Process of preparing a crosslinked gel
US9393189B2 · kind B2 · utility
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16Claims
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Assignee
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Key dates
| Filing date | Dec 6, 2011 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | May 7, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2305/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The subject of the present invention is a process of preparing a crosslinked gel of at least one polysaccharide or one of its salts, including at least the steps consisting in: a) providing, at a temperature below 35° C., an aqueous gel including at least one polysaccharide in an uncrosslinked form together with at least one difunctional or multifunctional epoxy crosslinking agent; b) maintaining the mixture of step a) at a temperature below 35° C. for at least one hour; c) stimulating the crosslinking reaction of the mixture obtained after step b), and if need be; d) recovering said crosslinked gel formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.