Linear polyethylene, fluorocarbon polymer and polyalkylsiloxane compositions, and improved method of film extrusion using same
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United States of America Patent
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Jun 6, 1989
Issued Date -
N/A
app pub date -
Jan 28, 1988
filing date -
Aug 29, 1986
priority date (Note) -
Expired
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Abstract
The extrudability of linear polymers of ethylene such as low density copolymers of ethylene and C.sub.4 -C.sub.10 olefins (LLDPE) into thin films is improved by adding small amounts, e.g. 250 to 1000 ppm of each of a fluorocarbon polymer, e.g. polyvinylidene fluoride, and of a polyalkylsiloxane, e.g. poly(methyl-octyl-siloxane), to reduce melt fracture, head pressure and extruder power.
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