Asahi Kasei Kabushiki Kaisha

Koichiro Azuma

Hiroshi Miyazawa

Satoshi Hashimoto

Yuichi Miwa

Katsuhiro Fujimoto

Keitaro Ameyama

Kimio Imaizumi

Masatoshi Ikemi

Yoshijiro Harada

Eiko Tanaka

Masatsugu Higashi

Tomoharu Yoshinuma

The present invention provides a coating film having a structure represented by the following general formula (1) (in the formula, Ris a residue formed by removing one isocyanate group from a polyisocyanate, and Ris an alkyl group or an alkoxy group having 2 to 12 carbon atoms, Ris a residue formed by removing one hydroxyl group from a polyol), wherein a K&#xf6;nig hardness of the coating film is 20 or more, in an SS curve measurement of a tensile test, the coating film has an elastic deformation region and a plastic deformation region, and in the SS curve measurement, a stress at an inflection point stress between the elastic deformation region and the plastic deformation region is 5 MPa or more. 

Coating film

The present invention provides a polyisocyanate composition and the like that contain a polyisocyanate compound represented by general formula (I), (II), (III) or (IV) (wherein the pluralities of R, R, Rand Reach independently represent an organic group, at least one of the pluralities of R, R, Rand Ris a group represented by general formula (V) (wherein each of the plurality of Yindependently represents a single bond or the like, Rrepresents a hydrogen atom or the like, and the wavy line indicates a bonding site) or the like, and in general formula (III), Rrepresents a residue in which one hydroxyl group has been removed from a monohydric or polyhydric alcohol). 

Polyisocyanate composition, blocked polyisocyanate composition, hydrophilic polyisocyanate composition, coating material composition, and coating film

A separator for electricity storage devices which comprises: a base comprising a porous film; and a thermoplastic polymer arranged on at least one surface of the base. The thermoplastic polymer has a dispersion (&#x3c3;), defined by the following numerical equation using the areas (Si) of Voronoi polygons obtained by Voronoi tessellation, of 0.01-0.7. (In the equation, Si is the measured area of each Voronoi polygon, m is an average of the measured areas of the Voronoi polygons, and n is the total number of the Voronoi polygons).

Separator for electricity storage device

Growing community of inventors

Tokyo, Japan

Koichiro Azuma