Water-in-oil polymer emulsion containing microparticles
US7531600B1 · kind B1 · utility
24Cited by
29References
63Claims
0Family size
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Inventor
Key dates
| Filing date | Nov 12, 2004 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Feb 2, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/04
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A storage stable water-in-oil emulsion composition that includes 5% to 99% by weight of a water-in-oil emulsion polymer including a polymer or copolymer containing repeat units from an acrylamide monomer; 0.1% to 10% by weight of one or more inorganic microparticles; 0.5% to 90% by weight of a carrier solvent; and 0 to 90% by weight of a fluidizing agent. The compositions can be used to treat aqueous systems including paper processing, sludge dewatering and for fracturing fluids for subterranean formations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.