BACK-SHEET COMPRISING POLYBUTYLENE TEREPHTALATE

The present invention relates to a back-sheet comprising a weatherable layer, a structural layer and a functional layer whereby one of the layers comprises polybutylene terephthalate and one or both of the other layers comprises a polyolefin. The layer comprising polybutylene terephthalate preferabl...

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Bibliographische Detailangaben
Hauptverfasser:	GIJSMAN, Pieter, VAN DUIJNHOVEN, Franciscus Gerardus Henricus, JANSSEN, Robert Hendrik Catharina, JANSSEN, Mark Martinus Maria
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS SEMICONDUCTOR DEVICES TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention relates to a back-sheet comprising a weatherable layer, a structural layer and a functional layer whereby one of the layers comprises polybutylene terephthalate and one or both of the other layers comprises a polyolefin. The layer comprising polybutylene terephthalate preferably further comprises an impact modifier. The impact modifier comprises an elastomer that contains functional groups that bond chemically and/or interact physically with the polybutylene terephthalate and wherein the elastomer constitutes the dispersed phase at a concentration of 1-49 Vol %. Preferably the elastomer contains epoxy functional groups. The polyolefin is selected from the group consisting of polyethylene homo or copolymers, polypropylene homo or (block-)copolymers, cyclic olefin copolymers, polymethylpentene, a thermoplastic polyolefine (TPO), or blends thereof.