US 5,763,100 A · Recyclable acrylic coated paper stocks and related methods of manufacture

Abstract

Recyclable paper stock comprising a substrate coated on at least one surface with a water based emulsion coating. The water based emulsion coating comprises 20-90 dry wt. % of an acrylic-styrene copolymer and 5-70 dry wt. % of a wax. In another embodiment a second water based emulsion coating comprised of an acrylic-styrene copolymer is coated on the substrate surface opposite the initial water based emulsion coating. The substrate may also be coated with a primer coat prior to the application of the water based emulsion coatings to seal the substrate surface. The invention also includes processes for making and using the invented acrylic coated paper stocks.

Claims15

Dependent claims

A recyclable paper stock comprising:

a substrate coated on at least one surface with a water based emulsion coating;
said coating consisting essentially of:
20-90 dry wt. % of an acrylic-styrene copolymer which consists essentially of acrylic monomers and styrene having a glass transition temperature below 50.degree. C.;
5-70 dry wt. % of a wax component selected from the group consisting of paraffin wax, microcrystalline wax, polyethylene wax and a blend of two or more of said waxes;
and
an acrylic polymer having a glass transition temperature above 30.degree. C. present in an amount up to 60 dry wt. % in order to provide good blocking characteristics;
wherein said coating forms a water resistant film on said substrate surface.

4 more elements

Dependencies are inferred from the claim text.

Recyclable acrylic coated paper stocks and related methods of manufacture

Life of this patent

Recyclable acrylic coated paper stocks and related methods of manufacture

Life of this patent

Abstract

Claims15