Polyesters comprising 2-methylglutaric acid, process for production of the said polyesters and products obtained therewith

A polyester selected from aliphatic-aromatic polyesters having a dicarboxylic component comprising repeating units deriving from at least one polyfunctional aromatic acid of the phthalic acid type and at least one aliphatic diacid, and a diol component comprising repeating units deriving from at least one aliphatic diol, wherein said aliphatic diacid comprises a mixture consisting of at least 50% by moles, with respect to the total moles of the aliphatic dicarboxylic component, of 2-methylglutaric acid and up to 50% by moles, with respect to the total moles of the aliphatic dicarboxylic component, of at least one second linear aliphatic saturated diacids, and wherein the dicarboxylic component in the aliphatic-aromatic polyesters comprises 40-55% by moles, with respect to the total moles of the dicarboxylic component comprising polyfunctional aromatic acids and aliphatic diacids, of repeating units deriving from at least one polyfunctional aromatic acid of the phthalic acid type,

• wherein said polyester has an elongation at failure above 100% and an energy at break above 8.5 MJ/m3.