Novamont S.p.a.

Ministero Dell'universita'e Della Ricerca Scientifica Technologica

Giandomenico Cella

Catia Bastioli

Giovanni Floridi

Tiziana Milizia

Maurizio Tosin

Andrea Scaffidi Lallaro

Marco Foa'

Fernanda Farachi

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 C, Cand Cdiols said AAPE being disintegrated according to the Standard ISO 20200 in 90 days.

Biodegradable aliphatic-aromatic copolyester

Biodegradable aliphatic/aromatic copolyester comprising 50 to 60 mol % of an aromatic dicarboxylic acid and 40 to 50 mol % of an aliphatic acid, at least 90% of which is a long-chain dicarboxylic acid (LCDA) of natural origin selected from azelaic acid, sebacic acid, brassylic acid or mixtures thereof; and a diol component.

Biodegradable aliphatic-aromatic polyesters

Biodegradable aliphatic/aromatic copolyester comprising: A) an acid component comprising repeating units of: 1) 49 to 63 mol % of an aromatic carboxylic acid; 2) 51 to 37 mol % of an carboxylic acid, at least 50% of which is brassylic acid; B) a diol component; said copolyester being disintegrated according to the Standard ISO 20200 in 90 days.

Biodegradable aliphatic-aromatic polyester

Biodegradable aliphatic/aromatic copolyester comprising 49 to 66 mol % of an aromatic polyfunctional acid; 51 to 34 mol % of an aliphatic acid, at least 70% of which is sebacic acid; and butandiol; and blends containing such copolyester.

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 C, Cand Cdiols; said AAPE being disintegrated according to the Standard ISO 20200 in 90 days.

Biodegradable aliphatic/aromatic copolyester comprising: A) an acid component comprising repeating units of: 1) 49 to 63 mol % of an aromatic carboxylic acid; 2) 51 to 37 mol % of an aliphatic carboxylic acid, at least 50% of which is brassylic acid; B) a diol component; said copolyester being disintegrated according to the Standard ISO 20200 in 90 days.

Polyester resins formed by recurring units X&equals;&lsqb;O&mdash;(CH ) &mdash;OCO&mdash;(CH ) &mdash;CO&rsqb; and/or Y&equals;&lsqb;O&mdash;(CH ) &mdash;CO&rsqb;, where the half-sum of n&plus;m is equal to or greater than 6 and k is a number equal to or greater than 6, or by copolymers comprising units and/or sequences having the formula x &lsqb;O&mdash;(CH ) &mdash;OCO&mdash;(CH ) &mdash;CO&rsqb;; y &lsqb;O&mdash;(CH ) &mdash;CO&rsqb; where: i,j&equals;1-5; n &equals;2-22; m &equals;0-20; k &equals;1&equals;21; (Formula (1)) and x and y vary between 0 and 1 and are molar fractions of the various units such that (Formula (2)), are used for the preparation of products in which a permeability to water vapour of less than 350 g&times;30 &mgr;m/m per day, measured at 38&deg; C. and 90% RH and good biodegradability are required.

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Novara, Italy

Giandomenico Cella