Abstract: The photocurable coating composition according to the present invention is characterized in comprising 100 parts by mass of a vinyl monomer (A) and not less than 0.1 parts by mass and not more than 50 parts by mass of a minute polymer particle (B); wherein the volume average particle diameter of the minute polymer particle (B) is not less than 0.05 ?m and not more than 1 ?m; the vinyl monomer (A) contains one or more monomers selected from the group consisting of a (meth)acrylic acid ester monomer, hydroxyethyl (meth)acrylate and a urethane-modified (meth)acrylate as a main component; and the (meth)acrylic acid ester monomer is synthesized from an alcohol having not less than 3 carbon atoms and (meth)acrylic acid.

Abstract: The photocurable coating composition according to the present invention is characterized in comprising 100 parts by mass of a vinyl monomer (A) and not less than 0.1 parts by mass and not more than 50 parts by mass of a minute polymer particle (B); wherein the volume average particle diameter of the minute polymer particle (B) is not less than 0.05 ?m and not more than 1 ?m; the vinyl monomer (A) contains one or more polymers selected from the group consisting of a (meth)acrylic acid ester monomer, hydroxyethyl (meth)acrylate and a urethane-modified (meth)acrylate as a main component; and the (meth)acrylic acid ester monomer is synthesized from an alcohol having not less than 3 carbon atoms and (meth)acrylic acid.

Abstract: A synthetic resin powder having improved powder characteristics such as granulation property and blocking resistance, which is obtained by coagulating a latex of an MBS resin satisfying the following relational equations (1) and (2): −1.5x+140≦y≦−1.65x+180  (1) 55≦x≦70  (2) wherein x is a butadiene content (% by weight) in the MBS resin, and y is a Vicat softening point (°C.) of the MBS resin, adding 0.1 to 10 parts by weight of a hard polymer per 100 parts by weight of the MBS resin in the state of latex or coagulated slurry to the resulting slurry of MBS resin, and recovering a powder from the resulting mixture. The resin powder is useful as an impact modifier for vinyl chloride resins and can impart an excellent impact resistance without impairing the transparency of vinyl chloride resins.