公开(公告)号：US20210151617A1

公开(公告)日：2021-05-20

申请号：US17252931

申请日：2019-07-08

Applicant: DSM IP ASSETS B.V.

Inventor： Yansen LAUW ,  Peter Leonardus Elisabeth Maria PASMANS ,  Mark Martinus Maria JANSSEN ,  Kurt VAN DURME

IPC: H01L31/049 ,  C08J5/18 ,  C08J5/12 ,  C08K3/22 ,  C08K3/04 ,  G02B5/08 ,  H01L31/048 ,  H01L31/054 ,  B32B27/08 ,  B32B27/20 ,  B32B27/32

Abstract: The present invention relates to a multi-layer material sheet comprising an NIR-reflective, translucent polymeric layer having a reflectance of more than 20% of all light with a wavelength from 750 nm to 1000 nm and a transmission of more than 50% of all light with a wavelength from 380 nm to 750 nm and an NIR-reflective, colored polymeric layer having a reflectance of more than 25% of all light with a wavelength from 1000 nm to 2100 nm. The present invention also relates to a backsheet suitable for use in a photovoltaic module, said backsheet comprising said multi-layer material sheet; and to a photovoltaic module comprising said backsheet.

公开(公告)号：US20210013351A1

公开(公告)日：2021-01-14

申请号：US16982117

申请日：2019-03-28

Applicant: DSM IP ASSETS B.V.

Inventor： Franciscus Gerardus Henricus VAN DUIJNHOVEN ,  Robert Hendrik Catharina JANSSEN ,  Pieter GIJSMAN ,  Mark Martinus Maria JANSSEN

IPC: H01L31/049 ,  B32B27/36 ,  B32B27/32 ,  B32B27/08 ,  B32B27/18

Abstract: 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.