Patterning process, resist composition, polymer, and monomer
US-9213235-B2 · Dec 15, 2015 · US
Multivalent polymers for clay aggregation
US9540469B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9540469-B2 |
| Application number | US-201514832286-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 21, 2015 |
| Priority date | Jul 26, 2010 |
| Publication date | Jan 10, 2017 |
| Grant date | Jan 10, 2017 |
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- Title
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Abstract
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The disclosure relates generally to the use of polymers to assist in aggregating mineral components in aqueous mineral slurries to release and separate individual components of the slurry, which may then be recovered from the slurry.
First claim
Opening claim text (preview).
The invention claimed is: 1. A polymer comprising a water-soluble multivalent cation-containing acrylate copolymer wherein the polymer has an intrinsic viscosity of at least 3 dl/gm and a molecular weight of at least four million, wherein the multivalent cations are selected from the group consisting of calcium, magnesium, iron, and aluminum. 2. The polymer of claim 1 wherein the polymer is substantially free of monovalent cations. 3. The polymer of claim 1 wherein only a single species of multivalent cation is present in the polymer. 4. The polymer of claim 1 wherein the polymer is a calcium- or magnesium-containing diacrylate copolymer with acrylamide. 5. The polymer of claim 1 wherein the polymer is a diacrylate/acrylamide copolymer. 6. The polymer of claim 5 wherein the polymer is a diacrylate/acrylamide/2-acrylamido-2-methylpropane sulfonic acid (AMPS) terpolymer. 7. The polymer of claim 1 wherein the polymer is branched. 8. The polymer of claim 1 wherein the polymer is prepared by solution polymerization or emulsion polymerization. 9. A polymer comprising a water-soluble multivalent cation-containing acrylate/acrylamide copolymer wherein the polymer has an intrinsic viscosity of at least 3 dl/gm and a molecular weight of at least four million. 10. The polymer of claim 9 wherein the polymer is substantially free of monovalent cations. 11. The polymer of claim 9 wherein the multivalent cations are selected from the group consisting of calcium, magnesium, iron, and aluminum. 12. The polymer of claim 9 wherein only a single species of multivalent cation is present in the polymer. 13. The polymer of claim 9 wherein the polymer is branched. 14. The polymer of claim 9 wherein the polymer is prepared by solution polymerization or emulsion polymerization. 15. A polymer comprising a water-soluble multivalent cation-containing diacrylate/acrylamide copolymer wherein the polymer has an intrinsic viscosity of at least 3 dl/gm and a molecular weight of at least four million. 16. The polymer of claim 15 wherein the polymer is substantially free of monovalent cations. 17. The polymer of claim 15 wherein only a single species of multivalent cation is present in the polymer. 18. The polymer of claim 15 wherein the multivalent cation is calcium or magnesium. 19. The polymer of claim 15 wherein the polymer is a diacrylate/acrylamide/2-acrylamido-2-methylpropane sulfonic acid (AMPS) terpolymer. 20. The polymer of claim 15 wherein the polymer is branched. 21. The polymer of claim 15 wherein the polymer is prepared by solution polymerization or emulsion polymerization.
Assignees
Inventors
Classifications
using natural chemical compounds · CPC title
Inorganic compounds · CPC title
Macromolecular compounds · CPC title
- C08F220/26Primary
Esters containing oxygen in addition to the carboxy oxygen · CPC title
Hot water or cold water extraction processes · CPC title
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Frequently asked questions
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- What does patent US9540469B2 cover?
- The disclosure relates generally to the use of polymers to assist in aggregating mineral components in aqueous mineral slurries to release and separate individual components of the slurry, which may then be recovered from the slurry.
- Who is the assignee on this patent?
- Sortwell & Co, Basf Se
- What technology area does this patent fall under?
- Primary CPC classification C08F220/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 10 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).