Composition and laminated body

Patent metadata

Field	Value
Publication number	US-11072153-B2
Application number	US-201615562018-A
Country	US
Kind code	B2
Filing date	Mar 29, 2016
Priority date	Mar 31, 2015
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

The invention provides a novel composition capable of providing a film or coat exhibiting excellent adhesiveness to a water-impermeable sheet and to an EVA encapsulant layer even without corona discharge treatment. The composition of the invention contains a fluorine-containing polymer and a polyol compound having a hydroxyl value of 10 to 300. The polyol compound is contained in an amount of not less than 0.1 mass % but less than 100 mass % relative to the fluorine-containing polymer.

First claim

The invention claimed is:

1. A structure comprising:
a plastic substrate and
a composition or a film obtained from the composition that has been applied to the plastic substrate;
the composition comprising:
a fluorine-containing polymer; and
a polyol compound having a hydroxyl value of 10 to 300 and a number average molecular weight of 300 to 4000,
the polyol compound being contained in an amount of not less than 0.1 mass % but less than 100 mass % relative to the fluorine-containing polymer,
wherein the fluorine-containing polymer is at least one selected from the group consisting of curable functional group-containing fluorine-containing polymers, polyvinyl fluoride, and polyvinylidene fluoride,
wherein the curable functional group-containing fluorine-containing polymer contains a polymerized unit based on a fluorine-containing monomer and a polymerized unit based on a hydroxy-containing vinyl ether,
wherein the polyvinyl fluoride and the polyvinylidene fluoride are free from a curable functional group, and
wherein the polyol compound is at least one selected from the group consisting of polyester polyols, polycarbonate polyols, polyether polyols, and polybutadiene polyols.

2. The structure according to claim 1 ,
wherein the amount of the polyol compound is 0.1 to 50 mass % relative to the fluorine-containing polymer.

3. The structure according to claim 1 , the composition further comprising a curing agent.

4. A laminate comprising:
a water-impermeable sheet; and
a layer formed from a composition comprising:
a fluorine-containing polymer; and
a polyol compound having a hydroxyl value of 10 to 300 and a number average molecular weight of 300 to 4000,
the polyol compound being contained in an amount of not less than 0.1 mass % but less than 100 mass % relative to the fluorine-containing polymer,
wherein the fluorine-containing polymer is at least one selected from the group consisting of curable functional group-containing fluorine-containing polymers, polyvinyl fluoride, and polyvinylidene fluoride,
wherein the curable functional group-containing fluorine-containing polymer contains a polymerized unit based on a fluorine-containing monomer and a polymerized unit based on a hydroxy-containing vinyl ether,
wherein the polyvinyl fluoride and the polyvinylidene fluoride are free from a curable functional group, and
wherein the polyol compound is at least one selected from the group consisting of polyester polyols, polycarbonate polyols, polyether polyols, and polybutadiene polyols.

5. The laminate according to claim 4 , which is a back sheet for a solar cell module.

6. A solar cell module comprising:
an encapsulant layer; and
the laminate according to claim 4 .

7. The structure according to claim 1 , wherein the polyol compound is at least one selected from the group consisting of polycarbonate polyols and polybutadiene polyols.

8. The laminate according to claim 4 , wherein the polyol compound is at least one selected from the group consisting of polycarbonate polyols and polybutadiene polyols.

Assignees

• Daikin Ind Ltd

Inventors

• Nakagawa Hideto
• Ozaki Hidenori
• Gobou Kenji
• Ogita Koichiro

Classifications

• C08L27/14 Primary

  Homopolymers or copolymers of vinyl fluoride · CPC title

• H10F19/85

  Protective back sheets · CPC title

• C08L69/00

  Compositions of polycarbonates; Compositions of derivatives of polycarbonates · CPC title

• C08L67/00

  Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain (of polyester-amides C08L77/12; of polyester-imides C08L79/08); Compositions of derivatives of such polymers · CPC title

• C08L67/025

  containing polyether sequences · CPC title