Compositions and method of coating automotive underbodies
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Sep 5, 2002
app pub date -
Mar 14, 2002
filing date -
Jun 10, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of coating some or all of an underbody of a vehicle on a production line, comprising applying a polymeric coating powder to the underbody or the vehicle body part, sintering the powder to the underbody or the vehicle body part. The polymeric coating powder includes a mixture comprising a polyolefin having polar functionality, and one or more ethylene .alpha.-olefln copolymers, the mixture having a melt flow index greater than 15 g/10 minutes (2.16 kg, 190.degree. C.). The polymeric coating powder preferably has a melt flow index greater than 20 g/10 minutes. The ethylene .alpha.-olefln copolymer should contain at least 50 mole % ethylene. The .alpha.-olefin co-monomer may be chosen from propylene, butene, hexene or octene. The polymer having polar functionality may be a copolymer of ethylene with at least one polar monomer.
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