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US 5,035,946 AGranted
Overprint aqueous varnish
OwnerTimothy J. Baker, John H. Woodsinventors
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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.
Claims12
A paper product bearing printing ink indicia protected by an overprint aqueous varnish having a formulation enhancing additive comprising a mixture of
- a. a finely divided unoxidized polyethylene having a molecular weight of about 700 to about 3,000;
- b. a finely divided oxidized polyethylene having a molecular weight of about 700 to about 3,000;
- and wherein components a and b comprise 1-6% of the mixture and;
- c. 2-40% 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
- wherein x is about 8 to about 75 and n is about 2 to about 65 and balance water.
3 more elements
The product of claim 7 wherein the oxidized polyethylene mixture comprises about 55-95% by weight of the polyethylene mixture.
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 to about 3,000;
- b. a finely divided oxidized polyethylene having a molecular weight of about 700 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
- 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.
6 more elements
Dependencies are inferred from the claim text.