Biodegradable aliphatic-aromatic copolyester
First Claim
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1. Polymeric composition comprisingA) a biodegradable aliphatic/aromatic copolyester (AAPE) comprising:
- a) an acid component comprising repeating units of;
53 to 64 mol %, of a polyfunctional aromatic carboxylic acid;
47 to 36%, of an aliphatic acid at least 50% of which is azelaic acid;
b) a diol component selected from the group consisting of C3, C4 and C6 diols;
said AAPE being disintegrated according to the Standard ISO 20200 in 90 days and having;
a density of less than a 1.22 g/cc;
a number average molecular weight Mn of 40,000-140,000;
an inherent viscosity of 0.8-1.5;
a Elastic Modulus higher than 100 Pa; and
a polydispersity index determined by means of GPC of between 1.8 and 25;
B) at least one other polymer selected from other polyesters of the aliphatic/aromatic type or biodegradable polymers of natural origin or of synthetic origin.
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Abstract
Biodegradable aliphatic/aromatic copolyester comprising: A) an acid component comprising repeating units of: 1) 53 to 54 mol % of an aromatic carboxylic acid; 2) 47 to 36 mol % of an aliphatic acid at least 50% of which is azelaic acid; B) a diol component selected from the group consisting of C3, C4 and C6 diols said AAPE being disintegrated according to the Standard ISO 20200 in 90 days.
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Citations
20 Claims
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1. Polymeric composition comprising
A) a biodegradable aliphatic/aromatic copolyester (AAPE) comprising: -
a) an acid component comprising repeating units of; 53 to 64 mol %, of a polyfunctional aromatic carboxylic acid; 47 to 36%, of an aliphatic acid at least 50% of which is azelaic acid; b) a diol component selected from the group consisting of C3, C4 and C6 diols; said AAPE being disintegrated according to the Standard ISO 20200 in 90 days and having; a density of less than a 1.22 g/cc; a number average molecular weight Mn of 40,000-140,000; an inherent viscosity of 0.8-1.5; a Elastic Modulus higher than 100 Pa; and a polydispersity index determined by means of GPC of between 1.8 and 25; B) at least one other polymer selected from other polyesters of the aliphatic/aromatic type or biodegradable polymers of natural origin or of synthetic origin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification