BIODEGRADABLE RESIN AND METHOD FOR MANUFACTURING SAME
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United States of America Patent
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Issued Date -
Aug 8, 2013
app pub date -
Apr 29, 2011
filing date -
Jan 31, 2011
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Abandoned
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Abstract
Provided is a biodegradable resin including a urethane bond generated by a reaction of a polyester polymer with a polyvalent isocyanate used as a chain extender. Particularly, provided is a method of preparing a biodegradable resin using a limited amount of the chain extender and having excellent properties, and a biodegradable resin in which nitrogen content is controlled. Therefore, the biodegradable resin which can reduce the use of a harmful component to the human body and environment in the process of preparing the biodegradable resin and can be safely used for packing materials for food or medicine is provided.
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