| abstract |
A synthetic resin composition, having a high toughness and a wear resistance, comprises a synthetic resin with solubility parameter δ 9.5 cal 1/2 cm -3/2 or higher and a modifier with solubility parameter δ 8.5 cal 1/2 cm -3/2 or lower and dispersed therein, characterized in that a silicon containing copolyester, being a block copolymer consisting of 1 ∼ 90% by weight of siloxane segment represented by the undermentioned general formula (A) and 99 ∼ 1% by weight of polyester segment represented by the undermentioned general formula (B), the degree of polymerization of siloxane segment being 1 ∼ 2,000, and that of polyester segment 1 ∼ 1,000, is added to be mixed therewith as a dispersibility improver:n (In this formula, m denotes a number of 1 ∼ 2,000.) or n (In this formula, R₁ designates one or two or more members selected from among aromatic divalent radicals having 6 ∼12 carbon atoms or aliphatic divalent radicals having 4 ∼20 carbon atoms, and R₂ from among aromatic divalent radicals having 6 ∼ 20 carbon atoms or aliphatic divalent radicals having 2 ∼ 20 carbon atoms; and n stands for a number of 1 ∼ 1,000) |