Abstract: A method for producing a composite resin particle dispersion includes: performing polymerization A by polymerizing a styrene compound and a vinyl monomer other than the styrene compound to form a styrene-based resin; performing polymerization B by polymerizing a (meth)acrylic acid ester compound in the presence of the styrene-based resin to form intermediate resin particles containing the styrene-based resin and a (meth)acrylic acid ester-based resin; and performing polymerization C by polymerizing a styrene compound and a vinyl monomer other than the styrene compound in the presence of the intermediate resin particles to form composite resin particles. The mass ratio of the styrene-based resin to the (meth)acrylic acid ester-based resin in the composite resin particles is from 80:20 to 20:80. A difference between the lowest glass transition temperature and the highest glass transition temperature in the composite resin particles is 30° C. or more.

Abstract: A cellulosic particle contains cellulose as its base constituent. If hydrophobized silica particles are attached to the cellulosic particle, the percentage detachment upon sonication of the silica particles is 50% or less.

Abstract: A method for producing a composite resin particle dispersion includes: performing polymerization A by polymerizing a styrene compound and a vinyl monomer other than the styrene compound to form a styrene-based resin; performing polymerization B by polymerizing a (meth)acrylic acid ester compound in the presence of the styrene-based resin to form intermediate resin particles containing the styrene-based resin and a (meth)acrylic acid ester-based resin; and performing polymerization C by polymerizing a styrene compound and a vinyl monomer other than the styrene compound in the presence of the intermediate resin particles to form composite resin particles. The mass ratio of the styrene-based resin to the (meth)acrylic acid ester-based resin in the composite resin particles is from 80:20 to 20:80. A difference between the lowest glass transition temperature and the highest glass transition temperature in the composite resin particles is 30° C. or more.

Abstract: A cellulosic particle contains cellulose as its base constituent, and the 5-day and 60-day percentage biodegradations of the cellulosic particle measured as per JIS K6950:2000 are lower than 20% and 60% or higher, respectively.

Abstract: A cellulosic particle contains 90 parts by mass or more and 99.5 parts by mass or less of cellulose; and 0.5 parts by mass or more and 10 parts by mass or less of a cellulose derivative.

Abstract: A cellulosic particle includes: a cellulose-based core particle; a first coating layer covering the core particle and containing a polyamine compound; and a second coating layer covering the first coating layer and containing at least one selected from the group consisting of a wax, a linear-chain saturated fatty acid, a hydroxy fatty acid, and an amino acid compound.

Abstract: A cellulosic particle contains a first component that is cellulose; and a second component that is at least one selected from the group consisting of a fatty acid derivative (A), an aromatic compound having a long-chain aliphatic group and at least one of a phenolic hydroxyl group or a monoglycidyl ether group directly bound to an aromatic group (B), and a (meth)acrylic compound (C).

Abstract: A polyimide precursor solution includes a polyimide precursor having a glass transition temperature Tg of equal to or higher than 300° C. after imidization, an aqueous solvent containing water, an organic amine compound, and resin particles having a volume average particle size of equal to or less than 100 nm.

Abstract: A polyimide precursor-containing aqueous composition contains a polyimide precursor, resin particles having a polyalkylene oxide group, and a solvent containing water and an aprotic polar solvent.

Abstract: A method for producing a composite resin particle dispersion includes: performing polymerization A by polymerizing a styrene compound and a vinyl monomer other than the styrene compound to form a styrene-based resin; performing polymerization B by polymerizing a (meth)acrylic acid ester compound in the presence of the styrene-based resin to form intermediate resin particles containing the styrene-based resin and a (meth)acrylic acid ester-based resin; and performing polymerization C by polymerizing a styrene compound and a vinyl monomer other than the styrene compound in the presence of the intermediate resin particles to form composite resin particles. The mass ratio of the styrene-based resin to the (meth)acrylic acid ester-based resin in the composite resin particles is from 80:20 to 20:80. A difference between the lowest glass transition temperature and the highest glass transition temperature in the composite resin particles is 30° C. or more.

