polymer

A polymerizable compound represented by formula (1): wherein each Rindependently represents at least one organic residue selected from the group consisting of alkylene groups, branched alkylene groups, cycloalkylene groups and arylene groups, Rrepresents an organic residue derived from an alcohol compound, a phenol compound or a carboxylic acid compound, n represents an integer of 0 to 20, a production process of the polymerizable composition, a composition using the polymerizable compound, a cured product obtained by curing the composition and a production process of the cured product. The polymerizable compound exhibits a good adhesive property to a substrate such as glass and is imparted with radical polymerizability to enable heat curing and/or active energy ray curing. 

Polymerizable compound, polymerizable composition and cured product containing the compound

This invention is to provide a polymerizable composition having excellent curability and surface hardness, and a cured product thereof. A novel fumarate derivative having two or more fumarate groups within one molecule and ensuring copolymerizability with the terminal alkenyloxy group, a method for producing the derivative, a polymerizable composition containing the derivative, and a cured product thereof are provided.

Growing community of inventors

Oita, Japan

Keisuke Ohta