Overprint aqueous varnish

Abstract

An overprint aqueous varnish has improved properties by having incorporated therein a small amount of an aqueous mixture of a finely divided hydrocarbon and certain high molecular weight oxyalkylated primary alcohols.

What is claimed is: 
     
       1. .[.A product bearing print ink indicia protected by an.]. .Iadd.An .Iaddend.overprint aqueous varnish having formulation enhancing additive comprising a mixture of a. A finely divided mostly linear aliphatic hydrocarbon .[.and/or.]. .Iadd.or a .Iaddend.modified hydrocarbon .Iadd.or mixtures thereof .Iaddend.having a molecular weight of about 300-3,000 .Iadd.selected from the group consisting of (i) a copolymer of ethylene and either propylene, butylene, vinyl acetate or acrylic acid; (ii) petroleum-derived waxes; (iii) Fischer-Tropsch waxes; (iv) natural wax; and (v) partially oxidized hydrocarbon.Iaddend.; and   b. a compound represented by the formula: ##STR3## wherein R and R 1  are independently hydrogen or C 1  -C 10  alkyls; R 2  is hydrogen or methyl, x is about 8 to about 75; and n is about 2 to about 65.   
     
     
       2. The .[.product.]. .Iadd.varnish .Iaddend.of claim 1 wherein x is about 19 to about 44. 
     
     
       3. The .[.product.]. .Iadd.varnish .Iaddend.of claim 1 wherein n is about 4 to about 50. 
     
     
       4. The .[.product.]. .Iadd.varnish .Iaddend.of claim 2 where n is about 4 to about 50. 
     
     
       5. The .[.product.]. .Iadd.varnish .Iaddend.of claim 1 wherein the hydrocarbon is .[.a mixture of unoxidized polyethylene and.]. oxidized polyethylene. 
     
     
       6. The .[.product.]. .Iadd.varnish .Iaddend.of claim .[.5.]. .Iadd.19 .Iaddend.wherein the oxidized polyethylene .[.mixture.]. comprises about 55-95% by weight of the .[.polyethylene mixture.]. .Iadd.hydrocarbon.Iaddend.. 
     
     
       7. A method of coating a product comprising the steps of forming an aqueous mixture of a. a finely divided mostly linear aliphatic hydrocarbon .[.and/or.]. .Iadd.or a .Iaddend.modified hydrocarbon .Iadd.or mixtures thereof .Iaddend.having a molecular weight of about 300-3,000 .Iadd.selected from the group consisting of (i) a copolymer of ethylene and either propylene, butylene, vinyl acetate or acrylic acid; (ii) petroleum-derived waxes; (iii) Fischer-Tropsch waxes; (iv) natural wax; and (v) partially oxidized hydrocarbon.Iaddend.; and   b. a compound represented by the formula: ##STR4## wherein R and R 1  are independently hydrogen or C 1  -C 10  alkyls; R 2  is hydrogen or methyl, x is about 8 to about 75; and n is about 2 to about 65; adding the thus-formed aqueous mixture to an overprint aqueous varnish; mixing the aqueous mixture and varnish; and applying the resulting mixture to a product bearing printing ink indicia.   
     
     
       8. The method of claim 7 wherein x is about 19 to about 44. 
     
     
       9. The method of claim 7 wherein n is about 4 to about 50. 
     
     
       10. The method of claim 8 wherein n is about 4 to about 50. 
     
     
       11. The method of claim 7 wherein the hydrocarbon is .[.a mixture of unoxidized polyethylene and.]. oxidized polyethylene. 
     
     
       12. The method of claim 8 wherein the .[.oxidized polyethylene mixture.]. .Iadd.hydrocarbon further .Iaddend.comprises .[.about 55-95% by weight of the polyethylene mixture.]. .Iadd.unoxidized polyethylene.Iaddend.. 
     
     
       13. An aqueous varnish having incorporated therein a formulation enhancing additive comprising a mixture of a. a finely divided mostly linear aliphatic hydrocarbon .[.and/or.]. .Iadd.or a .Iaddend.modified hydrocarbon .Iadd.or mixtures thereof .Iaddend.having a molecular weight of about 300-3,000 .Iadd.selected from the group consisting of (i) a copolymer of ethylene and either propylene, butylene, vinyl acetate or acrylic acid; (ii) petroleum-derived waxes; (iii) Fischer-Tropsch waxes; (iv) natural wax; and (v) partially oxidized hydrocarbon.Iaddend.; and   b. a compound represented by the formula: ##STR5## wherein R and R 1  are independently hydrogen or C 1  -C 10  alkyls; R 2  is hydrogen or methyl, x is about 8 to about 75; and n is about 2 to about 65.   
     
     
       14. The varnish of claim 13 wherein x is about 19 to about 44. 
     
     
       15. The varnish of claim 13 wherein n is about 4 to about 50. 
     
     
       16. The varnish of claim 14 wherein n is about 4 to about 50. 
     
     
       17. The varnish of claim 13 wherein the hydrocarbon is .[.a mixture of unoxidized polyethylene and.]. oxidized polyethylene. 
     
     
       18. The varnish of claim .[.17.]. .Iadd.20 .Iaddend.wherein the oxidized polyethylene mixture comprises about 55-95% by weight of the polyethylene mixture. .Iadd.19. The varnish of claim 5 wherein the hydrocarbon further contains unoxidized polyethylene. .Iaddend. .Iadd.20. The varnish of claim 17 wherein the hydrocarbon further contains unoxidized polyethylene. .Iaddend.