Transparent polymer articles of low thickness
OwnerDavid George Leppard, François Gugumus +1inventors
InventorsDAVID GEORGE LEPPARD, François Gugumus, Michela Bonora
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Abstract
The novel transparent polyolefin, polyester or polyamide article disclosed is stabilized against the effects of light, oxygen, heat and agressive chemicals by addition of 0.005-0.30% by weight the polymeric substrate of a hydroxyphenyl triazine UV absorber, and is characterized by its thickness between 1 and 500 μm. Preferred polyolefin articles thus stabilized are agricultural films containing as further stabilizer a sterically hindered amine. The novel compositions act as selective UV filter especially useful in agriculture.
Claims15
Transparent polyolefin, polyester or polyamide article having a thickness between 1 and 200 μm, which is stabilized against the effects of light, oxygen, heat and/or agressive chemicals by addition of 0.005-0.30% by weight, based on the polyolefin, polyester or polyamide, of a hydroxyphenyl triazine UV absorber, and which article further contains a sterically hindered amine stabilizer in an amount of 0.01-6% by weight of the polyolefin, polyester or polyamide.
Dependencies are inferred from the claim text.