Kao Corporation

Bridgestone Corporation

Other

Mitsubishi Chemical Corporation

Tetsuo Takano

Masaaki Tsuchihashi

Isao Nishi

Daisuke Nohara

Motoi Konishi

Kumi Fujiki

Makiko Yonemoto

Reiko Yagi

Hiromi Aso

Kazuhiro Yanagisawa

Yasuhiro Yoneda

Mitsuhiro Hamada

Kazuo Kubota

Jingo Shirasaka

Kojun Oshiro

Seichi Tahara

Satoshi Nagatsuka

An oil for a carbon fiber precursor acrylic fiber including: a hydroxybenzoate ester (A) indicated by formula (1a); an amino-modified silicone (H) indicated by formula (3e); and an organic compound (X) which is compatible with the hydroxybenzoate ester (A), in which a residual mass rate R1 at 300&#xb0; C. in thermal mass analysis in an air atmosphere is 70-100 mass % inclusive, and which is a liquid at 100&#xb0; C., and a carbon fiber precursor acrylic fiber bundle to which the oil for a carbon fiber precursor acrylic fiber is adhered. 

Oil agent for carbon-fiber-precursor acrylic fiber, oil agent composition for carbon-fiber-precursor acrylic fiber, oil-treatment-liquid for carbon-fiber-precursor acrylic fiber, and carbon-fiber-precursor acrylic fiber bundle

As an additive composition capable of improving the processability, the low loss property and the breaking resistance of a silica compounded rubber composition, and a rubber composition excellent in processability, low loss property and breaking resistance, this disclosure provides an additive composition for silica compounded rubber composition comprising a glycerin fatty acid ester, wherein: the glycerin fatty acid ester is an ester of a glycerin and two or more fatty acids, a fatty acid component which is the most among the two or more fatty acids constituting the glycerin fatty acid ester being 10 to 90 mass % of all fatty acids; and a monoester component is contained in an amount of 50 to 100 mass % in the glycerin fatty acid ester, and provides a rubber composition comprising a diene based rubber, a silica, and the additive composition for silica compounded rubber composition.

Additive composition for silica compound rubber composition, rubber composition and tire

The present invention relates to an oil agent for carbon-fiber precursor acrylic fiber, including at least one type of compound selected from groups of a hydroxybenzoate (Compound A), a cyclohexanedicarboxylic acid (Compound B and C), a cyclohexanedimethanol and/or a cyclohexanediol and a fatty acid (Compound D and E) and an isophoronediisocyanate-aliphatic alcohol adduct (Compound F), an oil composition for carbon-fiber precursor acrylic fiber, a processed-oil solution for carbon-fiber precursor acrylic fiber, and a method for producing a carbon-fiber precursor acrylic fiber bundle, and a carbon-fiber bundle using the carbon-fiber precursor acrylic fiber bundle.

Oil agent for carbon fiber precursor acrylic fiber, oil composition for carbon fiber precursor acrylic fiber, processed-oil solution for carbon-fiber precursor acrylic fiber, and method for producing carbon-fiber precursor acrylic fiber bundle, and carbon-fiber bundle using carbon-fiber precursor acrylic fiber bundle

Provided is a rubber composition containing a high stratified or tabular clay mineral content, wherein the dispersion of the stratified or tabular clay minerals is improved, thus reducing air permeability and improving flex resistance. Also provided is a tire using the rubber composition. An example of the rubber composition is a rubber composition containing a rubber component (A), a stratified or tabular clay mineral (B), and a glycerin fatty acid ester composition (C).

Rubber composition and tire using same

In order to provide a rubber composition which is improved in dispersibility of silica in rubber compositions and can be improved as well in heat build-up and processability without causing increasing a viscosity of unvulcanized rubber and retarding a vulcanization rate, and a tire prepared by using the same, the rubber composition is endowed with a constitution in which at least one rubber component selected from natural rubber and/or diene base synthetic rubbers is compounded with a white filler and at least one of monoalkanolamides represented by the following Formula (I): [in Formula (I) described above, Rrepresents an alkyl group or an alkenyl group having 1 to 13 carbon atoms, and the alkyl group and alkenyl group may be any of a linear type, a branched type and a cyclic type; and Rrepresents a hydroxyalkyl group or a hydroxyalkyl group having an oxyalkylene unit].

