Particulate and method for producing particulate

A method for producing a powdery and/or granular material, said method comprising:

• an agglutinating step of preparing an agglutinate containing fine polymer particles (A) and a resin (B);
• and
• a drying step of airflow-drying or freeze-drying the agglutinate;
• wherein
• the fine polymer particles (A) contain a rubber-containing graft copolymer that includes an elastic body and a graft part grafted to the elastic body,
• the elastic body contains at least one selected from the group consisting of diene-based rubbers, (meth)acrylate-based rubbers, and organosiloxane-based rubbers,
• the graft part contains a polymer that contains, as one or more structural units, the one or more structural units derived from at least one type of monomer selected from the group consisting of aromatic vinyl monomers, vinyl cyanide monomers, and (meth)acrylate monomers,
• the resin (B) is a liquid which has a viscosity of 100 mPa·s to 1,000,000 mPa·s at 25° C., a semisolid, or a solid, and
• an amount of the fine polymer particles (A) is 50% by weight to 99% by weight and an amount of the resin (B) is 1% by weight to 50% by weight, where 100% by weight represents a total amount of the fine polymer particles (A) and the resin (B).

A method for producing a powdery and/or granular material, said method comprising

• a mixing step of mixing an aqueous latex (A) containing fine polymer particles (A) with an aqueous latex (B) containing a resin (B), and
• a preparation step of preparing a powdery and/or granular material containing the fine polymer particles (A) and the resin (B) from a mixture solution obtained in the mixing step, wherein:
• the fine polymer particles (A) contain a rubber-containing graft copolymer that includes an elastic body and a graft part grafted to the elastic body;
• the elastic body contains at least one selected from the group consisting of diene-based rubbers, (meth)acrylate-based rubbers, and organosiloxane-based rubbers;
• the graft part contains a polymer that contains, as one or more structural units, the one or more structural units derived from at least one type of monomer selected from the group consisting of aromatic vinyl monomers, vinyl cyanide monomers, and (meth)acrylate monomers;
• the resin (B) is a liquid which has a viscosity of 100 mPa·s to 1,000,000 mPa·s at 25° C., a semisolid, or a solid;
• the powdery and/or granular material contains the fine polymer particles (A) in an amount of 50% by weight to 99% by weight and the resin (B) in an amount of 1% by weight to 50% by weight, with respect to 100% by weight in total of the fine polymer particles (A) and the resin (B);
• and
• the mixture solution contains droplets having a volume-average particle size of not less than x−σ and not more than x+5σ in an amount of 0.0% by weight to 14.0% by weight, with respect to 100% by weight of the resin (B) in the mixture solution, where x (μm) is a volume-average particle size of droplets in the aqueous latex (B), and σ is a standard deviation of the volume-average particle size of droplets in the aqueous latex (B).