Claims
- 1. A blow molded automotive article comprising a coupled propylene polymer composition comprising a coupled propylene polymer and optionally one or more of a polyolefin elastomer, a thermoplastic polymer or a filler.
- 2. The article of claim 1, wherein the coupled propylene polymer is formed by a reaction of a coupling agent with a propylene polymer.
- 3. The article of claim 2 wherein the coupling agent is a sulfonyl azide.
- 4. The article of claim 3 wherein the sulfonyl azide is 4,4′-diphenyl ether bis(sulfonyl azide).
- 5. The article of claim 2 wherein the propylene polymer is an impact propylene copolymer.
- 6. The article of claims 1 or 5 wherein the coupled propylene polymer composition further comprises a polyolefin elastomer.
- 7. The article of claim 6 wherein the polyolefin elastomer is a substantially linear ethylene polymer or a linear ethylene polymer.
- 8. The article of claims 1 or 5 wherein the coupled propylene polymer composition further comprises a thermoplastic polymer.
- 9. The article of claim 8 wherein the thermoplastic polymer is high crystalline polypropylene homopolymer, polyethylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acetate copolymer or ethylene acrylic acid.
- 10. The article of claims 1 or 5 wherein the coupled propylene polymer composition further comprises a filler.
- 11. The article of claim 10 wherein the filler is talc.
- 12. The article of claim 5 wherein the coupled propylene polymer composition further comprises two or more of a polyolefin elastomer, a thermoplastic polymer or a filler.
- 13. The article of claim 12 wherein the polyolefin elastomer is a substantially linear ethylene polymer or a linear ethylene polymer, the thermoplastic polymer is a high crystalline polypropylene homopolymer and the filler is talc.
- 14. A process for blow molding a coupled propylene polymer composition into an automotive article comprising the step(s) of
i extruding a coupled propylene polymer in an extruder through a die, ii forming a molten tube-shaped parison, iii holding the parison within a shaping mold, iv blowing a gas into the mold so as to shape the parison according to the profile of the mold and v yielding a blow molded automotive article.
- 15. The process of claim 14 wherein the propylene polymer coupling reaction takes place in the same extruder that produces the article.
- 16. The process of claims 14 or 15 wherein the article is a seat back, a head rest, a knee bolster, glove box door, an instrument panel, a bumper facia, a bumper beam, a center console, an intake manifold, a spoiler, a side molding, a pillar, a door trim, an airbag cover, a HVAC duct, a spare tire cover, a fluid reservoir, a rear window shelf, a resonator, a trunk board or an arm rest.
- 17. The article of claims 1, 5 or 12 is a seat back, a head rest, a knee bolster, glove box door, an instrument panel, a bumper facia, a bumper beam, a center console, an intake manifold, a spoiler, a side molding, a pillar, a door trim, an airbag cover, a HVAC duct, a spare tire cover, a fluid reservoir, a rear window shelf, a resonator, a trunk board or an arm rest.
CROSS REFERENCE STATEMENT
[0001] This application claims the benefit of U.S. Provisional Application No. 60/326,497, filed Oct. 1, 2001.
Provisional Applications (1)
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Number |
Date |
Country |
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60326497 |
Oct 2001 |
US |