Claims
- 1. A label comprising:
(A) a polymer facestock having an upper surface and a lower surface; and (B) an adhesive layer derived from at least one two-part, high solids curable adhesive overlying the lower surface of the polymer facestock.
- 2. The label of claim 1, wherein the adhesive cures without application of an external energy source.
- 3. The label of claim 1, wherein the two-part curable adhesive further comprises a tackifier or plasticizer, or a mixture thereof.
- 4. The label of claim 1, wherein the two-part curable adhesive has an initial tack sufficient to remain in a position when applied to a substrate.
- 5. The label of claim 1, wherein the two-part curable adhesive, when applied to the label, has a viscosity in the range from about 30,000 cps to about 120,000 cps.
- 6. The label of claim 1, wherein the coat weight of the adhesive layer is from about 5 to about 30 g/m2.
- 7. The label of claim 1, wherein the polymer facestock is a polyester or poly-α-olefin or metallized polyolefin, or polylactic acid polymer.
- 8. The label of claim 7, wherein the polymer facestock is a biaxially oriented polypropylene or a biaxially oriented polyethylene terephthalate.
- 9. The label of claim 1, wherein the upper surface of the polymer facestock is corona treated or flame treated.
- 10. The label of claim 1, further comprising a barrier or tie coating layer between the polymer facestock and the two-part curable adhesive.
- 11. The label of claim 1, further comprising a print layer overlying the upper surface of the polymer facestock.
- 12. The label of claim 11, further comprising a transparent protective layer overlying the print layer.
- 13. The label of claim 11, wherein the protective layer comprises a polyamide, polyurethane, cellulosic polymer, silicone polymer, or any combination thereof.
- 14. The label of claim 11, further comprising a transparent abrasion, chemical, and/or ultraviolet resistant layer overlying the print layer.
- 15. The label of claim 11, further comprising an adhesion promoting layer between the upper surface of the polymer facestock and the print layer.
- 16. The label of claim 11, further comprising a layer of ink receptive composition between the upper surface of the polymer facestock layer and the print layer.
- 17. The label of claim 1, wherein the adhesive comprises (a) an epoxy resin and a primary amine, a carboxylic acid or a carboxylic anhydride or a mixture of two or more thereof; (b) a cyclic anhydride and a primary amine; (c) an oxazoline and a primary amine, a carboxylic acid or a carboxylic anhydride or a mixture of two or more thereof; (d) a carbodiimide and primary amine or a carboxylic acid; or (e) an isocyanate and a primary amine, an alcohol or a carboxylic acid, or a mixture of two or more thereof; or a mixture of two or more of (a)-(e).
- 18. The label of claim 1, wherein the two-part curable adhesive comprises at least one epoxy resin which is a diglycidyl ether of a bisphenol, a diglycidyl ether of an aliphatic glycol, an epoxidized olefin, a polymer- or rubber-modified epoxy resin, or a mixture of two or more thereof and an epoxy curing agent.
- 19. The label of claim 18, wherein the epoxy curing agent is a primary amine, diamine or polyamine or a carboxylic acid, dicarboxylic acid, polycarboxylic acid, or an anhydride of such acid.
- 20. The label of claim 18, wherein the two-part curable adhesive further comprises a reactive diluent.
- 21. The label of claim 1, wherein the two-part curable adhesive comprises (b) a cyclic anhydride and a primary amine.
- 22. The label of claim 21, wherein the cyclic anhydride comprises a maleated polyolefin, terephthalic anhydride, naphthalic anhydride; pyromellitic dianhydride; 2,3,6,7-naphthalene tetracarboxylic dianhydride; 3,3′,4,4′-diphenyl tetracarboxylic dianhydride; 1,2,5,6-naphthalene tetracarboxylic dianhydride; 2,2′,3,3′-diphenyl tetracarboxylic dianhydride; 2,2-bis(3,4-dicarboxyphenyl) propane dianhydride; bis(3,4-dicarboxyphenyl) sulfone dianhydride; 3,4,9,10-perylene tetracarboxylic dianhydride; bis(3,4-dicarboxyphenyl) ether dianhydride; naphthalene-1,2,4,5-tetracarboxylic dianhydride; naphthalene-1,4,5,8-tetracarboxylic dianhydride; 2,6-dichloronaphthalene-1,4,5,8-tetracarboxylic dianhydride; 2,7-dichloronaphthalene-1,4,5,8-tetracarboxylic dianhydride; 2,3,6,7-tetrachloronaphthalene-1,4,5,8-tetracarboxylic dianhydride; phenanthrene-1,8,9,10-tetracarboxylic dianhydride; 2,2-bis(2,3-dicarboxyphenyl) propane dianhydride; 1,1-bis(2,3-dicarboxyphenyl) ethane dianhydride; 1,1-bis(3,4-dicarboxyphenyl) ethane dianhydride; bis(2,3-dicarboxyphenyl) methane dianhydride; bis(3,4-dicarboxyphenyl) methane dianhydride; bis (3,4-dicarboxyphenyl) sulfone dianhydride; benzene-1,2,3,4-tetracarboxylic dianhydride; 3,4,3′,4′-benzophenone tetracarboxylic dianhydride; 2,3,2′,3′-benzophenone tetracarboxylic dianhydride; 2,3,3′,4′-benzophenone tetracarboxylic dianhydride; pyrazine-2,3,5,6-tetracarboxylic dianhydride; thiophene-2,3,4,5-tetracarboxylic dianhydride, similar dianhydrides, and mixtures of two or more of the foregoing.
