Resin particles, method for producing the resin particles, and use thereof

Resin particles comprising polymer of a monomer mixture containing

• a monofunctional (meth)acrylic ester monomer,
• a monomer represented by a general formula (I):
• CH2═C(R1)—COO—(CH2CH2O)n—CO—C(R1)═CH2 (I)
• where R1 is a hydrogen or a methyl group and n is an integer from 1 to 4, and
• a monomer represented by a general formula (II):
• CH2═C(R2)—COO—(CH2CH2O)m—CO—C(R2)═CH2 (II)
• where R2 is a hydrogen or a methyl group and m is an integer from 5 to 15,
• wherein the monomer mixture contains 65.0 to 85.0 parts by weight of the monofunctional (meth)acrylic ester monomer, 0.5 to 5.0 parts by weight of the monomer represented by the general formula (I), and 10.0 to 30.0 parts by weight of the monomer represented by the general formula (II) with respect to 100 parts by weight of the total amount of the monofunctional (meth)acrylic ester monomer, the monomer represented by the general formula (I), and the monomer represented by the general formula (II), and
• the resin particles have a volume average particle diameter of 5 to 50 μm, a recovery rate of 15% or more and less than 30%, and a compression strength (MPa) at the time of 10% compression deformation that provides a multiplication product in the range of 24.5 to 60.0 obtained by multiplying the compression strength and the volume average particle diameter (μm).