A back sheet for photovoltaic modules
AssigneeAgfa-Gevaert
InventorsFrank VANGAEVER, Ijya SRIVASTAVA, Hubertus VAN AERT
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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.
Claims17
1-10. (canceled)
A back sheet for a photovoltaic module, the back sheet comprising:
- a polymeric support;
- and
- a weather resistant layer including a binder containing a crosslinkable group and an aliphatic isocyanate crosslinking agent;
- wherein
- the weather resistant layer further includes an aromatic isocyanate crosslinking agent and/or an alicyclic isocyanate crosslinking agent;
- and
- a molar ratio of isocyanate groups of the aliphatic isocyanate crosslinking agent to isocyanate groups of the aromatic isocyanate crosslinking agent and/or the alicyclic crosslinking agent is ≦3.
Dependencies are inferred from the claim text.