Pressure sensitive adhesive electrolyte

Patent metadata

Field	Value
Publication number	US-12043776-B2
Application number	US-202117317984-A
Country	US
Kind code	B2
Filing date	May 12, 2021
Priority date	May 14, 2020
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

A pressure sensitive adhesive polymer electrolyte having a peel adhesion by test A of more than 1 N/cm and an ionic conductivity by test B of more than 10−6 (ohm*cm)−1, prepared by polymerizing:5-60 wt % of acrylate monomer from the group of the (meth)acrylic esters having 4-15 carbon atoms, which as a homopolymer would have a Tg by test C of less than −30° C.,10-80 wt % of acrylate monomer from the group of the (meth)acrylic esters having 4-25 carbon atoms and containing at least one heteroatom, which as a homopolymer would have a Tg by test C of less than 100° C.,0.05-10 wt % of initiator,2-13 wt % of conducting salt,optionally plasticizer,and optionally solvent, which after the polymerization is typically removed at least partly,where optionally one or more of the components are added at least proportionally only during or after the polymerization.

First claim

The invention claimed is:

1. Pressure sensitive adhesive polymer electrolyte having a peel adhesion by test A of more than 1 N/cm and an ionic conductivity by test B of more than 10 −6 (ohm*cm) −1 , prepared by polymerizing a mixture comprising at least the following components:
a. 5-60 wt % of acrylate monomer selected from the group consisting of (meth)acrylic esters having 4-15 carbon atoms, which as a homopolymer would have a T g by test C of less than −30° C.,
b. 10-80 wt % of acrylate monomer selected from the group consisting of (meth)acrylic esters having 4-25 carbon atoms and containing at least one heteroatom, which as a homopolymer would have a T g by test C of less than 100° C.,
c. 0.05-10 wt % of initiator,
d. 2-13 wt % of conducting salt,
e. optionally plasticizer,
f. and optionally solvent,
where optionally one or more of the components are added at least proportionally only during or after the polymerization.

2. Pressure sensitive adhesive polymer electrolyte according to claim 1 , wherein the initiator is a thermal initiator and/or a photoinitiator.

3. Pressure sensitive adhesive polymer electrolyte according to claim 1 , wherein the polymerization is a UV polymerization.

4. Pressure sensitive adhesive polymer electrolyte according to claim 1 , wherein the mixture further comprises crosslinker.

5. Pressure sensitive adhesive polymer electrolyte according to claim 1 , characterized by a haze by test D of less than 10%.

6. Pressure sensitive adhesive polymer electrolyte claim 1 , characterized by a transmission by test E of more than 75%.

7. Pressure sensitive adhesive polymer electrolyte claim 1 , characterized by a colour parameter b* by test F of −6<b* <6.

8. Pressure sensitive adhesive polymer electrolyte claim 1 , characterized by a colour parameter a* by test F of −6<a* <6.

9. Pressure sensitive adhesive polymer electrolyte claim 1 , characterized by a heat resistance by test G of more than 60° C.

10. Pressure sensitive adhesive polymer electrolyte claim 1 , characterized by a holding power by test H of more than 10 min.

11. Pressure-sensitive adhesive tape comprising at least one layer of a pressure sensitive adhesive polymer electrolyte according to claim 1 .

12. Roll of product comprising (a) a roll core and (b) in web form, a pressure-sensitive adhesive tape according to claim 11 , with the pressure-sensitive adhesive tape being wound in multiple plies in the form of an Archimedean spiral on the roll core.

13. Method of using the pressure sensitive adhesive polymer electrolyte according to claim 1 or an adhesive tape comprising said pressure sensitive adhesive polymer electrolyte in an electrochromic glazing system or a battery.

14. Electrochromic system comprising a first half-cell A and a second half-cell B, with the two half-cells A and B being joined to one another over the full area or a partial area by way of a pressure sensitive adhesive polymer electrolyte according to claim 1 or an adhesive tape comprising said pressure sensitive adhesive polymer electrolyte.

15. Method for producing an electrochromic system, comprising joining a first half-cell A and a second half-cell B to one another to form an electrochromic system by lamination of a pressure sensitive adhesive polymer electrolyte according to claim 1 or an adhesive tape comprising said pressure sensitive adhesive polymer electrolyte.

16. Pressure-sensitive adhesive tape according to claim 11 , wherein the pressure-sensitive adhesive tape is double-sidedly adhesive.

17. Pressure-sensitive adhesive tape according to claim 11 , wherein the pressure-sensitive adhesive tape is an adhesive transfer tape.

Assignees

• Tesa Se

Inventors

• Klier Daniel

Classifications

• H01M2300/0097

  with adhesive layers · CPC title

• H01M2300/0082

  Organic polymers · CPC title

• H01M10/058

  Construction or manufacture · CPC title

• H01M10/0565 Primary

  Polymeric materials, e.g. gel-type or solid-type · CPC title

• C09J2203/33

  for batteries or fuel cells · CPC title