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 .[.paper product bearing printing ink indicia protected by an overprint aqueous varnish having a.]. formulation .[.enhancing additive.]. .Iadd.capable of imparting improved slip properties when added to either a water-based ink or a paper protecting varnish composition, said formulation .Iaddend.comprising a mixture of a. a finely divided unoxidized polyethylene having a molecular weight of about .[.700.]. .Iadd.300 .Iaddend.to about 3,000;   b. a finely divided oxidized polyethylene having a molecular weight of about .[.700.]. .Iadd.300 .Iaddend.to about 3,000; and wherein components a and b comprise 1-6% of the .[.mixture and;.]. .Iadd.mixture; and .Iaddend.   c. 2-40% .Iadd.of .Iaddend.an oxyalkylated essentially linear alcohol represented by the formula   .[.CH.sub.3 (CH.sub.2).sub.x O--(CH.sub.2 CH.sub.2 O).sub.n H.].       .Iadd.CH.sub.3 (CH.sub.2 CH.sub.2).sub.x CH.sub.2 O--(CH.sub.2 CH.sub.2 O).sub.n H.Iaddend.     wherein x is about 8 to about 75 and n is about 2 to about 65 and balance water.     
     
     
       2. The .[.product.]. .Iadd.formulation .Iaddend.of claim 1 wherein x is about 19 to about 44. 
     
     
       3. The .[.product.]. .Iadd.formulation .Iaddend.of claim 1 wherein n is about 4 to about 50. 
     
     
       4. The .[.product.]. .Iadd.formulation .Iaddend.of claim 2 wherein n is about 4 to about 50. .[.5. The product of claim 1 wherein the hydrocarbon 
     
     
        is a mixture of unoxidized polyethylene and oxidized polyethylene..]. 6. The .[.product.]. .Iadd.formulation .Iaddend.of claim .[.7.]. .Iadd.1 .Iaddend.wherein the oxidized polyethylene mixture comprises about 55-95% 
     
     
        by weight of the polyethylene mixture. 7. A method of coating a paper product comprising the steps of forming an aqueous mixture of a. a finely divided unoxidized polyethylene having a molecular weight of about .[.700.]. .Iadd.300 .Iaddend.to about 3,000;   b. a finely divided oxidized polyethylene having a molecular weight of about .[.700.]. .Iadd.300 .Iaddend.to about 3,000; and wherein components a and b comprise 1-60% of the mixture and,   c. 2-40% of an oxyalkylated essentially linear alcohol represented by the formula   .[.CH.sub.3 (CH.sub.2).sub.x O--(CH.sub.2 CH.sub.2 O).sub.n H.].       .Iadd.CH.sub.3 (CH.sub.2 CH.sub.2).sub.x CH.sub.2 O--(CH.sub.2 CH.sub.2 O).sub.n H .Iaddend.     wherein x is about 8 to about 70 and n is about 2 to about 65 and balance water; adding the thus-formed aqueous mixture to an overprint aqueous varnish; mixing the aqueous mixture and varnish; and applying the     
     
     
        resulting mixture to a paper product bearing printing ink indicia. 8. The .[.product.]. .Iadd.method .Iaddend.of claim 7 wherein x is about 19 to 
     
     
        about 44. 9. The .[.product.]. .Iadd.method .Iaddend.of claim 7 wherein n 
     
     
        is about 4 to about 50. 10. The .[.product.]. .Iadd.method .Iaddend.of claim 8 wherein n is about 4 to about 50. .[.11. The product of claim 7 wherein the hydrocarbon is a mixture of unoxidized polyethylene and 
     
     
        oxidized polyethylene..]. 12. The .[.product.]. .Iadd.method .Iaddend.of claim 7 wherein the oxidized polyethylene mixture comprises about 55-95% by weight of the polyethylene mixture. .Iadd.13. An aqueous varnish comprising the formulation of claim 1. .Iaddend. .Iadd.14. An aqueous 
     
     
        varnish comprising the formulation of claim 6. .Iaddend. .Iadd.15.  The formulation of claim 6 wherein the oxyalkylated essentially linear alcohol is of the formula   CH.sub.3 (CH.sub.2 CH.sub.2).sub.x CH.sub.2 O--(CH.sub.2 CH.sub.2 O).sub.n H     wherein x is between from about 19 to about 44. .Iaddend. .Iadd.16. An aqueous varnish comprising the formulation of claim 15. .Iaddend.