- 23. The label of claim 21, wherein the primary amine comprises methylene dianiline, meta-phenylene diamine, paraphenylene diamine, 4,4′-diaminodiphenyl sulfone, 3,3′-diaminodiphenyl sulfone, 4,4′-diaminodiphenyl oxide, 2,4-diaminotoluene, 3,3′-diaminodiphenyl methane, 1,3-diamino propane, 1,4-diamino butane, 1,6-diamino hexane, 1,8-diamino octane, 1,12-diamino dodecane and mixtures of two or more thereof.
- 24. The label of claim 1, wherein the two-part curable adhesive comprises c) an oxazoline and a primary amine, a carboxylic acid or anhydride or a mixture of two or more thereof.
- 25. The label of claim 24, wherein the oxazoline comprises 4,4′, 5,5′-tetrahydro-2,2′-bisoxazole; a 2,2′-(alkanediyl) bis [4,5-dihydrooxazole], e.g., 2,2′-(1,4-butanediyl) bis [4,5-dihydrooxazole]; and 2,2′-(1-methyl-1,3-propanediyl) bis (4,5-dihydrooxazole); a 2,2′-(arylene) bis [4,5-dihydrooxazole], e.g., 2,2′-(1,4-phenylene) bis [4,5-dihydrooxazole], 2,2′(1,5-naphthalenyl) bis [4,5-dihydrooxazole] and 2,2′-(1,8-anthracenyl) bis [4,5-dihydrooxazole]; and alkylene bis 2-(arylene) [4,5-dihydrooxazole], e.g., methylene bis 2-(1,4-phenylene) [4,5-dihydrooxazole]; a 2,2′,2″-(arylene) tris [4,5-dihydrooxazole], e.g., 2,2′,2″-(1,3,5-phenylene) tris[4,5-dihydrooxazole]; oligomeric materials with pendent oxazoline groups such as poly [2-(alkenyl) 4,5-hydrooxazole], e.g., poly [2-(2-propenyl) 4,5-dihydrooxazole], and mixtures of two or more thereof.
- 26. The label of claim 24, wherein the carboxylic acid or cyclic anhydride comprises a maleated polyolefin, terephthalic anhydride, naphthalic anhydride; pyromellitic dianhydride; 2,3,6,7-naphthalene tetracarboxylic dianhydride; 3,3′,4,4′-diphenyl tetracarboxylic dianhydride; 1,2,5,6-naphthalene tetracarboxylic dianhydride; 2,2′,3,3′-diphenyl tetracarboxylic dianhydride; 2,2-bis(3,4-dicarboxyphenyl) propane dianhydride; bis(3,4-dicarboxyphenyl) sulfone dianhydride; 3,4,9,10-perylene tetracarboxylic dianhydride; bis(3,4-dicarboxyphenyl) ether dianhydride; naphthalene-1,2,4,5-tetracarboxylic dianhydride; naphthalene-1,4,5,8-tetracarboxylic dianhydride; 2,6-dichloronaphthalene-1,4,5,8-tetracarboxylic dianhydride; 2,7-dichloronaphthalene-1,4,5,8-tetracarboxylic dianhydride; 2,3,6,7-tetrachloronaphthalene-1,4,5,8-tetracarboxylic dianhydride; phenanthrene-1,8,9,10-tetracarboxylic dianhydride; 2,2-bis(2,3-dicarboxyphenyl) propane dianhydride; 1,1-bis(2,3-dicarboxyphenyl) ethane dianhydride; 1,1-bis(3,4-dicarboxyphenyl) ethane dianhydride; bis(2,3-dicarboxyphenyl) methane dianhydride; bis(3,4-dicarboxyphenyl) methane dianhydride; bis (3,4-dicarboxyphenyl) sulfone dianhydride; benzene-1,2,3,4-tetracarboxylic dianhydride; 3,4,3′,4′-benzophenone tetracarboxylic dianhydride; 2,3,2′,3′-benzophenone tetracarboxylic dianhydride; 2,3,3′,4′-benzophenone tetracarboxylic dianhydride; pyrazine-2,3,5,6-tetracarboxylic dianhydride; thiophene-2,3,4,5-tetracarboxylic dianhydride, the corresponding acids of any of the foregoing anhydrides, and mixtures of two or more of the foregoing.
