Abstract: A binder comprising; a carboxyl group-containing polymer having a weight average molecular weight of 2000 to 6000 g/mol and a polyhydric alcohol, wherein a molar ratio of a carboxylic acid group of the carboxyl group-containing polymer and the polyhydric alcohol is 79:21 to 35:65, and wherein the polyhydric alcohol comprises a polyhydric alcohol having a viscosity of 900 mPa·s or less at 20° C.

Abstract: Provided is a binder including a polymer having a hydroxyl group, wherein the polymer includes a structural unit derived from an unsaturated carboxylic acid-based monomer, and a structural unit derived from at least one hydroxyl group-containing monomer selected from the group consisting of 2-hydroxyethyl acrylate, allyl alcohol, and isoprenol, the content of the structural unit derived from the hydroxyl group-containing monomer is 5 mol% to 50 mol% based on the total amount of the polymer, the weight average molecular weight of the polymer is 1000 to 5000, and the pH is 6.5 or lower.

Abstract: The objective of the present invention is to, in a resin film containing an anti-blocking agent (organic polymer particles), achieve both a reduction in friction of the film and suppression of dropping-off of particles from the film surface. The laminated resin film of the present invention has a base film layer and a surface layer, and the surface layer contains organic polymer particles serving as an anti-blocking agent. The number proportion of the organic polymer particles having a particle size that is at least twice the average thickness of the surface layer is 35% or more of the total number of the organic polymer particles, and the number proportion of the organic polymer particles having a particle size that is at least four times the average thickness of the surface layer is 10% or less of the total number of the organic polymer particles.

Abstract: The purpose of the present invention is to provide an organic polymer fine particle which can be hardly fallen off from a film when used as an anti-blocking agent for a film. The organic polymer fine particle according to the present invention is characterized in comprising a (meth)acrylate polymer crosslinked by a bifunctional crosslinkable monomer and a hindered phenol antioxidant or a component derived therefrom, wherein a ratio of a structure unit composed of the bifunctional crosslinkable monomer in the (meth)acrylate polymer crosslinked by the bifunctional crosslinkable monomer is 5 mass % or more and 35 mass % or less, the sedimentation start time is 16 seconds or more, an amount of Al measured by a high-frequency inductively coupled plasma emission spectrometric analysis method is 1 ppm or less, and an amount of a sulfur atom measured by a high-frequency inductively coupled plasma emission spectrometric analysis method is 300 ppm or less in the organic polymer fine particle.

Abstract: The objective of the present invention is to, in a resin film containing an anti-blocking agent (organic polymer particles), achieve both a reduction in friction of the film and suppression of dropping-off of particles from the film surface. The laminated resin film of the present invention has a base film layer and a surface layer, and the surface layer contains organic polymer particles serving as an anti-blocking agent. The number proportion of the organic polymer particles having a particle size that is at least twice the average thickness of the surface layer is 35% or more of the total number of the organic polymer particles, and the number proportion of the organic polymer particles having a particle size that is at least four times the average thickness of the surface layer is 10% or less of the total number of the organic polymer particles.

Abstract: The purpose of the present invention is to provide an organic polymer fine particle which can be hardly fallen off from a film when used as an anti-blocking agent for a film. The organic polymer fine particle according to the present invention is characterized in comprising a (meth)aclylate polymer crosslinked by a bifunctional crosslinkable monomer and a hindered phenol antioxidant or a component derived therefrom, wherein a ratio of a structure unit composed of the bifunctional crosslinkable monomer in the (meth)aclylate polymer crosslinked by the bifunctional crosslinkable monomer is 5 mass % or more and 35 mass % or less, the sedimentation start time is 16 seconds or more, an amount of Al measured by a high-frequency inductively coupled plasma emission spectrometric analysis method is 1 ppm or less, and an amount of a sulfur atom measured by a high-frequency inductively coupled plasma emission spectrometric analysis method is 300 ppm or less in the organic polymer fine particle.

Abstract: The object of the present invention is to provide a resin particle having a protrusion that is more resistant to the detachment and having a uniform protrusion size and protrusion distribution density. The resin particle of the present invention comprises: a spherical part and a peripheral part having a plurality of convex part formed on the surface of the spherical part, wherein the spherical part and the peripheral part comprise a vinyl polymer and/or a polysiloxane component, the spherical part and the peripheral part are different in the composition, the melting point of the peripheral part is not less than 200° C., and the curvature center of the boundary between the peripheral part and the spherical part determined by a transmission electron microscope observation of the cross-section of the resin particle exists in the spherical part.

Abstract: The object of the present invention is to provide a resin particle having a protrusion that is more resistant to the detachment and having a uniform protrusion size and protrusion distribution density. The resin particle of the present invention comprises: a spherical part and a peripheral part having a plurality of convex part formed on the surface of the spherical part, wherein the spherical part and the peripheral part comprise a vinyl polymer and/or a polysiloxane component, the spherical part and the peripheral part are different in the composition, the melting point of the peripheral part is not less than 200° C., and the curvature center of the boundary between the peripheral part and the spherical part determined by a transmission electron microscope observation of the cross-section of the resin particle exists in the spherical part.