BONDING LAYER ON FLUOROPOLYMERS

• US 20090035565A1
• Filed: 07/17/2008
• Published: 02/05/2009
• Est. Priority Date: 08/01/2007
• Status: Active Grant

• Current Assignee: Commissariat a L'Energie Atomique (AES Corporation)
• Original Assignee: Commissariat a L'Energie Atomique (AES Corporation), Sofileta Co.
• Inventors: Benwadih, Mohamed, Verilhac, Jean-Marie, Serbutoviez, Christophe
• Granted Patent: US 8,617,713 B2
• Time in Patent Office: Days
• US Class Current: 428/339
• CPC Class Codes: C08J 2327/12 containing fluorine atoms
• CPC Class Codes: C08J 2327/18 Homopolymers or copolymers of tetrafluoroethylene
• CPC Class Codes: C08J 2400/14 Water soluble or water swellable polymers, e.g. aqueous gels
• CPC Class Codes: C08J 2427/00 Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
• CPC Class Codes: C08J 7/0427 with only one layer of a composition containing a polymer binder with more layers C08J7/042
• CPC Class Codes: C08J 7/043 Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: H10K 10/464 Lateral top-gate IGFETs comprising only a single gate
• CPC Class Codes: H10K 10/466 Lateral bottom-gate IGFETs comprising only a single gate
• CPC Class Codes: H10K 10/471 the gate dielectric comprising only organic materials
• CPC Class Codes: H10K 10/474 the gate dielectric comprising a multilayered structure
• CPC Class Codes: H10K 85/113 Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
• CPC Class Codes: Y10T 428/269 including synthetic resin or polymer layer or component
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers

Abstract

The invention relates to a device comprising a layer made from a fluoropolymer, of which at least part of the surface is covered with a composition comprising a polymer having at least one fluorinated function and at least one acid or base function and forming a bonding layer on said fluoropolymer, said bonding layer being fully or partly covered by another layer.

Claims

1. A device comprising a layer made from a fluoropolymer, of which at least part of the surface is covered with a composition comprising a polymer having at least one fluorinated function and at least one acid or base function and forming a bonding layer on said fluoropolymer, said bonding layer being fully or partly covered by another layer.

2. The device as claimed in claim 1, wherein the acid function is provided by a carboxylic, phosphonic, sulfonic, sulfone or Si(CH₃)₃ function.

3. The device as claimed in claim 1, wherein the base function is provided by an amine.

4. The device as claimed in claim 1, wherein the monomer having at least one fluorinated function is of the same type as the monomer present in the fluoropolymer.

5. The device as claimed in claim 1, wherein the fluorinated function and the acid or base function are carried by the same monomer.

6. The device as claimed in claim 1, wherein the fluoropolymer is polyterafluoruethylene (PTFE) or Cytop®

.

7. The device as claimed in claim 1, wherein the polymer having at least one fluorinated function and at least one acid or base function is Nafion®

, Hyfion Ion®

or Flemion®

.

8. The device as claimed in claim 1, wherein the composition forming the bonding layer further comprises a compound capable of interacting with the acid or base functions of the polymer.

9. The device as claimed in claim 1, wherein the composition forming the bonding layer further comprises a material of interest, advantageously a resin, an ink or a dielectric.

10. The device as claimed in claim 1, wherein the bonding layer has a thickness of between 20 nm and 2 μ

m.

11. The device as claimed in claim 1, wherein the device is a transistor.

12. The device as claimed in claim 1, wherein the layer covering all or part of the bonding layer is an electrode, a semiconductive material, a dielectric, a layer of ink or a layer of adhesive.

13. A method for fabricating a device as claimed in claim 1, comprising the following steps:

a step of deposition, on at least part of the outer surface of afluoropolymer layer, of a composition comprising a polymer having at least one fluorinated function and at least one acid or base function and forming a bonding layer after drying;

a step of deposition of another layer on this bonding layer.

14. The fabrication method as claimed in claim 13, wherein the depositions are carried out by dip-coating, spin-coating or printing.

15. The fabrication method as claimed in claim 13, wherein the composition comprising a polymer having at least one fluorinated function and at least one acid or base function contains a solvent, advantageously isopropanol.