Thickener for high-surfactant aqueous systems
US7132468B2 · kind B2 · utility
10Cited by
7References
7Claims
0Family size
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Key dates
| Filing date | Sep 18, 2003 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Dec 23, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/003
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An aqueous composition comprising at least 18% surfactant and colloidal inorganic clay. This composition is stable with regard to phase separation at 40° C. for at least three months and exhibits increased low-shear viscosity relative to a composition without clay. The composition comprises at least one lipophilically-modified copolymer containing acrylic acid residues and C2–C4 alkyl (meth)acrylate residues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.