Substrate coating compositions and their use

A substrate coating composition comprising:

• (a) a pigment system comprising about 60 wt. % to about 95 wt. % of total solids of the coating composition;
• (b) a binder comprising about 4 wt. % to about 35 wt. % of total solids of the coating composition;
• (c) a thickener system comprising about 0.5 wt. % to about 5 wt. % of total solids of the coating composition comprising:
• (i) a polyvinyl alcohol polymer having a degree of polymerization of about 300 to about 4,000, a molecular weight of about 10,000 to about 200,000, and being about 88.0 mole % to about 99.9 mole % hydrolyzed, comprising about 94 wt. % to about 99.98 wt. % of total solids of the thickener system;
• and
• (ii) a boron containing compound comprising about 0.02 wt. % to about 6 wt. % of total solids of the thickener system, wherein the coating composition comprises from about 40 wt. % to about 67 wt. % total solids.

A coated substrate comprising:

• (1) a substrate;
• and
• (2) a coating comprising:
• (a) a pigment system comprising about 60 wt. % to about 95 wt. % of total solids of the coating composition;
• (b) a binder comprising about 4 wt. % to about 35 wt. % of total solids of the coating composition;
• (c) a thickener system comprising about 0.5 wt. % to about 5 wt. % of total solids of the coating composition comprising:
• (i) a polyvinyl alcohol polymer having a degree of polymerization of about 300 to about 4,000, a molecular weight of about 10,000 to about 200,000, and being about 88.0 mole % to about 99.9 mole % hydrolyzed, comprising about 94 wt. % to about 99.98 wt. % of total solids of the thickener system;
• and
• (ii) a boron containing compound comprising about 0.02 wt. % to about 6 wt. % of total solids of the thickener system,
• wherein the coating composition comprises from about 40 wt. % to about 67 wt. % total solids.

A process of coating a substrate comprising:

• (1) coating the substrate with a coating composition comprising:
• (a) a pigment system comprising about 60 wt. % to about 95 wt. % of total solids of the coating composition;
• (b) a binder comprising about 4 wt. % to about 35 wt. % of total solids of the coating composition;
• (c) a thickener system comprising about 0.5 wt. % to about 5 wt. % of total solids of the coating composition comprising:
• (i) a polyvinyl alcohol polymer having a degree of polymerization of about 300 to about 4,000, a molecular weight of about 10,000 to about 200,000, and being about 88.0 mole % to about 99.9 mole % hydrolyzed, comprising about 94 wt. % to about 99.98 wt. % of total solids of the thickener system;
• and
• (ii) a boron containing compound comprising about 0.02 wt. % to about 6 wt. % of total solids of the thickener system,
• wherein the coating composition comprises from about 40 wt. % to about 67 wt. % total solids;
• and
• drying the coating composition.

A printed substrate product comprised of a coated substrate comprising:

• (a) a pigment system comprising about 60 wt. % to about 95 wt. % of total solids of the coating composition;
• (b) a binder comprising about 4 wt. % to about 35 wt. % of total solids of the coating composition;
• (c) a thickener system comprising about 0.5 wt. % to about 5 wt. % of total solids of the coating composition comprising:
• (i) a polyvinyl alcohol polymer having a degree of polymerization of about 300 to about 4,000, a molecular weight of about 10,000 to about 200,000, and being about 88.0 mole % to about 99.9 mole % hydrolyzed, comprising about 94 wt. % to about 99.98 wt. % of total solids of the thickener system;
• and
• (ii) boric acid comprising about 0.02 wt. % to about 6 wt. % of total solids of the thickener system.