Poly[(r)-3-hydroxybutyrate] based polyester

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 71/02 (2006.01) C08G 63/88 (2006.01) C12P 7/62 (2006.01)

Patent

CA 2152677

A polyester consisting of poly[(R)-3-hydroxybutyrate] units in which ageing has occurred, characterised in that (i) the polyester is restored to its original non-aged properties by a heat treatment, and (ii) subsequent ageing of the polyester is retarded as indicated by substantial stability of at least one indicative of ageing. The invention also includes a process of to-ageing aged pdyester, and shaped polyesbr articles subjected to the do-ageing process.

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