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A New Platform of Crosslinkable Semi-crystalline Ethylene and Propylene based Copolymers

IP.com Disclosure Number: IPCOM000248109D
Publication Date: 2016-Oct-26

Publishing Venue

The IP.com Prior Art Database

Abstract

It has been found that certain propylene-ethylene resins can be crosslinked. The potential crosslinkability of ethylene and propylene based resins can be beneficial for several applications in particular in applications or environments where a combination of flexibility/high toughness and protection against any outside interferences such as mechanical and weathering is needed. Moreover, several of these resins also exhibit a high degree of transparency which is highly valued for example as embedding sheets for photovoltaic cells.

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A New Platform of Crosslinkable Semi-crystalline Ethylene and Propylene based Copolymers

Abstract: It has been found that certain propylene-ethylene resins can be crosslinked. The potential crosslinkability of ethylene and propylene based resins can be beneficial for several applications in particular in applications or environments where a combination of flexibility/high toughness and protection against any outside interferences such as mechanical and weathering is needed. Moreover, several of these resins also exhibit a high degree of transparency which is highly valued for example as embedding sheets for photovoltaic cells.

Background:

Transparent, low modulus resins can be used in several applications. For example, the encapsulant sheet resin in a photovoltaic (PV) module, embedding the photovoltaic cells and protecting them from any outside interference (mechanical, weathering, …), needs to exhibit both properties. As a PV module also needs to withstand temperatures up to 70-80°C and in case the melt temperature of such resin is in this region, the resin also needs to be crosslinkable. Typical resins already promoted in such type of applications are ethylene-vinyl acetate resins, in particular those with high vinyl acetate content (>25 wt%) or plastomer resins.

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Development:

We have shown that certain ethylene and propylene basedresins (mono- and dual-reactor)...