Abstract: A pressure sensitive adhesive includes: composite resin particles that contain a styrene resin containing, as polymerization components, styrene and a vinyl monomer other than styrene, and a (meth)acrylate resin containing, as a polymerization component, a (meth)acrylate; and an aqueous solvent containing water, in which a mass ratio of the styrene resin to the (meth)acrylate resin (styrene resin:(meth)acrylate resin) is 80:20 to 20:80, a difference between the lowest glass transition temperature and the highest glass transition temperature of the composite resin particles is 30° C. or more, a melt viscosity of the composite resin particles at 100° C. is 4000 Pa·s or more and 20000 Pa·s or less, and, in a melt viscosity range of the composite resin particles of 4000 Pa·s or more and 20000 Pa·s or less, a slope of a logarithm of the melt viscosity of the composite resin particles relative to a temperature of the composite resin particles is ?0.08 or more and ?0.04 or less.

Abstract: A method for producing a composite resin particle dispersion includes: polymerizing a (meth)acrylic acid ester compound to form a (meth)acrylic acid ester-based resin; and polymerizing a styrene compound and a vinyl monomer other than the styrene compound in the presence of the (meth)acrylic acid ester-based resin to form composite resin particles containing a styrene-based resin and the (meth)acrylic acid ester-based resin. The mass ratio of the styrene-based resin to the (meth)acrylic acid ester-based resin in the composite resin particles is from 80:20 to 20:80. A difference between the lowest glass transition temperature and the highest glass transition temperature in the composite resin particles is 30° C. or more.

Abstract: A method for producing a liquid dispersion of composite resin particles includes polymerizing a styrene compound and an extra vinyl monomer together to give a styrene resin; polymerizing a (meth)acrylate compound in the presence of the styrene resin to give intermediate resin particles A, which are resin particles containing the styrene resin and a (meth)acrylate resin; polymerizing a styrene compound and an extra vinyl monomer in the presence of intermediate resin particles A to give liquid dispersion B, which is a liquid dispersion containing intermediate resin particles B; and adding a polymerization initiator to liquid dispersion B to give a liquid dispersion containing composite resin particles. In the composite resin particles as a whole, the ratio by mass between the styrene and (meth)acrylate resins is between 80:20 and 20:80. There is a difference of 30° C. or more between the lowest and highest glass transition temperatures of the composite resin particles.

Abstract: A polyimide precursor solution contains a polyimide precursor having a weight average molecular weight of 40,000 or more, and an aqueous solvent containing a tertiary amine compound and water, in which a viscosity of the polyimide precursor solution after a storage at 25° C. for 14 days is 50% or more and 200% or less with respect to a viscosity of the polyimide precursor solution before the storage.

Abstract: A method for producing a printed material includes providing pressure-induced phase transition particles to a part of an outside margin portion or a portion to be folded of a recording medium; bonding the pressure-induced phase transition particles to the recording medium; and pressure-bonding a multilayer body in which plural recording media are stacked, the recording media including the recording medium having the pressure-induced phase transition particles bonded thereon.

Abstract: A method for producing a printed material includes providing pressure-induced phase transition particles to a part of an outside margin portion or a portion to be folded of a recording medium; bonding the pressure-induced phase transition particles to the recording medium; and pressure-bonding a multilayer body in which plural recording media are stacked, the recording media including the recording medium having the pressure-induced phase transition particles bonded thereon.

Abstract: A toner set includes a color toner and a transparent toner that has a pressure phase transition property. The color toner and the transparent toner satisfy 1.0?tan ?1?4.0 and 1.2?tan ?1/tan ?2?3.0 where tan ?1 represents tan ? of the color toner at 100° C., and tan ?2 represents tan ? of the transparent toner at 100° C.

Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-based graft polymer and a fluorine-containing resin particle. The fluorine-based graft polymer includes at least a first structural unit that does not have an acidic group with a pKa of 3 or less but has a fluorine atom, a second structural unit derived from a macromonomer, and a third structural unit having the acidic group with a pKa of 3 or less.

Abstract: An electrophotographic photoreceptor includes a conductive substrate and a photosensitive layer disposed on the conductive substrate. An outermost surface layer of the electrophotographic photoreceptor contains a fluorine-based graft polymer and a fluorine-containing resin particle. The fluorine-based graft polymer includes at least a first structural unit that does not have an acidic group with a pKa of 3 or less but has a fluorine atom, a second structural unit derived from a macromonomer, and a third structural unit having the acidic group with a pKa of 3 or less.

Abstract: A pressure sensitive adhesive particle includes a styrene resin; and a (meth)acrylate resin, wherein the (meth)acrylate resin contains two kinds of (meth)acrylates as a polymerization component in which the weight proportion of the (meth)acrylate to the total polymerization components is 90% by weight or more, and has two glass transition points in which a difference between the lowest glass transition temperature and the highest glass transition temperature is 30° C. or higher.