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
US9365979B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9365979-B2 |
| Application number | US-201414470686-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 27, 2014 |
| Priority date | Aug 27, 2014 |
| Publication date | Jun 14, 2016 |
| Grant date | Jun 14, 2016 |
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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 size press formulation comprising solids, the solids comprising a polyaluminum chloride compound (PAC) and starch, wherein the polyaluminum chloride compound is phosphated polyaluminum chloride. 2. The formulation of claim 1 , wherein the solids further comprise an optical brightening agent. 3. The formulation of claim 1 , wherein the solids further comprise a salt. 4. The formulation of claim 1 , further comprising water. 5. The formulation of claim 1 , wherein the formulation comprises from about 10 weight % to about 15 weight % of the solids. 6. The formulation of claim 5 , wherein the solids comprise a salt and an optical brightening agent, the solids comprise at least about 80 weight % starch, about 10 weight % to about 15 weight % salt, and about 5 weight % to about 10weight % optical brightening agent. 7. The formulation of claim 5 , wherein the solids comprise from about 5weight % to about 20 weight % PAC. 8. The formulation of claim 1 , wherein a pH of the formulation is from about 3 about 8. 9. The formulation of claim 1 , wherein the solids comprise about 10 weight % PAC. 10. A size press formulation comprising solids, the solids comprising a polyaluminuin Chloride compound and starch, wherein the polyaluminum chloride compound is polyaluminum silica sulfate chloride. 11. The formulation of claim 1 , wherein the formulation comprises at least 80% by weight of the starch.
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- What does patent US9365979B2 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 Jun 14 2016 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).