Agc Inc.

Asahi Glass Company, Limited

Other

Kabushiki Kaisha Riken

Tatsuya Miyajima

Yasushi Yamaki

Takuo Nishio

Osamu Saito

Satoru Hommura

Takashi Shibuya

Atsushi Funaki

Hiroki Kamiya

Shinichiro Watanabe

Jun Kato

Eiichi Nishi

Shinya Saito

Nobuhiro Shinohara

Kyoko Yamamoto

Motoichi Ohtsu

Hiroyuki Watabe

Yoshihito Narita

Naoko Sumi

Yasuhiro Kunisa

Yuichiro Takezawa

Susumu Teruyama

Kosuke Sumikura

Hideho Hisada

Koji Akutsu

Shintaro Hayabe

Osamu Homma

The present invention provides an ion exchange membrane can improve the current efficiency of a redox flow battery without a drop in voltage efficiency, when used in the redox flow battery. The ion exchange membrane of the present invention is an ion exchange membrane comprising a fluorinated polymer having sulfonic acid functional groups, wherein the difference (D−Dc) between the distance D between ionic clusters and the diameter Dc of ionic clusters as measured by the small angle X-ray scattering is 0.60 nm or more, and the ion exchange capacity of the fluorinated polymer is 0.95 meq/gram dry resin or more.

Ion exchange membrane suitable for redox flow battery

An ion exchange membrane containing a fluorinated polymer, wherein in a case where by Raman spectroscopy, polarized light orthogonal to the thickness direction of the ion exchange membrane is irradiated to obtain a spectrum chart, whereby the ratio of the peak area a2 of Raman shift 680 to 760 cmto the peak area al of Raman shift 1,025 to 1,095 cmis taken as A1, and by Raman spectroscopy, to a cross section in the thickness direction of the ion exchange membrane, polarized light parallel with the thickness direction is irradiated to obtain a spectrum chart, whereby the ratio of the peak area b2 of Raman shift 920 to 1,025 cmto the peak area b1 of Raman shift 1,025 to 1,095 cmis taken as B1, B1/A1 is at least 1.05.

Ion exchange membrane and method for producing dry ion exchange membrane

To provide a liquid composition with which a catalyst layer and a polymer electrolyte membrane will hardly be broken at the time of their formation and a method for producing the liquid composition; and a method for producing a membrane/electrode assembly by which a catalyst layer and a polymer electrolyte membrane will hardly be broken at the time of their formation. A liquid composition comprising a polymer having ion exchange groups, water and an organic solvent, wherein

Liquid composition, method for producing it, and method for producing membrane/electrode assembly

A side rail () is formed in a sprit ring shape with an opening () and to be mounted on a space expander () in an annular shape to constitute, together with the space expander (), a multi-piece oil ring () used in an internal combustion engine. The side rail () includes an outer peripheral surface () facing radially outward, an inner peripheral surface () facing radially inward, a first axial surface () facing a crankcase, a second axial surface () facing a combustion chamber and parallel to the first axial surface (), and a protrusion () formed on the outer peripheral surface () in a position offset from an intermediate position between the first axial surface () and the second axial surface () toward the first axial surface () and protruding radially outward from the outer peripheral surface ().

Side rail

An organo polysiloxane to improve the abrasion and weather resistance of a hard coating layer obtained from a silicone-type hard coating composition. The hard coating composition contains a first organo polysiloxane having silicone-containing bond units selected from the group consisting of R&#x2014;Si(&#x2014;OX)(&#x2014;O*&#x2014;), R&#x2014;Si(&#x2014;OX)(&#x2014;O*&#x2014;)and R&#x2014;Si(&#x2014;O*&#x2014;)) and a second organo polysiloxane having the same, where the second organo polysiloxane has a weight average molecular weight of 1/10 to 1/1.5 times that of the first organo polysiloxane. Further, a resin substrate having a hard coating layer made of a cured product of the hard coating composition that has improved abrasion and weather resistance. For resin substrates used in a bent state, the hard coating layer also improves the cracking resistance associated with mechanical stress.

Organo polysiloxane, hard coating composition, and resin substrate having hard coating layer

A fluorocopolymer which comprises (A) polymerized units based on tetrafluoroethylene, (B) polymerized units based on ethylene and (C) polymerized units based on a compound represented by CH &boxH;CX(CF ) Y (wherein each of X and Y which are independent of each other, is a hydrogen atom or a fluorine atom), wherein the molar ratio of (A)/(B) is from 20/80 to 80/20, and the molar ratio of (C)/((A)&plus;(B)) is from 1/1000 to 15/100, and which has a volume flow rate of from 1 to 1000 mm /sec. The fluorocopolymer has a low fuel permeability coefficient and is excellent in the fuel barrier properties.

Fluorocopolymer

In a probe microscope for causing a sample and a tip portion of a probe on the sample side to approach each other, detecting an interaction between the sample and the sample-side probe tip portion , and obtaining surface information of the sample from the interaction, the probe being a flexible needle-like probe; the probe microscope comprises vibrating means capable of rotating the probe while flexing the sample-side tip portion thereof so as to draw a circle having a size corresponding to an increase and decrease in the interaction between the sample surface and the tip portion , and detecting means for detecting the increase and decrease in the size of the circle drawn by the sample-side probe tip portion due to the interaction and obtaining, from the increase and decrease in the size of the circle, information about the distance between the sample and the sample-side probe tip portion

Rotating probe microscope

Growing community of inventors

Tokyo, Japan

Tatsuya Miyajima