Biodegradable polymers
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United States of America Patent
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Feb 1, 2011
Grant Date -
Dec 6, 2007
app pub date -
Dec 19, 2003
filing date -
Dec 20, 2002
priority date (Note) -
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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).
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