BIODEGRADABLE POLYMER BLEND
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United States of America Patent
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Issued Date -
Aug 12, 2021
app pub date -
Apr 28, 2021
filing date -
Mar 9, 2012
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Abstract
A fully degradable and a compostable polyester based blend that is free from non-degradable organic or inorganic additives. The thermal properties of the present blend are configured for optimised flow rate during process moulding via a ‘flow rate enhancing component’ being a relative low molecular weight biodegradable polyester. The blend also provides a resultant moulded article having the appropriate mechanical, physical and chemical properties including greatly improved toughness and impact strength relative to existing PLA based blends. This is achieved by incorporating a ‘toughening component’ within the blend being a relatively high molecular weight component relative to the flow rate enhancing component and a polyester nucleating agent.
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