Recycled or brown paper board and methods of making same
AssigneeBASF SE
InventorPeter C. Hayes
Life of this patent
Estimating the term…
Abstract
Recycled or brown paper board is provided having a surface with a coating having one or more layers, at least one coating layer comprising one or more copolymers selected from the group consisting of styrene-acrylic-based copolymers, styrene-butadiene-based copolymers, and mixtures thereof, wherein the average Tg of the copolymers present in the coating layer is 25° C. or greater and the average polymer particle size of the copolymers present in the coating layer is 130 nm or greater. A method of producing a coated recycled paper board or brown paper board and a coating composition are also provided.
Claims26
Recycled paper board or brown paper board having a surface with a coating having two or more layers, at least one layer of the coating comprising one or more copolymers selected from the group consisting of styrene-acrylic-based copolymers, styrene-butadiene-based copolymers, and mixtures thereof, wherein the average Tg of the one or more copolymers present in the coating layer is 25° C. or greater and the average polymer particle size of the one or more copolymers used in the coating layer is 130 nm or greater.
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A method of producing a coated recycled paper board or brown paper board, comprising:
- applying a coating in two or more layers to a surface of the recycled paper board or brown paper board, at least one layer of the coating comprising one or more copolymers selected from the group consisting of styrene-acrylic-based copolymers, styrene-butadiene-based copolymers, and mixtures thereof, wherein the average Tg of the one or more copolymers present in the coating layer is 25° C. or greater and the average polymer particle size of the one or more copolymers present in the coating layer is 130 nm or greater;
- and
- allowing the coating to dry onto the surface of the recycled paper board or brown paper board.
20-34. (canceled)
A coating composition for recycled paper board or brown paper board comprising one or more copolymers selected from the group consisting of styrene-acrylic-based copolymers, styrene-butadiene-based copolymers, and mixtures thereof, wherein the average Tg of the one or more copolymers present in the coating composition is 25° C. or greater and the average polymer particle size of the one or more copolymers present in the coating composition is 130 nm or greater;
- wherein the coating composition comprises a styrene-acrylic-based copolymer or a styrene-butadiene-based latex copolymer having a Tg of 25° C. or greater and a styrene-acrylic-based copolymer or a styrene-butadiene-based copolymer having a Tg less than 25° C.
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Dependencies are inferred from the claim text.