Paper-strength agents and methods for improving pulp products
US-2015361618-A1 · Dec 17, 2015 · US
Method of increasing paper surface strength by using polyaluminum chloride in a size press formulation containing starch
US9611589B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9611589-B2 |
| Application number | US-201615151226-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 10, 2016 |
| Priority date | Aug 27, 2014 |
| Publication date | Apr 4, 2017 |
| Grant date | Apr 4, 2017 |
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Abstract
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Size press formulations and methods of treating a substrate using the size press formulations. The size press formulations may include solids. The solids may include a polyaluminum chloride compound, starch, an optical brightening agent, and a salt. Suitable polyaluminum chloride compounds include phosphated polyaluminum chloride, sulfated polyaluminum chloride, polyaluminum chloride, polyaluminum silica sulfate chloride, and any combination thereof.
First claim
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What is claimed is: 1. A dried substrate surface comprising a polyaluminum chloride compound (PAC) and starch, wherein the PAC is selected from the group consisting of phosphated polyaluminum chloride, polyaluminum silica sulfate chloride, and any combination thereof. 2. The dried substrate surface of claim 1 , wherein the substrate is paper. 3. The dried substrate surface of claim 1 , further comprising an optical brightening agent. 4. The dried substrate surface of claim 1 , further comprising a salt. 5. A method of treating a substrate surface comprising: adding a size press formulation comprising solids to the substrate surface, wherein the solids comprise a PAC and starch, and wherein the PAC is selected from the group consisting of phosphated polyaluminum chloride, polyaluminum silica sulfate chloride, and any combination thereof. 6. The method of claim 5 , wherein the solids comprise at least about 80 weight % starch and from about 5 weight % to about 20 weight % PAC. 7. The method of claim 5 , wherein the size press formulation further comprises water, a salt, and/or an optical brightening agent. 8. The method of claim 7 , wherein the solids comprise at least about 80 weight % starch, about 10 weight % to about 15 weight % salt, and about 5 weight % to about 10 weight % optical brightening agent. 9. The method of claim 5 , wherein the size press formulation has a pH from about 3 to about 8.
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- What does patent US9611589B2 cover?
- Size press formulations and methods of treating a substrate using the size press formulations. The size press formulations may include solids. The solids may include a polyaluminum chloride compound, starch, an optical brightening agent, and a salt. Suitable polyaluminum chloride compounds include phosphated polyaluminum chloride, sulfated polyaluminum chloride, polyaluminum chloride, polyalumi…
- Who is the assignee on this patent?
- Ecolab Usa Inc
- What technology area does this patent fall under?
- Primary CPC classification D21H17/28. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Apr 04 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).