Sumitomo Chemical Company, Limited

Ryuma Kuroda

Satoshi Hanada

Taiichi Sakaya

Atsuhiro Takata

Takeshi Yamada

Mitsunori Nodono

Tadatoshi Ogawa

Kozo Kotani

Toshio Kawakita

Nobuo Oi

Shin-ichi Kumamoto

Hiroaki Takahata

Kyoko Hino

Tatsuhiro Nagamatsu

Hiroyuki Kurita

Kentaro Masui

Kaori Tsubouchi

Shin Saito

Toshihiko Suzuki

Shin-Ichi Kumamoto

Disclosed is a porous electrode comprising a porous film (A) with through pores and an electrically conducting material selected from the group consisting of conductor and semiconductor, the porous film (A) having an average pore size dof from 0.02 to 3 &#x3bc;m and a porosity of from 40 to 90%, the electrically conducting material being filled in the through pores of the porous film (A). A dye-sensitized solar cell and an electric double layer capacitor including the porous electrode as a constituent are also disclosed.

Porous electrodes, devices including the porous electrodes, and methods for their production

A process for producing a polymer electrolyte emulsion having the following steps (1) and (2) is provided. Step (1): a step of dissolving a polymer electrolyte in a solvent comprising a good solvent for the polymer electrolyte to prepare a polymer electrolyte solution having a polymer electrolyte concentration of 0.1 to 10% by weight. Step (2): a step of mixing the polymer electrolyte solution 10 obtained in the step (1), and a poor solvent for the polymer electrolyte at a ratio of 4 to 99 parts by weight of the poor solvent based on 1 part by weight of the polymer electrolyte solution. In addition, a process for producing a polymer 15 electrolyte emulsion comprising separating a polymer electrolyte dispersion in which a polymer electrolyte particle is dispersed in a dispersing medium, with a membrane is provided.

Process for producing polymer electrolyte emulsion

Disclosed is a phase retardation film including two outer layers facing each other, and an inner layer interposed between the outer layers, each of the outer layers are formed of a non-styrene polymeric material and the inner layer being formed of a polymeric material with a negative intrinsic birefringence, wherein the phase retardation film has a negative intrinsic birefringence and a Haze from 0% to 1%. A liquid crystal display device including the phase retardation film is also disclosed.

Phase retardation film and liquid crystal display device including the same

Disclosed is a method for producing a laminated porous polyolefin film, the method comprising steps of:

Method for producing laminated porous polyolefin film and laminated porous polyolefin film

A film-like materials of resin manufacturing method for producing a film-like material made of a resin by rolling a thermoplastic resin material containing a thermoplastic resin using a molding apparatus comprising first rotation molding members composed of a pair of rollers, wherein the method is characterized in that the rotation molding is carried out under the conditions satisfying the following inequalities of the line contact pressure P (kN/m) applied to the thermoplastic resin, the peripheral velocity R (m/sec) of the rollers of the first rotation molding members, and the thickness H (m) of the film-like material made of the resin after rolling. (formula 1) 3&#xd7;9.8&#x2266;P (formula 2) 3&#xd7;9.8&#xd7;10&#x2266;P/(R/H)&#x2266;2&#xd7;9.8&#xd7;10, wherein the reference character P denotes the line contact pressure P (kN/m), the reference character R denotes the peripheral velocity (m/sec) of the rotation molding members, and the reference character H denotes the thickness (m) of the film-like material made of the resin after rolling.

Manufacturing method of film-like materials of resin and film-like materials of resin

The polyolefin [A] has a weight average molecular chain length of 2850 nm or longer and a density &#x3c1;(g/cm), the polyolefin wax [B] has a weight average molecular weight of 700&#x2013;6000 and a density &#x3c1;(g/cm), the polyolefin and the polyolefin wax are incorporated at [A]/[B]=90/10&#x2013;50/50 (ratio by weight), and the densities &#x3c1;and &#x3c1;satisfy the following conditions: 0.92&#x2266;&#x3c1;&#x2266;0.94, 0.91&#x2266;&#x3c1;&#x2266;0.93, &#x2212;0.03&#x2266;(&#x3c1;)&#x2266;0.03.

