| abstract |
PURPOSE: To improve the thermal stability, resistance to oxidation and blocking, etc., of moldings, particularly film, sheet, etc., by blending a resin with an additive obtd. by mixing a fine powder of amorphous silica with type A zeolite having specified physical properties or an acid-treated product thereof. n CONSTITUTION: A resin compsn. is formed by blending 0.01W50pts.wt. additive with 100pts.wt. resin. Said additive is obtd. by blending a fine powder of amorphous silica with type A zeolite whose primary particles are spherical and have an average particle size of 5μm or below, or an acid-treated product thereof, which still retain the characteristics of said zeolite particles, but is amorphous by X-ray diffractometry. Pref. at least 0.2wt% (in terms of SiO 2 ) amorphous silica is blended with the type A zeolite or the acid-treated product thereof. n COPYRIGHT: (C)1987,JPO&Japio |