Coating compositions, including high degree of substitution (DS), viscosity optimized starches, are disclosed for use in non-barrier paper coatings. Paper coated with the same is disclosed as well as methods of making the coating compositions and coated papers.

The present invention relates to aqueous coating compositions for stretchable coatings in paper applications comprising at least one acrylic polymeric binder having a T.sub.g of 3 C. or lower, and at least one inorganic filler having a BET specific surface area in the range of 1.0 to 30.0 m.sup.2/g, wherein the dry weight ratio of the at least one acrylic polymeric binder to the at least one inorganic filler is between 15:100 and 20:100, as well as their use as stretchable coatings in paper and board applications.

The present invention relates to aqueous coating compositions for stretchable coatings in paper applications comprising at least one acrylic polymeric binder having a T.sub.g of 3 C. or lower, and at least one inorganic filler having a BET specific surface area in the range of 1.0 to 30.0 m.sup.2/g, wherein the dry weight ratio of the at least one acrylic polymeric binder to the at least one inorganic filler is between 15:100 and 20:100, as well as their use as stretchable coatings in paper and board applications.

Disclosed herein is a wallpaper, including: (a) a paper substrate including a paper layer and an ink decorative layer attached to an upper surface of the paper layer that faces away from the wall during use; (b) a fluorine-containing coating attached to a surface of the ink decorative layer; and (c) a supporting layer attached to a lower surface of the paper substrate, in which the supporting layer comprises 25 to 45 wt % of polyacrylate, 25 to 40 wt % of a styrene-acrylic acid copolymer and 10 to 50 wt % of inorganic particles based on the total weight of the supporting layer, wherein the inorganic particles are selected from the group consisting of silicon dioxide, titanium dioxide, calcium carbonate, kaolin clay, diatomite and talc powder, and a combination of two or more thereof.

Disclosed herein is a wallpaper, including: (a) a paper substrate including a paper layer and an ink decorative layer attached to an upper surface of the paper layer that faces away from the wall during use; (b) a fluorine-containing coating attached to a surface of the ink decorative layer; and (c) a supporting layer attached to a lower surface of the paper substrate, in which the supporting layer comprises 25 to 45 wt % of polyacrylate, 25 to 40 wt % of a styrene-acrylic acid copolymer and 10 to 50 wt % of inorganic particles based on the total weight of the supporting layer, wherein the inorganic particles are selected from the group consisting of silicon dioxide, titanium dioxide, calcium carbonate, kaolin clay, diatomite and talc powder, and a combination of two or more thereof.

The present invention discloses a paperboard for packaging of liquid and frozen food, comprising a dispersion coating as the only barrier layer on its outside/print side. It has surprisingly been found that a dispersion coating comprising latex and pigment applied on the outside/print side of a paperboard for liquid and/or frozen food may serve as the only barrier against moisture arising from condensation.

The present invention discloses a paperboard for packaging of liquid and frozen food, comprising a dispersion coating as the only barrier layer on its outside/print side. It has surprisingly been found that a dispersion coating comprising latex and pigment applied on the outside/print side of a paperboard for liquid and/or frozen food may serve as the only barrier against moisture arising from condensation.

The present disclosure is drawn to coating compositions that can include an inorganic pigment, a non-ionic surfactant, latex particles, a polyvinyl alcohol, and a cationic fixing agent. The inorganic pigment can be included in an amount from 60 wt % to 90 wt % by dry weight. The latex particles can include a styrene-butadiene copolymer, and can be present in an amount of 4 wt % to less than 10 wt % by dry weight. The polyvinyl alcohol can have a weight average molecular weight of 150,000 Mw to 400,000 Mw.

The invention relates to an aqueous dispersion of a polymer P, which comprises the emulsion polymerization of vinyl acetate, an acrylate monomer, which is a C.sub.1-C.sub.10 alkyl acrylate or a C.sub.1-C.sub.10 methacrylate, an ,-ethylenically unsaturated C.sub.3-C.sub.8 carboxylic acid and at least one out of glycidyl methacrylate, glycidyl acrylate, allyl methacrylate and allyl acrylate, in the presence of a starch derivative. Optionally, an additional monomer is an ethylenically unsaturated sulfonic acid, an ethylenically unsaturated other monomer or both of them. The aqueous polymer dispersion and a powder form thereof are useful for a paper coating slip containing one of the aforementioned forms. A paper or a cardboard, which is coated with the paper coating slip, shows surface strength, which is expressed by a good dry pick resistance, a good wet pick resistance or good offset test results. The aqueous polymer dispersion or the powder form thereof is furthermore useful as a binder.

The invention relates to an aqueous dispersion of a polymer P, which comprises the emulsion polymerization of vinyl acetate, an acrylate monomer, which is a C.sub.1-C.sub.10 alkyl acrylate or a C.sub.1-C.sub.10 methacrylate, an ,-ethylenically unsaturated C.sub.3-C.sub.8 carboxylic acid and at least one out of glycidyl methacrylate, glycidyl acrylate, allyl methacrylate and allyl acrylate, in the presence of a starch derivative. Optionally, an additional monomer is an ethylenically unsaturated sulfonic acid, an ethylenically unsaturated other monomer or both of them. The aqueous polymer dispersion and a powder form thereof are useful for a paper coating slip containing one of the aforementioned forms. A paper or a cardboard, which is coated with the paper coating slip, shows surface strength, which is expressed by a good dry pick resistance, a good wet pick resistance or good offset test results. The aqueous polymer dispersion or the powder form thereof is furthermore useful as a binder.