PURPOSE: To obtain the subject composition, composed of a molten mixture of a crystalline olefinic polymer with a thermoplastic polyamide, an unsaturated carboxylic acid (anhydride) and an organic peroxide and capable of exhibiting excellent adhesive strength to nonpolar and polar substrates.
CONSTITUTION: The objective composition is composed of a molten mixture of (A) a polymer component composed of (i) 95-30wt.% crystalline olefinic polymer [preferably propylene (co)polymer having 100-200°C melting point] and (ii) 5-70wt.% thermoplastic polyamide (preferably a dimer acid-based polyamide or nylon 12) with (B) an unsaturated carboxylic acid (anhydride) (preferably maleic anhydride) and (C) an organic peroxide (e.g. dicumyl peroxide). Furthermore, the blending ratios of the components based on 100 pts.wt. component (A) are preferably 0.01-5 pts.wt. component (B) and 0.01-5 pts.wt. component (C).
DOI KIYOTO
KITAMURA TADASHI
YASHIRO KENICHI
