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US 12,428,507 B2Granted
Polyolefin compositions for photovoltaic encapsulant films
AssigneeDow Global Technologies LLC
InventorsYunfeng Yang, Chao He, Weiming Ma, Hongyu Chen, Yabin Sun, Kainan Zhang, Jeffrey M. Cogen, Timothy J. Person, Yuyan Li, Hong Yang
Life of this patent
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Abstract
The present disclosure relates to an encapsulant film made from a curable composition comprising: (A) a polyolefin polymer; (B) an organic peroxide; (C) a silane coupling agent; and (D) a co-agent comprising a monocyclic organosiloxane of formula (I).
Claims13
A curable composition for forming an encapsulant film, wherein the composition comprises:
- a) from 85 wt % to 99.88 wt % of an ethylene/1-octene copolymer comprising of greater than 60 wt % ethylenic units and at least 30 wt % 1-octene units and having a density of from 0.870 g/cc to 0.890 (ASTM D792) and a melt index of from 1.0 g/10 min to 50.0 g/10 min (ASTM D1238, at 190° C./2.16 kg);
- b) from 0.1 wt % to 5 wt % of an organic peroxide;
- c) from 0.01 wt % to 2 wt % of a silane coupling agent;
- and
- d) from 0.01 wt % to 5 wt % of a co-agent comprising a monocyclic organosiloxane of formula (I):
- wherein subscript n is an integer greater than or equal to 3;
- each R1 is independently a (C2-C4)alkenyl;
- and each R2 is independently H, (C1-C4)alkyl, phenyl, or R1.
5 more elements
An encapsulant film comprising a crosslinked polymeric composition comprising the reaction product of:
- a) from 85 wt % to 99.88 wt % of an ethylene/1-octene copolymer comprising of greater than 60 wt % of ethylenic units and at least 30 wt % 1-octene units and having a density of from 0.870 g/cc to 0.890 g/cc (ASTM D792) and a melt index of from 1.0 g/10 min to 50.0 g/10 min (ASTM D1238, at 190° C./2.16 kg);
- b) from 0.1 wt % to 5 wt % of an organic peroxide;
- c) from 0.01 wt % to 2 wt % of a silane coupling agent;
- and
- d) from 0.01 wt % to 5 wt % of a co-agent comprising a monocyclic organosiloxane of formula (I):
- wherein subscript n is an integer greater than or equal to 3;
- each R1 is independently a (C2-C4)alkenyl;
- and each R2 is independently H, (C1-C4)alkyl, phenyl, or R1;
- and an average initial glass adhesion of greater than 60 N/cm.
6 more elements
Dependencies are inferred from the claim text.