Method for preparing polypropylene (PP) films having improved ultraviolet (UV) radiation stability and service life
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United States of America Patent
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Jan 14, 2014
Grant Date -
Nov 8, 2012
app pub date -
Jul 19, 2012
filing date -
Mar 2, 2009
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Abstract
Method for preparing stretched polypropylene films from a polypropylene resin that includes a low molecular weight hindered amine light stabilizer, and a high molecular weight hindered amine light stabilizer, and optionally a first antioxidant, and a second antioxidant. Also provided are methods for the preparation of woven jumbo polypropylene bags from the stretched polypropylene film.
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