MANUFACTURING METHOD OF MODIFIED PROPYLENE-BASED POLYMER COMPOSITION, MODIFIED PROPYLENE-BASED POLYMER COMPOSITION TO BE OBTAINED BY THIS MANUFACTURING METHOD, AND MOLDING USING THE COMPOSITION, AND COMPONENT MADE BY THIS MOLDING

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of a modified propylene-based polymer composition which is excellent in rigidity and heat resistance and excellent in compatibility with other resins and excellent in adhesiveness to an inorganic filler and demonstrates ductility at high speed drawing, and still is economical, a modified propylene-based polymer composition to be obtained by this manufacturing method, and a molding using this composition as well as a component made by this molding.SOLUTION: In a manufacturing method of a modified propylene-based polymer including a process of melt kneading a propylene-based polymer (a composition A) under an existence of a carboxylic acid anhydride (a composition B) and a peroxide (a composition C), a melt flow ratio (230°C) of the composition A is 0.5-10g and the melt flow ratio of the modified propylene-based polymer (230°C) is 40-80g. The modified propylene-based polymer composition to be obtained by this manufacturing method, and a molding using this composition as well as a component made by this molding are provided.