Non-silicone additives in release coating materials
Release coating formulations are described which include one or more non-silicone additives. The formulations achieve reduction in release coating cost by replacing silicone base polymer in a release coating system without detrimental effects on release performance. The release coating formulations include one or more non-silicone additive(s) and silicone base polymer. The non-silicone additive can include stearyl methacrylate. Also described are release liners, adhesive articles, and methods utilizing the release coating formulations.
1. A release coating material comprising:
at least one silicone base polymer, wherein the silicone base polymer is a vinyl functional polydimethylsiloxane;
at least one non-silicone additive, wherein the non-silicone additive is a hydrophobic acrylate monomer.
2. The release coating of claim 1 wherein the silicone base polymer is vinyl terminated.
3. The release coating of claim 1 wherein the silicone base polymer constitutes from 10% to 95% of the release coating material.
4. The release coating of claim 1 wherein the non-silicone additive is selected from the group consisting of stearyl methacrylate, lauryl methacrylate, lauryl acrylate, and combinations thereof.
5. The release coating of claim 1 wherein the non-silicone additive is stearyl methacrylate.
6. The release coating of claim 1 wherein the non-silicone additive constitutes from 5% to 90% of the release coating material.
7. The release coating of claim 1 further comprising:
at least one crosslinking agent.
8. The release coating of claim 7 wherein the crosslinking agent is a silicone hydride agent.
9. The release coating of claim 8 wherein the weight ratio of the silicone hydride agent to the silicone base polymer is within a range of from 1.2:1 to 3.0:1.
10. The release coating of claim 1 further comprising:
at least one catalyst.
11. The release coating of claim 10 wherein the catalyst is a platinum catalyst.
12. The release coating of claim 11 wherein the amount of the platinum catalyst is within a range of from 10 ppm to 140 ppm.
13. A release liner comprising:
a flexible liner defining a first face and an oppositely directed second face; and
a release coating material disposed on at least a portion of the first face of the liner, the release coating material including at least one silicone base polymer and at least one non-silicone additive, wherein the silicone base polymer is a vinyl functional polydimethylsiloxane, and wherein the non-silicone additive is an acrylate monomer.
14. The release liner of claim 13 wherein the silicone base polymer is vinyl terminated.
15. The release liner of claim 13 wherein the silicone base polymer constitutes from 10% to 95% of the release coating material.
16. The release liner of claim 13 wherein the non-silicone additive is selected from the group consisting of stearyl methacrylate, lauryl methacrylate, lauryl acrylate, and combinations thereof.
17. The release liner of claim 13 wherein the non-silicone additive is stearyl methacrylate.
18. The release liner of claim 13 wherein the non-silicone additive constitutes from 5% to 90% of the release coating material.
19. The release liner of claim 13 further comprising:
at least one crosslinking agent.
20. The release liner of claim 19 wherein the crosslinking agent is a silicone hydride agent.
21. The release liner of claim 20 wherein the weight ratio of the silicone hydride agent to the silicone base polymer is within a range of from 1.2:1 to 3.0:1.
22. The release liner of claim 13 wherein the release coating material further includes at least one catalyst.
23. The release liner of claim 22 wherein the catalyst is a platinum catalyst.
24. The release liner of claim 23 wherein the amount of the platinum catalyst is within a range of from 10 ppm to 140 ppm.
25. The release liner of claim 13 wherein the liner is selected from the group consisting of filmic liners, paper liners, and coated paper liners.
26. An adhesive article comprising:
a substrate;
adhesive disposed on the substrate;
a release liner having a release coating material disposed on at least a portion of the liner, the release coating material of the liner disposed on the adhesive, the release coating material including at least one silicone base polymer and at least one non-silicone additive, wherein the silicone base polymer is vinyl functional polydimethylsiloxane, and wherein the non-silicone additive is an acrylate monomer.
27. The adhesive article of claim 26 wherein the silicone base polymer constitutes from 10% to 95% of the release coating material.
28. The adhesive article of claim 26 wherein the non-silicone additive is selected from the group consisting of stearyl methacrylate, lauryl methacrylate, lauryl acrylate, and combinations thereof.
29. The adhesive article of claim 26 wherein the non-silicone additive is stearyl methacrylate.
30. The adhesive article of claim 26 wherein the non-silicone additive constitutes from 5% to 90% of the release coating material.
31. The adhesive article of claim 26 further comprising:
at least one crosslinking agent.
32. The adhesive article of claim 31 wherein the crosslinking agent is a silicone hydride agent.
33. The adhesive article of claim 26 wherein the release coating material further includes at least one catalyst.
34. The adhesive article of claim 33 wherein the catalyst is a platinum catalyst.
35. The adhesive article of claim 26 wherein the substrate is selected from the group consisting of filmic substrates, paper substrates, and combinations thereof.
36. The adhesive article of claim 26 wherein the adhesive is a pressure sensitive adhesive.
37. The adhesive article of claim 26 wherein the liner is selected from the group consisting of filmic liners, paper liners, and coated paper liners.