Process aid for melt processable polymers that contain hindered amine light stabilizer
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United States of America Patent
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Issued Date -
Feb 2, 2006
app pub date -
Jul 6, 2005
filing date -
Jul 29, 2004
priority date (Note) -
Abandoned
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Abstract
Extrusion processability of non-fluorinated melt-processable polymers that contain hindered amine light stabilizer (HALS) is improved by introducing a fluoropolymer process aid comprising a) copolymerized units of i) at least 15 weight percent vinylidene fluoride and ii) at least one other fluorine-containing copolymerizable monomer; b) a polycaprolactone polymer; and c) a copolymer of a C.sub.2-C.sub.4 alpha olefin with at least 1 weight percent of an .alpha.,.beta.-ethylinically unsaturated monomer selected from the group consisting of a carboxylic acid, a dicarboxylic acid, a metal salt of a carboxylic acid, a metal salt of a dicarboxylic acid and mixtures thereof.
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