Rubber particles, composite particles and production methods thereof

Rubber particles comprised of a copolymer having a polyester structure and an organopolysiloxane structure,

• wherein the copolymer is a hydrosilylation crosslinked product of:
• (A) a polyester having at least two aliphatic unsaturated groups per molecule, which is a component with molecular chain ends of a poly(ε-caprolactone) polyol being substituted with aliphatic unsaturated groups;
• and
• (B) an organohydrogenpolysiloxane having at least two silicon atom-bonded hydrogen atoms per molecule,
• provided that excluded is a combination where there are two said aliphatic unsaturated groups per molecule of the component (A) and there are two said silicon atom-bonded hydrogen atoms per molecule of the component (B),
• wherein the rubber particles have a spherical shape and a volume average particle size of 0.1 to 50 μm, and
• wherein the rubber particles have a rubber hardness of 20 to 85 when measured by ASKER Durometer Type C.