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US 2020/0369871 A1Published application
Polymer composition for the manufacture of thermoformed articles
AssigneeNovamont S.p.A.
InventorsAngelos RALLIS, Matteo NICOLINI
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Abstract
This invention relates to a polymer composition that is particularly suitable for use in the manufacture of thermoformed articles, which can be biodegraded in industrial composting. This invention also relates to a process for the production of the said composition and articles obtained thereby.
Claims20
A thermoformed article comprising at least one layer A and at least one layer B, wherein said layer A comprises a polymer composition for the production of thermoformed articles comprising, with respect to the sum of components i.-iv.:
- i) 20-60% by weight of at least one polyester i. comprising:
- a) a dicarboxylic component comprising with respect to the total dicarboxylic component:
- a1) 0-20% in moles of units deriving from at least one aromatic dicarboxylic acid,
- a2) 80-100% in moles of units deriving from at least one saturated aliphatic dicarboxylic acid,
- a3) 0-5% in moles of units deriving from at least one unsaturated aliphatic dicarboxylic acid;
- b) a diol component comprising, with respect to the total diol component:
- b1) 95-100% in moles of units deriving from at least one saturated aliphatic diol;
- b2) 0-5% in moles of units deriving from at least one unsaturated aliphatic diol;
- ii) 5-35% by weight of at least one polyhydroxyalkanoate ii.;
- iii) 0.01-5% by weight of at least one hydrolysis stabilizer comprising at least one compound having di- and/or multiple functional groups comprising carbodiimide groups;
- iv) 5-50% by weight of at least one filler agent
- and said layer B comprises at least one polymer selected from the group comprising diacid-diol polyesters and hydroxyl acid polyesters.
9 more elements
Dependencies are inferred from the claim text.