| 摘要 |
PURPOSE:To obtain the title fine particles which, when used as an internal filler of a resin molding, exhibits excellent affinity for the resin and does not cause void formation during secondary molding or after-treatment involving stretching, by surface-treating fine inorganic particles with a specified hydrocarbon resin. CONSTITUTION:The title fine particles are obtained by surface treating fine inorganic particles (a) (e.g., amorphous aluminum silicate which is an acid- treated synthetic zeolite) of a primary article diameter of 0.1-10mum, preferably, 1-5mum and a BEt specific surface area of 300m<2>/g with 2wt.%, based on component (a), preferably, 10wt.% hydrocarbon resin (b) selected from among a terpene resin, a petroleum resin and rosin. 0.02-1.0pt.wt.m said fine particles are added as an internal filler to 100pts.wt. resin such as a polyolefin resin, a polyester resin or a polyamide resin.
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