# US 2018/0022932 A1 · Enhanced performance of mineral based aqueous barrier coatings > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0022932 A1 - Document ID: US20180022932A1 - Status: Published application - Kind: A1 - Application number: 15/722,656 - Filed: 2017-10-02 - Published: 2018-01-25 - Earliest claimed: 2009-08-24 - Assignees: BASF SE - Applicants: BASF Corporation - Inventors: Rajan R. Iyer; Richard Berube; Michael B. Sigman; Sharad Mathur; Kenneth W. Folmar; John D. Serafano; Ashok Khokhani; Jennifer Rigney; James Royce Godfrey - Web page: https://patentgrep.com/patent/US20180022932A1 ## CPC - C09D 5/028: {Pigments; Filters} - C08L 9/08: Latex - C09D 7/62: modified by treatment with other compounds - C08K 3/34: Silicon-containing compounds - C08K 3/346: {Clay} - C08K 9/04: Ingredients treated with organic substances {(treated with macromolecular compounds C08K9/08)} - C08K 9/06: with silicon-containing compounds - C08L 25/12: with unsaturated nitriles - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract A method for preparing an aqueous based coating system, and coating systems made thereby, for coating onto paper and/or paperboard for providing barrier to liquid, moisture vapor, oil and grease including a pigment and a polymer emulsion system or natural based binding system. One alternative of the method includes surface treating a pigment to form a pigment system and mixing a polymer emulsion system or natural based binding system with the pigment system. Another alternative of the method includes mixing a pigment and polymer emulsion system or natural based binding system and hydrophobizing the polymer emulsion system or natural based binding system by adding silanes, siloxanes, siloxane/silicone resin blends, or their carbon based analogs. ## Claims ### Claim 1 A method for preparing an aqueous based coating system for coating onto paper and/or paperboard for providing barrier to liquid, moisture vapor, oil and grease, comprising: surface treating a pigment to form a pigment system; and mixing a polymer emulsion system or natural based binding system with the pigment system. ### Claim 2 (depends on 1) The method of claim 1 wherein a component of the pigment system has been modified by a thermal treatment process. ### Claim 3 (depends on 1) The method of claim 1, wherein the pigment is surface treated with materials selected from the group consisting of surfactants, hydrophobically-modified polymers, styrene-acrylic resin emulsion, styrene-butadiene latex emulsions, blends of styrene acrylic and styrene butadiene latex emulsions, and silanes, siloxanes, siloxane/silicone resin blends, and their carbon-based analogs. ### Claim 4 (depends on 1) The method of claim 1, wherein the pigment is at least one inorganic material selected from kaolin, bentonite, mica, talc, attapulgite, and zeolite. ### Claim 5 (depends on 1) The method of claim 1, wherein the polymer emulsion system comprises a styrene-acrylic resin emulsion. ### Claim 6 (depends on 1) The method of claim 1 further comprising mixing an additive to improve blocking with the polymer emulsion system or natural based binding system and pigment system. ### Claim 7 (depends on 6) The method of claim 6, wherein the additive to improve blocking comprises a material selected from the group consisting of calcium stearate, styrene-acrylic resin, acrylic resin, and polyethylene-paraffin wax emulsion. ### Claim 8 An aqueous based coating system for coating onto paper and/or paperboard for providing barrier to liquid, moisture vapor, oil and grease, comprising a polymer emulsion system or natural-based binding system and a pigment system, wherein the pigment system comprises a surface treated pigment. ### Claim 9 (depends on 8) The aqueous based coating system of claim 8, wherein a component of the pigment system has been modified by a thermal treatment process. ### Claim 10 (depends on 8) The aqueous based coating system of claim 8, wherein the pigment has been surface treated with materials selected from the group consisting of surfactants, hydrophobically-modified polymers, styrene-acrylic resin emulsion, styrene-butadiene latex emulsions, blends of styrene acrylic and styrene butadiene latex emulsions, and silanes, siloxanes, siloxane/silicone resin blends, and their carbon-based analogs. ### Claim 11 (depends on 8) The aqueous based coating