| abstract |
A synthetic resin additive characterized by comprising hydroxyapatite with a petaloil porous structure, represented by the chemical formula Ca10(PO4)6(OH)2, and having particular particle diameter, degree of dispersion, and specific surface area; and a synthetic resin composition comprising the synthetic resin additive. Use of the synthetic resin additive can provide a film satisfying all of antiblocking property, transparency, and scratch resistance requirements. |