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    • 31. 发明专利
    • POLYOLEFIN RESIN COMPOSITION
    • JPH0551512A
    • 1993-03-02
    • JP23711591
    • 1991-08-23
    • MITSUI PETROCHEMICAL IND
    • TAKAHASHI MAMORUMORIYA SATORUISHIMOTO AKIO
    • C08L51/06
    • PURPOSE:To obtain a polyolefin resin composition which gives a molding excellent in impact resistance and rigidity by blending a specific polyolefin with a specific cycloolefin resin and a specific soft polymer in a predetermined proportion. CONSTITUTION:The title composition comprises (A) a modified crystalline polyolefin obtained by grafting an unsaturated carboxylic acid (or derivative) onto a crystalline polyolefin, (B) a modified olefin resin obtained by grafting an epoxy compound onto a cycloolefin resin selected from among a random copolymer of ethylene with a cycloolefin represented by the formula (wherein n and q each is 0 or 1; m is 0 or larger; R to R , R , and R each is H, a halogen, or a hydrocarbon group; and R to R may be bonded to each other to form a mono- or polycyclic group or either R and R or R and R many bonded to each other to form an alkylidene group) and (hydrogenated) homo- and copolymers of the cyclic olefin obtained through ring opening polymerization, and (C) a modified soft polymer obtained by grafting an unsaturated carboxylic acid (or derivative) onto a soft polymer. In the composition, the weight ratio of (A) to (B) and that of (C) to the sum of (A) and (B) are respectively is predetermined ranges.