Abstract: The present invention provides a coating film having a structure represented by the following general formula (1) (in the formula, R11 is a residue formed by removing one isocyanate group from a polyisocyanate, and R12 is an alkyl group or an alkoxy group having 2 to 12 carbon atoms, R13 is a residue formed by removing one hydroxyl group from a polyol), wherein a König 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.

Abstract: The present invention provides a coating film having a structure represented by the following general formula (1) (in the formula, R11 is a residue formed by removing one isocyanate group from a polyisocyanate, and R12 is an alkyl group or an alkoxy group having 2 to 12 carbon atoms, R13 is a residue formed by removing one hydroxyl group from a polyol), wherein a König 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.

Abstract: 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 R11, R21, R31 and R41 each independently represent an organic group, at least one of the pluralities of R11, R21, R31 and R41 is a group represented by general formula (V) (wherein each of the plurality of Y1 independently represents a single bond or the like, R51 represents a hydrogen atom or the like, and the wavy line indicates a bonding site) or the like, and in general formula (III), R32 represents a residue in which one hydroxyl group has been removed from a monohydric or polyhydric alcohol).

Abstract: A polyisocyanate composition includes a polyisocyanate having an isocyanurate group, derived from one or more types of diisocyanates selected from the group consisting of an aliphatic diisocyanate and an alicyclic diisocyanate, UV absorption peaks of a trimeric equivalent of the diisocyanate and a tetrameric equivalent of the diisocyanate being present in a spectrum of the polyisocyanate composition measured by gel permeation chromatography, the ratio ((B)/(A)) of the height (B) of the UV absorption peak of the tetrameric equivalent of the diisocyanate to the height (A) of the UV absorption peak of the trimeric equivalent of the diisocyanate being 0.01 to 3, and the content of a volatile component produced from storage for three months at 60° C. being 0.3% by mass or less with respect to the total mass of the polyisocyanate composition prior to storage, the volatile component having been removed from the polyisocyanate composition in advance.

Abstract: 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 R11, R21, R31 and R41 each independently represent an organic group, at least one of the pluralities of R11, R21, R31 and R41 is a group represented by general formula (V) (wherein each of the plurality of Y1 independently represents a single bond or the like, R51 represents a hydrogen atom or the like, and the wavy line indicates a bonding site) or the like, and in general formula (III), R32 represents a residue in which one hydroxyl group has been removed from a monohydric or higher alcohol).

Abstract: 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 (?2), 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).

Abstract: 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 (?2), 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.