Method for forming hydrogels and materials therefor
US11759553B2 · kind B2 · utility
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16References
14Claims
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Key dates
| Filing date | Sep 27, 2021 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Mar 15, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2430/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides a dry powder that is suitable for use in forming a hydrogel and characterized by a stable composition at ambient conditions. The dry powder includes a prepolymer including a straight chain polyethylene glycol, and a thermally activated free radical initiator selected from the group consisting of sodium persulfate, potassium persulfate, and ammonium persulfate. The present invention also provides a method of forming the dry powder, and a method of preparing a hydrogel where a reaction mixture is formed including the dry powder and a buffered aqueous solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.