Disclosed is a biodegradable compositions containing at least a polyester containing 2,5-furandicarboxylic acid and at least a polymer selected from the group consisting of polyhydroxyalkanoates and/or aliphatic and/or aliphatic-aromatic diacid diol polyesters, which is particularly suitable for use in the manufacture of mass-produced articles. The articles exhibit excellent mechanical properties, associated with a high barrier property against oxygen and carbon dioxide.
Claim CLM-00001. 1. A biodegradable composition comprising, with respect to the sum of components i.-iv.:
i. 20-60% by weight of at least one biodegradable polyester; ii. 20-70% by weight of at least one biodegradable polymer which is not the polyester, selected from the group consisting of polyhydroxyalkanoates and/or aliphatic and/or aliphatic-aromatic diacid diol polyesters which are not polyester i., and mixtures thereof; iii. 0-50% by weight of at least one filler; iv. 0-30% by weight of plant fibres; wherein the biodegradable polyester i. comprises: a) a dicarboxylic component comprising, with respect to the total dicarboxylic component:
a1) 85-65% in moles of units deriving from 2,5-furandicarboxylic acid or an ester thereof;a2) 15-35% in moles of units deriving from at least one saturated dicarboxylic acid selected from the group consisting of adipic acid, azelaic acid, succinic acid, sebacic acid, brassylic acid or an ester or derivative thereof;a3) 0-15% in moles of units deriving from at least one aliphatic saturated dicarboxylic acid which is not the saturated dicarboxylic acid in component a2, or esters thereof,a4) 0-5% in moles of units deriving from at least one unsaturated aliphatic dicarboxylic acid or an ester thereof;
b) a diol component comprising, with respect to the total diol component:
b1) 95-100% in moles, of units deriving from 1,2-ethanediol;b2) 0-5% in moles, of units deriving from at least one saturated aliphatic diol which is not 1,2-ethanediol;b3) 0-5% in moles of units deriving from at least one unsaturated aliphatic diol.
