| abstract |
Dispersion affinity agent excellent in dispersibility and affinity of filler in polypropylene material, and composite material using the same. SOLUTION: 94.9 to 99.99 mol% of propylene units represented by structural formula (I), 0.01 to 0.1 mol% of polar units represented by structural formula (II), and structural formula (III) And a polar group-containing propylene copolymer (A) having a weight average molecular weight Mw of 70,000 to 1,000,000. Filler dispersion affinity agent (In the formula, R 1 represents a hydrocarbon group having 1 to 20 carbon atoms containing a polar group, and R 2 represents hydrogen or a hydrocarbon group having 2 to 20 carbon atoms.) |