Polymeric thickeners for oil-containing compositions
US7101928B1 · kind B1 · utility
3Cited by
39References
53Claims
0Family size
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Inventor
Key dates
| Filing date | Sep 17, 1999 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Sep 17, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/54
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Novel thickeners for oil-containing compositions are crystalline polymers, preferably side chain crystalline polymers, which (a) have a crystalline melting point, Tp, and an onset of melting temperature, To, such that Tp−To is less than Tp0.7; (b) are soluble in the oil at temperatures above Tp, and (c) have been dispersed in the oil by a process which comprises (i)dissolving the polymer in the oil at a temperature above Tp, and (ii) cooling the solution from step (i) to crystallize the polymer in the oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.