Aqueous gels comprising ethoxylated polyhydric alcohols
US6342206B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Dec 27, 1999 |
| Grant date | Jan 29, 2002 |
| Priority date | — |
| Expiry date | Dec 27, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
There is provided according to the present invention an aqueous gel composition, comprisinga) an ethoxylated polyhydric alcohol which comprises a reaction product of an alcohol having 3 to 6 hydroxy groups with ethylene oxide; andb) a gelling agent selected from the group consisting of a polyoxyethylene/polyoxypropylene/polyoxyethylene triblock surfactant having a molecular weight of from 4,000 to 16,000, and wherein the weight of the polyoxyethylene blocks is from 55% to 90% of the weight of the triblock surfactant; a crosslinked polyacrylic thickener; cellulose derivatives; hydrated silicas; and mixtures thereof.When the gelling agent is the triblock surfactants, the ethoxylated polyhydric alcohol comprises the reaction product of the polyhydric alcohol and up to 5 mole equivalents of ethylene oxide per mole equivalent of hydroxyl group in the alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.