Claims
- 1. A method for providing a cured coating on a substrate from a composition comprising a combination of at least one epoxy compound, at least one polyol and at least one photoinitiator wherein said method comprises:
(a) exposing at least one component of the composition to a source of radiation; and (b) applying the exposed composition onto a substrate thereby forming a coating upon the substrate.
- 2. The method according to claim 1 wherein the substrate comprising at least one member selected from the group consisting of metal, wood, concrete and cement.
- 3. The method according to claim 1 wherein the substrate comprises metal and the coating overlies a joint between at least two metal substrates.
- 4. The method according to claim 3 wherein the joint is formed by welding together at least two automotive body components.
- 5. The method according to claim 1 further comprising (c) heating the coated substrate to a temperature sufficient to improve adhesion of the composition to the substrate.
- 6. The method according to claim 1 wherein the epoxy compound comprises a cycloaliphatic epoxy compound.
- 7. The method according to claim 1 wherein the polyol comprises a polyether polyol, a polyester polyol or mixture thereof.
- 8. The composition according to claim 1 wherein the photoinitiator comprises a UV photo initiator.
- 9. The method according to claim 8 wherein the radiation comprises ultraviolet radiation.
- 10. The method according to claim 1 wherein the photoinitiator comprises an onium salt.
- 11. A curable composition comprising a combination of:
(a) at least one epoxy compound; (b) at least one resin; (c) at least one polyol; and (d) at least one photoinitiator which is present in amount sufficient to provide cross-linking of at least a portion of the composition upon exposure to radiation.
- 12. The composition according to claim 11 wherein the epoxy compound comprises a cycloaliphatic compound.
- 13. The composition according to claim 11 wherein the polyol comprises a polyester polyol, polyether polyol or mixture thereof.
- 14. The composition according to claim 11 wherein the photoinitiator comprises a UV photoinitiator.
- 15. The composition according to claim 14 wherein the photoinitiator comprises an onium salt.
- 16. The composition according to claim 11 further comprising (d) a thickening agent.
- 17. The composition according to claim 16 wherein the thickening agent comprises silica.
- 18. The composition according to claim 16 wherein the thickening agent is present in amount effective to provide a thixotropic composition.
- 19. The composition according to claim 16 further comprising (e) at least one monomeric material.
- 20. The composition according to claim 19 further comprising (f) at least one additive selected from the group consisting of expansion agents and gelling agents.
- 21. The composition according to claim 11 wherein the ratio of epoxy compound to polyol is about 1:1 to about 2:1.
- 22. A method of providing a self supporting article or layer comprising:
(a) providing a first component comprising at least one epoxy compound, and a second component comprising at least one acid source, with at least one of the first component and second component including a polyol, and (b) combining the first and second components so as to react the epoxy compound with the acid source.
- 23. The method according to claim 22 further comprising (c) introducing the reaction product of (b) onto a substrate.
- 24. The method according to claim 22 wherein both of the first and second components include a polyol.
- 25. A method according to claim 22 wherein the polyol comprises a polyester polyol, the epoxy compound comprises a cycloaliphatic epoxy compound, and the acid comprises phosphoric acid.
- 26. The method of claims 1 wherein said exposing is sufficient to increase the viscosity of the composition.
- 27. A composition for forming a self-supporting article or layer comprising:
(a) a first component comprising at least one epoxy compound, and (b) a second component comprising at least one acid source, wherein at least one of the first and second component includes a polyol.
- 28. The composition according to claim 27 wherein both the first and second components include a polyol.
- 29. A composition according to claim 26 wherein the polyol comprises a polyester polyol, the epoxy compound comprises a cycloaliphatic epoxy compound, and the acid comprises phosphoric acid.
CROSS REFERENCE TO RELATED PATENT APPLICATIONS
[0001] This is a continuation in part of U.S. patent application Ser. No. 09/197,107, filed on Nov. 20, 1998 that is in turn a continuation in part of Ser. No. 09/081,966, filed on May 20, 1998 and entitled “Curable Sealant Composition”. The disclosure of these prior filed patent applications is hereby incorporated by reference.
[0002] The subject matter herein also claims benefit under 35 U.S.C. 111(a), 35 U.S.C. 119(e) and 35 U.S.C. 120 of U.S. Provisional Patent Application Serial No. 60/047,290, filed on May 21, 1997, entitled “A UV-Curable Sealant Compositions”; and U.S. Provisional Patent Application Serial No. 60/079,204, filed on Mar. 24, 1998, entitled “Radiation Curable Sealant Compositions”. The disclosure of the aforementioned Provisional Patent Applications is hereby incorporated by reference.
[0003] The subject matter of the instant invention is also related to copending and commonly assigned Non-Provisional U.S. patent application Ser. No. 09/344,198, filed on Jun. 24, 1999, Ser. No. 09/300,930, filed on Apr. 28, 1999, Ser. No. 09/081,967, filed on May 20, 1998 and Ser. No. 09/197,124, filed on Nov. 20, 1998 and entitled “Novel Foaming Composition and Methods for Making and Using the Compositions”. The disclosure of these commonly assigned patent applications is hereby incorporated by reference.
Provisional Applications (2)
|
Number |
Date |
Country |
|
60047290 |
May 1997 |
US |
|
60079204 |
Mar 1998 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09448810 |
Nov 1999 |
US |
Child |
10091726 |
Mar 2002 |
US |
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
09197107 |
Nov 1998 |
US |
Child |
09448810 |
Nov 1999 |
US |
Parent |
09081966 |
May 1998 |
US |
Child |
09197107 |
Nov 1998 |
US |