| 摘要 |
Provided are composite polyamide fine particles and a method for producing the same, the fine particles comprising a polyamide (A1) which has a melting point or a glass transition temperature of over 100°C and a polymer (A2) which is different from the polyamide (A1). The composite polyamide fine particles have: a dispersion structure in which a plurality of domains each having an average particle diameter of 0.05 to 100 µm whose main component is the polymer (A2) are dispersed in a polyamide (A1) based matrix; an average particle diameter of 0.1 to 500 µm; and a sphericity of 80 or more. The present invention provides: novel composite polyamide fine particles in which excellent fracture toughness, impact resistance, chemical resistance, etc. intrinsic to polyamide fine particles are not impaired and which have various properties and characteristics such as high fracture toughness, impact resistance and heat resistance that cannot be achieved by polymer fine particles comprising a single type of polyamide; and a method for industrially and advantageously producing the composite polyamide fine particles without being limited by the types of resin to be composited. |
