US 12,715,985 B2 · Polypropylene resin composition

Abstract

A polypropylene resin composition which contains: from 20% by weight to 50% by weight of a heterophasic propylene polymerization material (A) that has a melt flow rate of from 70 g/10 minutes to 300 g/10 minutes as determined at 230° C. under a load of 2.16 kgf in accordance with JIS-K-6758; from 15% by weight to 40% by weight of an ethylene/α-olefin copolymer (B-1) that has a melt flow rate of from 2 g/10 minutes to 100 g/10 minutes as determined at 190° C. under a load of 2.16 kgf in accordance with JIS-K-7210; from 10% by weight to 20% by weight of an ethylene/α-olefin copolymer (B-2) that has a melt flow rate of 1 g/10 minutes or less as determined at 190° C. under a load of 2.16 kgf in accordance with JIS-K-7210; from 20% by weight to 40% by weight of glass fibers (C); and from 0.1% by weight to 5% by weight of an acid-modified polyolefin (D).

Claims11

Dependent claims

A polypropylene resin composition comprising:

from 20 to 50 parts by weight of a heterophasic propylene polymer material (A) having a melt flow rate of from 70 g/10 min to 300 g/10 min as determined at 230° C. under a load of 2.16 kgf in accordance with JIS-K-6758;
from 17 to 40 parts by weight of an ethylene-α-olefin copolymer (B-1) having a melt flow rate of from 2 g/10 min to 100 g/10 min as determined at 190° C. under a load of 2.16 kgf in accordance with JIS-K-7210;
from 15 to 20 parts by weight of an ethylene-α-olefin copolymer (B-2) having a melt flow rate of 1 g/10 min or less as determined at 190° C. under a load of 2.16 kgf in accordance with JIS-K-7210;
from 20 to 40 parts by weight of a glass fiber (C);
and
from 0.1 to 5 parts by weight of an acid-modified polyolefin (D) based on 100 parts (A), (B-1), (B-2), (C), and (D).

3 more elements

Dependencies are inferred from the claim text.

Polypropylene resin composition

Life of this patent

Polypropylene resin composition

Life of this patent

Abstract

Claims11