Patent ID: 7258921

Claim:
A composite particle made from a base particle (A) and a carbodiimide resin (B), wherein said base particle (A) has a functional group reactable with a carbodiimide group and said carbodiimide resin (B) contains a carbodiimide group and said base particle (A) and said carbodiimide resin (B) are bonded together by the functional group of the base particle (A) and the carbodiimide group of the carbodiimide resin (B) to form a shell layer comprised of the carbodiimide resin (B) having average thickness diameter (L), represented by the following numerical equation [1], in the range of 0.01 to 20 μm: L =( L 2 −L 1 )/2 [1] wherein L 1 represents average particle diameter of the base particle and L 2 represents average particle diameter of the composite particle.