Method for testing the degradation of polymeric materials
US6670190B2 · kind B2 · utility
2Cited by
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20Claims
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Key dates
| Filing date | Apr 7, 2003 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Apr 7, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a novel method for monitoring the surface concentration of a drug in a polymer blend matrix and the reaction kinetics of the biodegradable polymers. Detailed information on surface concentration, degradation rates, degradation kinetics and mechanism, is provided by using Time-of-Flight Secondary Ion Mass Spectrometry (ToF SIMS) measurements. Also provided is a method for determining oligomers in hydrolyzed biodegradable polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.