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Biodegradable aliphatic-aromatic polyester

  • US 8,193,301 B2
  • Filed: 03/17/2006
  • Issued: 06/05/2012
  • Est. Priority Date: 03/18/2005
  • Status: Active Grant
First Claim
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1. Biodegradable aliphatic/aromatic copolyester (AAPE) comprising:

  • A) an acid component comprising repeating units of;

    1) 49 to 63 mol % of a polyfunctional aromatic acid;

    51 to 37% of an aliphatic acid, at least 50% of which is brassylic acid,B) a diol component;

    said AAPE being disintegrated according to the Standard ISO 20200 in 90 days, and having;

    a density of less than or equal to 1.18 g/cc;

    a number average molecular weight Mn of 40,000-140,000;

    an inherent viscosity of 0.8-1.5.

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