- 27. The label of claim 24, wherein the primary amine comprises methylene dianiline, meta-phenylene diamine, paraphenylene diamine, 4,4′-diaminodiphenyl sulfone, 3,3′-diaminodiphenyl sulfone, 4,4′-diaminodiphenyl oxide, 2,4-diaminotoluene, 3,3′-diaminodiphenyl methane, 1,3-diamino propane, 1,4-diamino butane, 1,6-diamino hexane, 1,8-diamino octane, 1,12-diamino dodecane and mixtures of two or more thereof.
- 28. The label of claim 1, wherein the two-part curable adhesive comprises (d) a carbodiimide and primary amine or a carboxylic acid, or a mixture of two or more thereof.
- 29. The label of claim 28, wherein the carbodiimide has the general structural formula:
- 30. The label of claim 28, wherein the primary amine comprises methylene dianiline, meta-phenylene diamine, paraphenylene diamine, 4,4′-diaminodiphenyl sulfone, 3,3′-diaminodiphenyl sulfone, 4,4′-diaminodiphenyl oxide, 2,4-diaminotoluene, 3,3′-diaminodiphenyl methane, 1,3-diamino propane, 1,4-diamino butane, 1,6-diamino hexane, 1,8-diamino octane, 1,12-diamino dodecane and mixtures of two or more thereof.
- 31. The label of claim 28, wherein the carboxylic acid is a dicarboxylic acid having the general formula:
- 32. The label of claim 1, wherein the two-part curable adhesive comprises (e) an isocyanate and a primary amine, an alcohol or a carboxylic acid, or a mixture of two or more thereof.
- 33. The label of claim 32, wherein the isocyanate is a compound having the following formula:
- 34. The label of claim 33, wherein the amine is an aliphatic, aromatic or aryl-aliphatic diamine or polyamine having a molecular weight of from about 60 to about 300.
- 35. The label of claim 33, wherein the alcohol is a saturated or unsaturated polyhydric alcohol having a molecular weight in the range from about 62 to about 400.
- 36. The label of claim 33, wherein the carboxylic acid is a dicarboxylic acid having the general formula:
- 37. A label comprising:
(A) a polymer facestock having an upper surface and a lower surface, wherein the polymer facestock is a biaxially oriented polyethylene terephthalate or polypropylene; and (B) an adhesive layer derived from at least one high solids, curable adhesive composition comprising (a) an epoxy resin and a primary amine, a carboxylic acid or a carboxylic anhydride or a mixture of two or more thereof; (b) a cyclic anhydride and a primary amine; (c) an oxazoline and a primary amine, a carboxylic acid or a carboxylic anhydride or a mixture of two or more thereof; (d) a carbodiimide and primary amine or a carboxylic acid; or (e) an isocyanate and a primary amine, an alcohol or a carboxylic acid, or a mixture of two or more thereof; or a mixture of two or more of (a)-(e).
- 38. A labeling process comprising the steps of (A) providing a substrate; (B) coating a two-part, high solids curable adhesive to one surface of a polymeric facestock; and (C) applying the adhesive coated surface of the polymeric facestock to the substrate.
- 39. The labeling process of claim 38, wherein the substrate is glass, plastic or metal.
- 40. The labeling process of claim 38, wherein the adhesive comprises (a) an epoxy resin and a primary amine, a carboxylic acid or a carboxylic anhydride or a mixture of two or more thereof; (b) a cyclic anhydride and a primary amine; (c) an oxazoline and a primary amine, a carboxylic acid or a carboxylic anhydride or a mixture of two or more thereof; (d) a carbodiimide and primary amine or a carboxylic acid; or (e) an isocyanate and a primary amine, an alcohol or a carboxylic acid, or a mixture of two or more thereof; or a mixture of two or more of (a)-(e).
- 41. The labeling process of claim 38, wherein the polymer facestock is a biaxially oriented polyethylene terephthalate or polypropylene.
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims priority from provisional application 60/397,343 filed Jul. 19, 2002. The provisional application is hereby incorporated by reference in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60397343 |
Jul 2002 |
US |