ACID-MODIFIED POLYPROPYLENE RESIN, METHOD FOR PRODUCING THE SAME, AND RESIN COMPOSITION USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an acid-modified polypropylene resin usable for an adhesive which is capable of bonding a polyolefin resin to a polar resin with sufficient bonding strength and to provide a method for producing the resin and to provide a resin composition using the resin. SOLUTION: The acid-modified polypropylene resin is obtained by grafting an organic acid component to a polypropylene resin which is an isotactic polypropylene resin. The grafted amount X (wt%) of the organic acid component in the acid-modified polypropylene resin is within the range from 1.0 to 20. 0 wt%, and the melt flow rate Y (g/10 min) of the acid-modified polypropylene resin satisfies the formula: Y ≤ 18.5 exp(0.82X). The method for producing such an acid-modified polypropylene resin and a resin composition using such an acid-modified polypropylene resin are also disclosed. COPYRIGHT: (C)2007,JPO&INPIT