摘要：

<a target='_blank' href='http://patentscope.wipo.int/search/docservice_fpimage/WOCA2011001385@@@false;jsessionid=8594285063732367935E3AF4E7869C32.wapp1'>(EN)The disclosed technology pertains to an Oxo-Biodegradation additive (OBD), composed of several chemical compounds, which when added to plastic polymers (such as polyethylene or polypropylene), imparts to them a property whereby they fragment and bio-assimilate after a programmed in-use life cycle, when exposed to sunshine and heat in the natural environment. The final i.e. end-user product, may be certifiable under the CNEP/SEESIB Protocols for Oxo-biodegradability or equivalent International Standard with a pass-fail criterion, to qualify being designated as an OBD product. The compounds described herein used with such polyolefin polymers include Stearates of Transition metals such as Manganese, Iron and Cobalt in varying combinations along with Calcium Carbonate and/or Titanium Dioxide balanced with a phenolic anti-oxidant to ensure a service life of a specified duration. Optionally, the compositions described in the application do not require the use of any bio-based substances.

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