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US 9,809,691 B2Granted
Polyolefin composite composition for automotive airduct
AssigneesHyundai Motor Company, Lotte Chemical Corporation, Kia Motors Corporation
InventorsSeul Yi, Boo Youn An, Dae Sik Kim, Kyeong Hoon Jang, In Soo Han, You Jin Park, Byung Kook Nam, Hyeung Shin Lee, Hyun Jin Kim
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Abstract
A polyolefin composite composition is used in an automotive air duct. The polyolefin composite composition is useful as an automotive air duct component material due to excellent mechanical property, heat resistance, and foaming property as a composition in which a polyethylene resin and a long chain branched polypropylene resin having low crystallization of 45% or less are included as a base resin.
Claims7
A polyolefin composite composition, comprising:
- a polyethylene resin of 65 to 94.5 wt, %;
- a long chain branched polypropylene resin of 5 to 30 wt. % with crystallization of 20 to 45%;
- and
- an inorganic filler of 0.5 to 5 wt. %, based on the overall weight of the polyolefin composite composition;
- wherein the long chain branched polypropylene resin has branched chains of 4 to 20/1,000 C in a linear polypropylene.
2 more elements
Dependencies are inferred from the claim text.