Claims
- 1. A paint-coated article of a polypropylene composition which is produced by molding into a shaped article a polypropylene composition comprising:
- (A) 60-95 parts by weight of a crystalline polypropylene, which is a propylene-ethylene block copolymer containing ethylene-propylene random copolymer units and crystalline polypropylene homopolymer units wherein the amount of said ethylene-propylene random copolymer units is 5 to 20% by weight relative to the total weight of the propylene-ethylene block copolymer, the ethylene content in the ethylene-propylene random copolymer units is 20 to 60% by weight, and the crystalline polypropylene homopolymer units have an intrinsic viscosity [.eta.] measured with tetralin solution at 135.degree. C. of 0.8 to 20 dl/g, a Q value, weight average molecular weight/number average molecular weight, measured by GPC of 3.0 to 5.0 and a content of xylene-soluble portion at 20.degree. C. of not more than 1.5% by weight,
- (B) 5-40 parts by weight of an ethylene-propylene random copolymer rubber containing 10-70 weight % of propylene and having a Mooney viscosity, ML.sub.1+4 100.degree. C., of 10-100, the mixture of (A) and (B) being 100 parts by weight,
- (C) 1-15 parts by weight, per 100 parts by weight of the mixture of said crystalline polypropylene and ethylene-propylene random copolymer rubber, of a hydroxyl group-containing propylene oligomer having a number-average molecular weight of 2,000-20,000 and a hydroxyl value of 10-60, and
- (D) an inorganic filler in an amount of up to 40 parts by weight per 100 parts by weight of the mixture of said crystalline polypropylene and ethylene-propylene random copolymer rubber,
- treating the resulting shaped article with water or a non-halogenated organic solvent, applying thereon a paint and baking the paint-applied article.
- 2. The article according to claim 1, wherein said inorganic filler is talc with an average particle diameter not larger than 3 .mu.m.
- 3. The article according to claim 1, wherein the polypropylene composition further comprises a suitable amount of an additive or auxiliary.
- 4. The article according to claim 1, wherein the shaped article is treated with a non-halogenated organic solvent selected from the group consisting of an alcohol, an aliphatic hydrocarbon, an aromatic hydrocarbon, a ketone and an ester.
Priority Claims (2)
Number |
Date |
Country |
Kind |
4-327733 |
Dec 1992 |
JPX |
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5-227491 |
Sep 1993 |
JPX |
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Parent Case Info
This is a Divisional of application Ser. No. 08/161,274 filed Dec. 3, 1993, issued as U.S. Pat. No. 5,4626,987.
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Divisions (1)
|
Number |
Date |
Country |
Parent |
161274 |
Dec 1993 |
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