Polysiloxane-containing polyurethane elastomeric compositions
US6627724B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Dec 13, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a material having improved mechanical properties, clarity, processability and/or degradation resistance comprising a polyurethane elastomeric composition which includes a soft segment derived from at least one polysiloxane macrodiol and at least one polyether and/or polycarbonate macrodiol. This material can function as a degradation-resistant material or biomaterial and is particularly useful in the manufacture of medical devices, articles or implants which contact living tissue or bodily fluids. The present invention also provides a polyurethane elastomeric composition which includes a soft segment derived from at least one polysiloxane and at least one polyether and/or polycarbonate macrodiol and processes for its preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.