Biostable polyurethanes
US10676560B2 · kind B2 · utility
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12References
10Claims
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Assignee
Inventor
Key dates
| Filing date | May 31, 2018 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Aug 10, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/7685
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a biostable polyurethane or polyurea comprising: (a) a soft segment comprising a polysiloxane of the general formula (I); and (b) greater than 0 and less than 40 wt % of a hard segment which is a reaction product of a diisocyanate and a linear difunctional chain extender, processes for their preparation and their use in the manufacture of biomaterials, devices, articles or implants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.