Polypropylene resin composition with anti-scratch characteristics
The present invention provides a propylene resin composition having excellent anti-scratch characteristic. Specifically, provided is a polyolefin resin composition comprising a high crystalline polypropylene resin, a rubber component, an inorganic filler and an aluminosiloxane masterbatch, with excellent damage resistance such as anti-scratch characteristic thereby giving very low surface damage, excellent heat resistance, good rigidity and impact properties and injection moldability, for car interior or exterior parts.
1. A polypropylene resin composition having anti-scratch characteristic comprising 35–92 wt % of a high crystalline polypropylene resin having 96% or more of isotactic pentad ratio measured by C 13 -NMR, 1–30 wt % of a rubber component, 5–35 wt % of an inorganic filler and 1–10 wt % of an aluminosiloxane masterbatch.
2. The polypropylene resin composition according to claim 1 , wherein the high crystalline polypropylene resin has a melt index of 8–60 g/10 min, and is selected from the group consisting of a propylene homopolymer, a propylene-α-olefin copolymer and mixtures thereof.
3. The polypropylene resin composition according to claim 1 , wherein the rubber component is at least one selected from the group consisting of amorphous ethylene-α-olefin copolymers and styrene-based thermoplastic elastomers.
4. The polypropylene resin composition according to claim 1 , wherein the inorganic filler is a talc having an average particle size of 3–6 μm.
5. The polypropylene resin composition according to claim 1 , wherein the aluminosiloxane masterbatch is prepared by mixing aluminosiloxane and polypropylene at the weight ratio of 3:7–7:3.
6. The polypropylene resin composition according to claim 1 , further comprising 1–10 wt % of a high density polyethylene.
7. The polypropylene resin composition according to claim 2 , further comprising 1–10 wt % of a high density polyethylene.
8. The polypropylene resin composition according to claim 3 , further comprising 1–10 wt % of a high density polyethylene.
9. The polypropylene resin composition according to claim 4 , further comprising 1–10 wt % of a high density polyethylene.
10. The polypropylene resin composition according to claim 5 , further comprising 1–10 wt % of a high density polyethylene.
11. The polypropylene resin composition according to claim 1 , further comprising 1–10 wt % of a coloring agent masterbatch.
12. The polypropylene resin composition according to claim 2 , further comprising 1–10 wt % of a coloring agent masterbatch.
13. The polypropylene resin composition according to claim 3 , further comprising 1–10 wt % of a coloring agent masterbatch.
14. The polypropylene resin composition according to claim 4 , further comprising 1–10 wt % of a coloring agent masterbatch.
15. The polypropylene resin composition according to claim 5 , further comprising 1–10 wt % of a coloring agent masterbatch.