Composition, coating, coating film, back sheet for solar cell module and solar cell module

Patent metadata

Field	Value
Publication number	US-11746252-B2
Application number	US-201816766313-A
Country	US
Kind code	B2
Filing date	Nov 20, 2018
Priority date	Nov 24, 2017
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

A composition containing a fluorine-containing polymer having a curable functional group and a pentamethylene diisocyanate-based curing agent. Also disclosed is a coating film obtained from the composition; a laminate including a substrate and a layer obtained from the composition; a back sheet for a solar cell module having a water-impermeable sheet and a coating film obtained from the composition, the coating film being formed on at least one side of the water-impermeable sheet; and a solar cell module having a water-impermeable sheet and a coating film obtained from the composition, the coating film being formed on at least one side of the water-impermeable sheet, and a sealant layer formed above the coating film.

First claim

The invention claimed is:

1. A composition, characterized in comprising:
a fluorine-containing polymer containing a curable functional group,
a pentamethylene diisocyanate-based curing agent,
a polyol compound selected from the group consisting of a polyol containing cyclohexane and a polyester polyol,
a benzene ring-containing melamine resin, and
an acid catalyst.

2. The composition according to claim 1 , wherein the fluorine-containing polymer containing a curable functional group comprises a polymeric unit based on a fluorine-containing monomer and a polymeric unit based on a curable functional group-containing monomer, and the curable functional group-containing monomer is at least one selected from a group consisting of a hydroxyl group-containing monomer, a carboxyl group-containing monomer, an amino group-containing monomer and a silicone-based vinyl monomer.

3. The composition according to claim 2 , wherein the fluorine-containing monomer is at least one selected from a group consisting of tetrafluoroethylene, chlorotrifluoroethylene, and vinylidene fluoride.

4. The composition according to claim 1 , wherein the composition further comprises a pigment.

5. The composition according to claim 1 , wherein the composition further comprises an ultraviolet absorbent.

6. The composition according to claim 1 , wherein the composition is a coating.

7. A coating film, characterized in being obtained from the composition according to claim 1 .

8. A laminate, characterized in comprising:
a substrate, and
a layer obtained from the composition according to claim 1 .

9. The laminate according to claim 8 , wherein the substrate is composed of a metal, a concrete, or a plastic.

10. A back sheet for a solar cell module, characterized in having:
a water-impermeable sheet; and
a coating film formed on at least one side of the water-impermeable sheet, the coating film being obtained from the composition according to claim 1 .

11. A solar cell module, characterized in having:
a water-impermeable sheet;
a coating film formed on at least one side of the water-impermeable sheet, the coating film being obtained from the composition according to claim 1 ; and
a sealant layer formed above the coating film.

Assignees

• Daikin Fluorochemicals China Co Ltd
• Daikin Ind Ltd

Inventors

• Liu Weiwei
• Nakagawa Hideto
• Nagato Masaru

Classifications

• H10F19/804

  Materials of encapsulations · CPC title

• H10F19/85

  Protective back sheets · CPC title

• C09D127/18 Primary

  Homopolymers or copolymers of tetrafluoroethene · CPC title

• C09D7/48

  Stabilisers against degradation by oxygen, light or heat · CPC title

• C09D7/61

  inorganic · CPC title