Light transparent fluoropolymer composition and article

Patent metadata

Field	Value
Publication number	US-2017145183-A1
Application number	US-201515318556-A
Country	US
Kind code	A1
Filing date	Jun 3, 2015
Priority date	Jun 18, 2014
Publication date	May 25, 2017
Grant date	—

Abstract

Light transparent fluoropolymer composition having less than 2 percent haze, comprising at least one of alkali metal (e.g., lithium, sodium, and potassium) cation, alkali metal (e.g., lithium, sodium, and potassium) and a corresponding anion (e.g., CO 3 ,OH, OOCCH 3 ), alkaline earth metal cation (e.g., calcium, magnesium, strontium, and barium), or alkaline earth metal cation (e.g., calcium, magnesium, strontium, and barium) and a corresponding anion (e.g., CO 3 ,OH, OOCCH 3 ), wherein the light transparent fluoropolymer has at least 90% visible light transmission. Exemplary uses of light transparent fluoropolymer compositions described herein include as films (e.g., solar reflective films, solar transparent frontside photovoltaic films, commercial graphic overlay film, commercial graphic film, and tubing (e.g., transparent tubing for medical)).

First claim

1 . A light transparent fluoropolymer composition having less than 2 percent haze, comprising at least one of alkali metal cation and a corresponding anion or alkaline earth metal cation and a corresponding anion, wherein at least 0.01 percent by weight of the alkali metal cations and alkaline earth metal cations are present, based on the total weight of the composition, and wherein the light transparent fluoropolymer composition has at least 90% visible light transmission.

2 . The light transparent fluoropolymer composition of claim 1 ,
wherein at least 0.05 percent by weight of the alkali metal cations and alkaline earth metal cations are present, based on the total weight of the composition.

3 . The light transparent fluoropolymer composition of claim 1 , wherein the fluoropolymer is at least one of tetrafluoroethylene, vinylidene fluoride, vinyl fluoride, hexafluoropropylene, chlorotrifluoroethylene, fluoroalkyl vinyl ethers, fluoroalkoxy vinyl ethers, fluorinated styrenes, fluorinated siloxanes, hexafluoropropylene oxide, homopolymers of tetrafluoroethylene, copolymers of ethylene and TFE tetrafluoroethylene copolymers; copolymers of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride; homopolymers of vinylidene fluoride; copolymers of vinylidene fluoride; homopolymers of vinyl fluoride; copolymers of hexafluoropropylene and tetrafluoroethylene; copolymers of tetrafluoroethylene and propylene; copolymers of tetrafluoroethylene and (perfluorovinyl) ether; copolymers of tetrafluoroethylene, (perfluorovinyl) ether, and (perfluoromethyl vinyl) ether; copolymers of hexafluoropropylene, tetrafluoroethylene, and ethylene; homopolymers of chlorotrifluoroethylene; copolymers of ethylene and chlorotrifluoroethylene; homopolymers of hexafluoropropylene oxide; homopolymers of 4-fluoro-(2-trifluoromethyl)styrene; copolymers of tetrafluoroethylene and norbornene; copolymers of hexafluoropropylene and vinylidene fluoride; combinations thereof, or copolymers of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride.

4 . The light transparent fluoropolymer composition of claim 1 , further comprising polymethylmethacrylate.

5 . The light transparent fluoropolymer composition of claim 1 , further comprising at least one ultraviolet absorber.

6 . The light transparent fluoropolymer composition of claim 1 , further comprising at least one hindered amine light stabilizer.

7 . A light transparent fluoropolymer film comprising the light transparent fluoropolymer composition of claim 1 .

8 . The light transparent fluoropolymer film of claim 7 that is a multilayer film layers.

9 . The light transparent fluoropolymer film of claim 7 having an anti-reflective, structured major surface.

10 . The light transparent fluoropolymer film of claim 7 that is extensible at at least 25° C.

11 . An article having a surface structured light transparent fluoropolymer film comprising at least one of alkali metal cation and a corresponding anion or alkaline earth metal cation and a corresponding anion, wherein at least 0.01 percent by weight of the alkali metal cations and alkaline earth metal cations are present, based on the total weight of the fluoropolymer film, and wherein the surface structured light transparent fluoropolymer film has at least 95% visible light transmission.

12 . The article of claim 11 , wherein at least 0.05 percent by weight of the alkali metal cations and alkaline earth metal cations are present, based on the total weight of the fluoropolymer film.

Assignees

• 3M Innovative Properties Co

Inventors

• Hebrink Timothy J

Classifications

• C08K3/105

  Compounds containing metals of Groups 1 to 3 or of Groups 11 to 13 of the Periodic Table · CPC title

• B32B2264/102

  Oxide or hydroxide · CPC title

• B32B27/302

  comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers · CPC title

• C08K2003/265

  Calcium, strontium or barium carbonate · CPC title

• C08L2203/16

  used for films · CPC title