Polyolefin series resinfilm, composition for preparing the same, process for preparing the composition for preparing the same, and apparatus for preparing the same

To provide a slitting method of a battery separator-use resin film object that is less susceptible to occurrences of holes and tearing at the time of a slitting process. A slitting device, which is provided with a feeding roll 51 for feeding a film that is wound up to a role with its rotational velocity being controlled, a razor blade for slitting the film to a predetermined width, a sensor for detecting a tension of the film and winding rolls for winding the film up while controlling its tension, is used for carrying out a slitting process in a manner so as to satisfy the following conditions (1) and (2): (Condition 1) 5&#xd7;9.8&#xd7;10&#x2266;T/L&#x2266;5&#xd7;9.8&#xd7;10(Condition 2) 1&#x2266;R/T&#x2266;5 where L is a thickness (m) of the film object, R is a rotational velocity (m/min) of the feeding roll and T is a tension (N/m) of the film object after having been subjected to the slitting operation.

Method of slitting a battery separator-use resin film object and such a battery separator-use resin film object

An object of the present invention is to provide a foamed polyolefin resin sheet which exhibits a high adhesive strength when laminated with a layer formed of a saponified ethylene-vinyl ester copolymer and which still exhibits a high adhesive strength even when laminated with a layer of a thermoplastic resin having relatively low polarity such as a polyolefin resin. This object is attained by a foamed polyolefin resin sheet including a foamed polyolefin resin layer and a non-foamed surface layer formed of a thermoplastic resin composition having an A1/A2 ratio falling within a range between 1&#xd7;10and 1&#xd7;10, wherein A1 is a maximum absorbance of the infrared absorption spectrum of the thermoplastic resin composition within an infrared ray wave number region of from 1700 to 1750 cmand A2 is a maximum absorbance of the infrared absorption spectrum of the thermoplastic resin composition within an infrared ray wave number region of from 1455 to 1465 cm.

Foamed polyolefin resin sheet

An optical member comprising a polymer which is amorphous and has a glass transition temperature of not lower than 110&#xb0; C. and optical property parameters O'(&#x221e;)) and O&#x2032;(&#x221e;) that satisfy the following inequality (1),|(&#x221e;)|&#x3c;&#x2212;(&#x221e;)|+&#x2003;&#x2003;(1),is superior in its heat resistance and transparency and high in its stability of optical properties. Therefore, the optical member can be used as, for example, a constituent of optical systems in a liquid crystal display, thereby suppressing change in a display color tone depending on variation of using circumstances of the liquid crystal display.

Optical member and optical product provided therewith

To provide a polyolefin based resin film of high elastic modulus and a composition for producing a polyolefin based resin film of high elastic modulus. The polyolefin based resin film is characterized in that a polyolefin [A] having a weight average molecular chain length of 2850 nm or more and a polyolefin wax [B] having a weight average molecular weight of 700 to 6000 have been compounded in a ratio of [A]/[B]=90/10 to 50/50 (by weight) as the resin component, and 10 to 300 parts by weight of inorganic fillers have been added to 100 parts by weight of the resin component.

Polyolefin based resin film and a composition for a polyolefin type resin film

A drawn film production method including steps of drawing a crystalline thermoplastic resin film in the TD direction is characterized in that the orientation coefficient of the c-axis of the crystal of the thermoplastic resin in the film to the MD direction of the film is 0.8 or higher.

Production method of drawn film

The present invention provides a thermoplastic resin sheet having a thermoplastic resin expanded layer of which expansion ratio is in the range of 3 to 40 times, and cell wall density ratio is in the range of 2 to 20, said thermoplastic resin sheet having excellent thermal insulation property, and a container being formed from the thermoplastic resin sheet.

Thermoplastic resin sheet and container

The present invention provides a molding extrusion machine comprising a pair of delivery rolls arranged forward continuously with a die attached to the end of an extruder by which a molten resin material is extruded through the die toward a rolling part between the delivery rolls and further extruded through a pair of the delivery rolls, wherein gas-sealing molds in intimate contact with both sides at least at the top of the die at the side of the discharge opening are provided to close openings in both sides of the rolling part so that supporting parts in both sides of a pair of the delivery rolls are formed into an air-tightness keeping part by said gas-sealing molds.

Extrusion molding machine

Porous film, separator for cell, and cell

An object of the present invention is to provide a foamed polypropylene resin container for microwave cooking which is free from deformation upon cooking by a microwave oven and excellent in heat resistance. The foamed polypropylene resin container for microwave cooking of the present invention, on at least one side of a foamed polypropylene resin layer, a non-foamed layer containing 100 parts by weight of a polypropylene resin and 40 to 100 parts by weight of talc.

Growing community of inventors

Ibaraki, Japan

Ryuma Kuroda