PURPOSE: To provide the titled composition having improved abrasion resistance and decreased temperature dependency of melt viscosity and capable of giving a uniform molded article having low surface friction resistance with easy control of the molding temperature, by compounding an oxide or a salt of the II-, III- or IV-group metal of the short form of the periodic table.
CONSTITUTION: 100pts.wt. of a polyester-type blck copolymer consisting of a high-melting hard segment composed mainly of an aromatic polyester and a low- melting soft segment composed of an aliphatic polyester, is compounded with 0.005W10pts.wt. of an oxide or a salt of the II-, III- or IV-group metal of the short form of the periodic table, e.g. ZnO, MgO, wollastonite, clay, etc. The composition is preferably further mixed with ≥2pts.wt. of an additive having an average particle diameter of ≤100μ.
TAKEUCHI TOSHIAKI
MINAMI TAKAHISA
IMANAKA HIROSHI
SUMOTO MISAO
