초록 ▼

A radiation curable coating composition comprising: (i) a thermoplastic polymer; (ii) at least one ethylenically unsaturated adhesion-promoting monomer or oligomer; (iii) at least one other ethylenically unsaturated radiation polymerizable reactant; and (iv) at least one initiator for initiating

A radiation curable coating composition comprising: (i) a thermoplastic polymer; (ii) at least one ethylenically unsaturated adhesion-promoting monomer or oligomer; (iii) at least one other ethylenically unsaturated radiation polymerizable reactant; and (iv) at least one initiator for initiating cure.

대표청구항 ▼

The invention claimed is: 1. A radiation curable coating composition comprising: a. a thermoplastic polymer having pendant amine functionality; b. at least one ethylenically unsaturated adhesion-promoting monomer or oligomers; c. at least one other ethylenically unsaturated radiation polymerizable

The invention claimed is: 1. A radiation curable coating composition comprising: a. a thermoplastic polymer having pendant amine functionality; b. at least one ethylenically unsaturated adhesion-promoting monomer or oligomers; c. at least one other ethylenically unsaturated radiation polymerizable reactant; and d. at least one initiator for initiating cure upon exposure to radiation. 2. The curable coating composition of claim 1 wherein the thermoplastic polymer has a number average molecular weight less than 35,000. 3. The curable coating composition of claim 1, wherein the thermoplastic polymer has a number average molecular weight of less than 10,000. 4. The curable composition of claim 1 wherein the adhesion-promoting monomer is present at a level of at least 1% by weight of the combined weight of thermoplastic polymer, adhesion promoting monomer and other radiation polymerizable reactant. 5. The coating composition of claim 1 wherein the thermoplastic polymer is present at a level of at least 5% by weight of the combined weight of thermoplastic polymer, adhesion-promoting monomer or oligomer and other radiation polymerizable reactant. 6. The coating composition of claim 1 wherein the polymerizable reactant is present at a level of at least 40% by weight of thermoplastic polymer, adhesion-promoting monomer or oligomer and other radiation polymerizable reactant. 7. The coating composition of claim 1 wherein the adhesion-promoting monomer or oligomer has acid functionality. 8. The coating composition of claim 1 wherein the composition also incorporates a pigment. 9. The coating composition of claim 1 wherein the thermoplastic polymer has a Tg greater than 30° C. 10. The coating composition of claim 1 wherein the thermoplastic polymer is substantially free of polymerizable ethylenic unsaturation. 11. The coating composition of claim 1 wherein said composition is non-aqueous. 12. The coating composition of claim 1 wherein the composition comprises: a. 5-40% by weight of thermoplastic polymer, adhesion-promoting monomer or oligomer and other radiation polymerizable reactant of a thermoplastic polymer; b. 1-20% by weight of thermoplastic polymer, adhesion-promoting monomer or oligomer and other radiation polymerizable reactant of at least one ethylenically unsaturated adhesion-promoting monomer or oligomer; (iii) 40-94% by weight of thermoplastic polymer, adhesion-promoting monomer or oligomer and other radiation polymerizable reactant of at least one ethylenically unsaturated radiation polymerizable reactant. 13. A method of coating a substrate comprising: (a) providing an appropriate substrate; (b) depositing onto at least one surface of the substrate a coating composition comprising: (i) a thermoplastic polymer having pendant amine functionality; (ii) at least one ethylenically unsaturated adhesion-promoting monomer or oligomers; (iii) at least one other ethylenically unsaturated radiation polymerizable reactant; and (iv) at least one initiator for initiating cure upon exposure to radiation; and (c) exposing the applied coating to a curing amount of high energy radiation to produce a cured adherent coating. 14. The method of claim 13 wherein the substrate is a porous substrate. 15. The method of claim 14 wherein the porous substrate is wood. 16. The method of claim 13 wherein the method also comprises the additional steps of: (d) depositing onto the surface of the cured coating a topcoat; and (e) allowing the topcoat to cure or dry. 17. The method of claim 13 wherein the coating is deposited by a vacuum coating process. 18. The method of claim 13 wherein the high energy is ultraviolet light. 19. The method of claim 13 wherein the high energy is an electron beam. 20. The method of claim 16 wherein the topcoat is a polyurethane topcoat. 21. A substrate coated with a multi-layer decorative and/or protective coating which comprises a primer coat layer and a topcoat layer and wherein the primer coat layer comprises the reaction product obtained by the radiation cure of a liquid coating composition comprising: (i) a thermoplastic polymer having pendant amine functionality; (ii) at least one ethylenically unsaturated adhesion-promoting monomer or oligomers; (iii) at least one other ethylenically unsaturated radiation polymerizable reactant; and (iv) at least one initiator for initiating cure. 22. The substrate of claim 21 wherein the topcoat layer comprises a polyurethane.