A BACK SHEET FOR PHOTOVOLTAIC MODULES
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United States of America Patent
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Issued Date -
Nov 5, 2015
app pub date -
Dec 17, 2013
filing date -
Dec 21, 2012
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Abstract
A back sheet for a photovoltaic module includes a polymeric support and a weather resistant layer, the weather resistant layer including a binder containing a crosslinkable group and an aliphatic isocyanate crosslinking agent, characterized in that the weather resistant layer further includes an aromatic or an alicyclic isocyanate crosslinking agent, and wherein the molar ratio of the isocyanate groups of the aliphatic isocyanate crosslinking agents to the isocyanate groups of the aromatic and/or alicyclic crosslinking agents is ≦3.
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