| abstract |
(Meth) acrylic acid ester polymer (A1) having a glass transition temperature of 0 占 폚 or lower, wherein the acetone soluble fraction of the polymer powder is not less than 5% by mass and the mass average molecular weight of the acetone- And (ii) a polymer powder having an acetone-soluble fraction of 2 mass% or more and 35 mass% or less, a mass-average molecular weight of the acetone-soluble fraction of 100,000 or more, and a volume average primary particle diameter (Dv) of 200 nm or more (P2). ≪ / RTI > |