Compositions comprising starch and/or modified starch and plasticizers
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United States of America Patent
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May 18, 2004
Grant Date -
Oct 16, 2003
app pub date -
Mar 28, 2003
filing date -
Jul 9, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Compositions are described, based on starch and/or on modified starch and comprising, as plasticizers, polyhydroxycarboxylic acids derived from aldoses and/or from ketoses, in particular from pentoses and hexoses, or comprising lactones of these acids. The materials can be processed thermoplastically to give shaped articles which are biodegradable and physiologically nonhazardous. They may be used as packaging or casing for food or drink or pharmaceutical products, or also for the controlled release of active substances, or else for producing temporary protective coatings.
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