Rubber composition and tire produced by using the same

Rubber composition which improves dispersibility of silica and enhances processability by reducing viscosity of an unvulcanized rubber and which suppresses rubber scorching, inhibits shrinkage without delaying a vulcanization rate and improves a heat resistance, and a tire prepared by using the above rubber composition. Rubber composition prepared by blending at least one rubber component selected from a natural rubber and/or a diene base synthetic rubber with silica and a glycerin fatty acid ester composition, wherein a blend amount of the glycerin fatty acid ester composition is 0.5 to 15 parts by mass based on 100 parts by mass of the rubber component; the fatty acid has 8 to 28 carbon atoms; the glycerin fatty acid ester composition contains glycerin fatty acid monoester and glycerin fatty acid diester; and a content of the glycerin fatty acid monoester in the glycerin fatty acid ester composition is 85% by mass or less.

Provided is a rubber composition capable of preventing discoloration due to an amine-based antiaging agent and wax without deteriorating the ozone resistance not only in cases where the rubber composition is used in side wall portions of tires but also in cases where the rubber composition is used in tread portions of tires. The rubber composition comprises at least one rubber component selected from a dienic synthetic rubber and a natural rubber and, as incorporated therein, at least one nonionic surfactant selected from specific compounds.

Rubber composition, method for preventing discoloration of rubber composition, and tire

In order to provide a rubber composition in which dispersibility of silica is improved and in which a viscosity of an unvulcanized rubber is lowered and a heat build-up improving effect of a vulcanized rubber is well exerted, and a tire prepared by using the rubber composition, the rubber composition is endowed with a constitution in which 100 parts by mass of at least one rubber component selected from natural rubber and/or diene base synthetic rubbers are compounded with 55 to 200 parts by mass of silica and 0.5 to 15 parts by mass of at least one of alkanolamines represented by the following Formula (I): [in Formula (I), Rrepresents an alkyl group or an alkenyl group having 1 to 24 carbon atoms, and the above alkyl group and alkenyl group may be any of a linear group, a branched group and a cyclic group; m and n represent an average addition molar number, and m and n are numerical values which represent m+n=1 to 20].

Rubber composition and tire using the same

Provided is a rubber composition comprising an inorganic filler, a compound having at least one group A reacting with a rubber and two or more groups B adsorbing on the inorganic filler described above in the same molecule, a compound having the group A reacting with a rubber and an amino group in the same molecule or acrylate or methacrylate having a specific structure and further comprising, if necessary, a silane coupling agent. This makes it possible to provide a rubber composition which is excellent in the dispersibility of an inorganic filler, so that it does not elevate a viscosity of a non-vulcanized rubber and does not damage the processability and which does not bring about roughening on the surface of a rubber and is improved in a storage modulus.

Rubber composition

An additive for a rubber composition consists essentially of an ester of (i) an aliphatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group in its molecule, or an ester of (ii) an aromatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group bonded to an aromatic ring in its molecule. And also, it relates to an additive composition, a rubber composition and a pneumatic tire using such an additive for a rubber composition.

Additive for rubber composition, additive composition for rubber composition, rubber composition and tire

The present invention provides a spacer for a liquid crystal display which is excellent in light shielding properties, does not suffer from fading even after the lapse of a long period, thus being excellent in long-term reliability, and has satisfactory strengths and a liquid crystal display made by using the spacer. The above spacer is composed of colored fine particles prepared by copolymerizing a polymerizable anthraquinone dye having at least one ethylenically unsaturated bond in the molecule with an ethylenically unsaturated monomer component in an aqueous medium.

Spacer for liquid crystal display and liquid crystal display made by

A contact assembly for a microswitch has a contact material inserted into and calked in a hole formed in a base material which is a copper alloy having iron phosphide crystallized therein and having a chemical composition of 0.025 to 0.040% by weight of phosphorus, 0.05 to 0.15% by weight of iron and the rest of copper.

Miniaturized electric contact assembly for microswitch

Rectangular electric contacts are produced by forming rectangular holes in base pieces, inserting into the rectangular holes contact pieces of a profile identical to the profile of the rectangular holes and pressing the portions of the contact pieces protruding out of the rectangular holes in the opposite directions. In consequence of the pressing, the contact pieces are laterally expanded to fill up the rectangular holes in the base pieces and the portions of the contact pieces protruding from the rectangular holes are crushed sideways to give rise to extended portions somewhat greater in size than the rectangular holes and similar in shape thereto. The extended portions serve as points of contact.

Growing community of inventors

Wakayama, Japan

Tetsuo Takano