system of claim 8, wherein the pigment comprises at least one inorganic material selected from kaolin, bentonite, mica, talc, attapulgite, and zeolite. ### Claim 12 (depends on 8) The aqueous based coating system of claim 8, wherein the polymer emulsion system comprises a styrene-acrylic resin emulsion. ### Claim 13 (depends on 8) The aqueous based coating system of claim 8 further comprising an additive to improve blocking. ### Claim 14 (depends on 13) The aqueous based coating system of claim 13, wherein the additive to improve blocking comprises a material selected from the group consisting of calcium stearate, styrene-acrylic resin, acrylic resin, and polyethylene-paraffin wax emulsion. ### Claim 15 A coating system for coating onto a paper and/or paperboard comprising a pigment and a polymer emulsion or natural-based binding system that has been hydrophobized by the addition of materials selected from the group consisting of silanes, siloxanes, siloxane/silicone resin blends, and their carbon-based analogs. ### Claim 16 (depends on 15) The coating system of claim 15, wherein the pigment has been modified by a thermal treatment process. ### Claim 17 (depends on 15) The aqueous based coating system of claim 15, wherein the pigment comprises at least one inorganic material selected from kaolin, bentonite, mica, talc, attapulgite, and zeolite. ### Claim 18 (depends on 15) The coating system of claim 15, wherein the pigment has been surface treated to form a pigment system. ### Claim 19 (depends on 18) The coating system of claim 18, wherein the pigment system comprises surface treated kaolin having a particle size of at least 20% by weight finer than 2 micrometers. ### Claim 20 (depends on 18) The coating system of claim 18, wherein the pigment has been surface treated with the group selected from surfactants, hydrophobically modified polymers, styrene-acrylic resin emulsion, styrene-butadiene latex emulsions, blends of styrene acrylic and styrene butadiene latex emulsions, and silanes, siloxanes, siloxane/silicone resin blends, and their carbon-based analogs. ### Claim 21 (depends on 15) The coating system of claim 15, wherein the polymer emulsion system comprises a styrene-acrylic resin emulsion. ### Claim 22 (depends on 15) The coating system of claim 15 further comprising an additive to improve blocking. ### Claim 23 (depends on 22) The coating system of claim 22, wherein the additive to improve blocking comprises a material selected from the group consisting of calcium stearate, styrene-acrylic resin, acrylic resin, and polyethylene-paraffin wax emulsion. ### Claim 24 A method for preparing an aqueous based coating system for coating onto paper and/or paperboard for providing a barrier to liquid, moisture vapor, oil and grease, comprising: mixing a polymer emulsion system or natural based binding system with a pigment; and hydrophobizing the polymer emulsion system or natural based binding system by adding a material selected from the group consisting of silanes, siloxanes, siloxane/silicone resin blends, and their carbon-based analogs. ### Claim 25 (depends on 24) The method of claim 24, wherein a component of the pigment system has been modified by a thermal treatment process. ### Claim 26 (depends on 24) The method of claim 24, wherein the pigment is surface treated with materials selected from the group consisting of surfactants, hydrophobically-modified polymers, styrene-acrylic resin emulsion, styrene-butadiene latex emulsions, blends of styrene acrylic and styrene butadiene latex emulsions, and silanes, siloxanes, siloxane/silicone resin blends, and their carbon-based analogs. ### Claim 27 (depends on 24) The method of claim 24, wherein the pigment is at least one inorganic material selected from kaolin, bentonite, mica, talc, attapulgite, and zeolite. ### Claim 28 (depends on 24) The method of claim 24, wherein the polymer emulsion system comprises a styrene-acrylic resin emulsion. ### Claim 29 (depends on 24) The method of claim 24 further comprising mixing an additive to improve blocking with the polymer emulsion system or natural based binding system and pigment. ### Claim 30 (depends on 29) The method of claim 29, wherein the additive to improve blocking comprises a material selected from the group consisting of calcium stearate, styrene-acrylic resin, acrylic resin, and polyethylene-paraffin wax emulsion.