BLENDED FLUOROSILICONE RELEASE MATERIALS

• US 20110244226A1
• Filed: 12/14/2009
• Published: 10/06/2011
• Est. Priority Date: 12/17/2008
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Seth, Jayshree, Kumar, Ramesh C., Semonick, Michael A., Qiu, Zai-Ming, Boulos, Marie A.
• Granted Patent: US 8,568,848 B2
• Time in Patent Office: Days
• US Class Current: 428/352
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 2666/14 Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
• CPC Class Codes: C08L 27/12 containing fluorine atoms
• CPC Class Codes: C08L 27/16 Homopolymers or copolymers or vinylidene fluoride
• CPC Class Codes: C08L 83/00 Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 83/08 containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
• CPC Class Codes: C09J 7/401 characterised by the release coating composition
• CPC Class Codes: Y10T 428/1457 Silicon
• CPC Class Codes: Y10T 428/2839 with release or antistick coating
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

Blended release materials including a blend of a fluoro-functional silicone release polymer and a fluoropolymer are described. Exemplary fluoropolymers include fluoroolefin-based polymers and linear fluoropolymers including linear fluoroacryaltes. Articles including such release materials such as release liners, and adhesive articles, including silicone adhesive articles, are also described.

Claims

1. A release material comprising a blend of a fluoro-functional silicone release polymer and a linear fluoropolymer, wherein the weight ratio of the fluoro-functional silicone release polymer to the linear fluoropolymer is between 3:

1 and 1;

20, inclusive.

4. The release material according to claim 1, wherein the linear fluoropolymer is a non-silicone, linear fluoropolymer.

5. The release material according to claim 4, wherein the linear fluoropolymer is a fluoroacrylate polymer.

6. The release material according to claim 5, wherein the fluoroacrylate polymer is derived from at least one monomer defined by the formula

7. The release material according to claim 6, wherein the fluoroacrylate polymer is derived from at least one C4 MH monomer defined by the formula

8. The release material of claim 7, wherein the linear fluoropolymer comprises a copolymer of the C4 MH monomer and at least one mono-(meth)acrylate.

16. A release liner comprising a substrate and the release material according to claim 1 bonded to at least one major surface of the substrate.

17. An adhesive article comprising an adhesive having a first major surface and a second major surface, wherein the first major surface of the adhesive is in contact with the release material claim 1.

18. The adhesive article according to claim 17, wherein the adhesive comprises a silicone adhesive.

19. The adhesive article of claim 18, wherein the silicone adhesive comprises a poly (diorganosiloxane).

20. The adhesive article according to claim 18, wherein the silicone adhesive comprises a polydiorganosiloxane-polyurea block copolymer.

21. The adhesive article according to claim 18, wherein the silicone adhesive comprises a polydiorganosiloxane-polyoxamide copolymer.

22. A coating comprising the release material according to claim 1.

2. A release material comprising a blend of a fluoro-functional silicone release polymer and a linear fluoroacrylate polymer, wherein the linear fluoroacrylate polymer is derived from at least one monomer defined by the formula

3. The release material of claim 2, wherein the weight ratio of the fluoro-functional silicone release polymer to the linear fluoropolymer is between 10:

1 and 1;

20.

9. (canceled)

10. A release material comprising a blend of a fluoro-functional silicone release polymer and a fluoroolefin-based polymer.

11. The release material of claim 10, wherein the fluoroolefin-based polymer comprises the reaction product of at least one monomer selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, vinyl fluoride, and vinylidene fluoride.

12. The release material of claim 10, wherein the fluoroolefin-based polymer is an elastomeric fluoroolefin-based polymer or a thermoplastic fluoroolefin-based polymer.

14. The release material of claim 12, wherein the fluoroolefin-based polymer is a terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride.

15. The release material according to claim 14, wherein the fluoroolefin-based polymer comprises the reaction product of at least one additional monomer selected from the group consisting of a non-fluorinated olefin, a chlorinated olefin, and a fluorinated vinyl ether.

13. (canceled)