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US 10,208,428 B2Granted
Coated paper
AssigneeEncapsys, LLC
InventorsNianxi Yan, John Charles Debraal
Life of this patent
Estimating the term…
Abstract
A coated paper with enhanced properties and/or lower cost can be obtained by using a coating that contains a binder and stanchion-encapsulated titanium dioxide. The stanchion-encapsulated titanium dioxide can provide the same or similar brightness, gloss, and/or opacity while using less titanium dioxide.
Claims22
A coated paper comprising:
- a base paper having a coating thereon,
- wherein said coating comprises a binder and a stanchion-encapsulated pigment,
- wherein the pigment comprises particles of titanium dioxide and having an average of 0.2 to 6 stanchions per particle of titanium dioxide and an average stanchion length is within the range of 10 to 500 nm,
- wherein the average stanchion lengths of the encapsulated pigment ranges from 0.01 d to 3.5 d where “d” is the encapsulated pigment diameter,
- wherein said stanchion-encapsulated pigment comprises 1-30% by weight of said coating,
- wherein the stanchion-encapsulated pigment contains a polymeric encapsulating material that comprises a polymer selected from the group consisting of:
- polyacrylate, polymethacrylate, polyalkyl(meth)acrylate and combinations thereof,
- wherein each stanchion protrudes at least two times the thickness of the encapsulating material or connects two or more particles together, and
- wherein the stanchion and polymeric encapsulating material are the same material.
6 more elements
A paper coating composition, comprising a mixture of water, a binder, and stanchion-encapsulated pigment,
- wherein said stanchion-encapsulated pigment comprises 1-30% by weight of said coating,
- wherein the stanchion-encapsulated pigment contains a polymeric encapsulating material that comprises a polymer selected from the group consisting of:
- polyacrylate, polymethacrylate, polyalkyl(meth)acrylate and combinations thereof,
- wherein each stanchion protrudes at least two times the thickness of the encapsulating material or connects two or more particles together, and
- wherein the stanchion and polymeric encapsulating material are the same material.
2 more elements
A paper comprising:
- cellulose pulp;
- and
- filler,
- wherein the filler comprises a stanchion-encapsulated pigment,
- wherein said stanchion-encapsulated pigment comprises 1-30% by weight of said coating,
- wherein the pigment comprises particles of titanium dioxide and having an average of 0.2 to 6 stanchions per particle of titanium dioxide and an average stanchion length is within the range of 10 to 500 nm, and
- wherein each stanchion protrudes at least two times the thickness of the encapsulating material or connects two or more particles together.
4 more elements
Dependencies are inferred from the claim text.