Concentrated aqueous EO/PO nonionic block copolymer solution
US5859121A · kind A · utility
4Cited by
1References
10Claims
0Family size
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Key dates
| Filing date | Jul 17, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Jul 17, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/42
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein is a stable aqueous dispersant solution containing a high concentration of an EO/PO nonionic block copolymer incapable of liquid phase continuity at ambient temperatures, and a formulation and processing approach providing an effective combination of an anionic dispersant with a water miscible solvent in an aqueous system that allows the feasible production of a dispersant solution containing a high concentration of EO/PO nonionic block copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.