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US 2024/0176201 A1Published application
Composition for electrode of electrochromic device
AssigneeSolvay Specialty Polymers Italy S.P.A.
InventorsAlessio Marrani, Stefano Millefanti, Claudio Oldani
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Abstract
The present invention relates to a composition for making an electrolyte layer suitable for use in an electrochromic device, combining transparency and adhesion to glazing, to an electrolyte layer obtained therefrom, to an electrochromic device comprising the same, and to its use as glazing.
Claims22
A liquid composition [composition (CL)], said composition (CL) comprising:
- (i) at least one vinylidene fluoride copolymer comprising recurring units derived from vinylidene fluoride in an amount exceeding 50% mol of all its recurring units, and, optionally, recurring units derived from at least one additional fluorinated monomer different from vinylidene fluoride [polymer (F)];
- (ii) at least one (meth)acrylic polymer comprising recurring units derived from at least one (meth)acrylic monomer in an amount exceeding 50% mol of all its recurring units [polymer (M)];
- (iii) at least one organic compound possessing a boiling point of less than 125° C. [solvent (Slow)];
- (iv) at least one organic compound possessing a boiling point of more than 150° C. [solvent (Shigh)];
- and
- (iv) at least one lithium salt [salt (L)],
- wherein the ratio by weight of the polymer (F) to the polymer (M) is at least 3.0.
4 more elements
(canceled)
A self-supported gelled polymer electrolyte film [film (FGE)], said film (FGE) comprising:
- (i) at least one vinylidene fluoride copolymer comprising recurring units derived from vinylidene fluoride in an amount exceeding 50% mol of all its recurring units, and, optionally, recurring units derived from at least one additional fluorinated monomer different from vinylidene fluoride [polymer (F)];
- (ii) at least one (meth)acrylic polymer comprising recurring units derived from at least one (meth)acrylic monomer in an amount exceeding 50% mol of all its recurring units [polymer (M)];
- (iii) at least one organic compound possessing a boiling point of more than 150° C. [solvent (Shigh)];
- and
- (iv) at least one lithium salt [salt (L)],
- wherein the ratio by weight of polymer (F) to polymer (M) is at least 3.0.
3 more elements
(canceled)
Dependencies are inferred from the claim text.