Biodegradable polymers
US7879964B2 · kind B2 · utility
0Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2003 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Jul 6, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F30/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A phosphorus-containing polymer is provided comprising the reaction product of a chain-transfer agent having at least one pH bond with an unsaturated carboxylic, phosphonic or sulphonic acid. The invention also provides the aforementioned phosphorus-containing polymer further comprising phosphorus-containing end-caps. The polymers have a biodegradability of at least 20% per 28 days (as determined by OECD 306).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.