| 摘要 |
PURPOSE:To obtain powder for powder molding use, composed of a specific elastomer having respective specific hardness, average particle diameter, angle of repose and apparent bulk density, exhibiting excellent odorlessness, crack resistance, light-weight property, soft feeling, etc., and useful as a surface-skin material for interior trim of automobile, etc. CONSTITUTION:This powder is composed of a styrene-based thermoplastic elastomer having a hardness of 40-95 and composed of (A) 40-90wt.% of a hydrogenated derivative of a styrene-conjugated diene block copolymer such as hydrogenated styrene-butadiene block copolymer and (B) 10-60wt.% of a paraffinic oil such as an oil having the number of C atoms in the paraffin chain accounting for >=50% of the total number of C atoms and having a weight-average molecular weight of 300-4,000. The powder has an average particle diameter of 100-8,000mum, an angle of repose of <=60 deg. and an apparent bulk density of <=0.2g/mL. |
