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US 2026/0102995 A1Published application
Biodegradable multilayer composite
AssigneesBASF SE, Universität Konstanz
InventorsTimo Benjamin WITT, Michaela AGARI, Kai Oliver SIEGENTHALER, Andreas KÜNKEL, Stefan MECKING, Marcel ECK
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Abstract
Described are to a biodegradable multilayer composite, in particular for food packaging, its use and a process for preparing said biodegradable multilayer composite.
Claims16
-15. (canceled)
A biodegradable multilayer composite, comprising:
- (i) one or more layers (i) comprising one or more polycondensates A, comprising:
- (a) structural units formed from one or more aliphatic α,ω-dicarboxylic acids having 18 to 30 carbon atoms;
- and
- (b) structural units formed from one or more aliphatic α,ω-diols having 2 to 8 carbon atoms,
- wherein polycondensate A does not contain structural units formed from any aromatic dicarboxylic acid,
- wherein the one or more layers (i) does not comprise natural wax;
- and
- (ii) one or more layers (ii) having a composition different from layer (i),
- the one or more layers (ii) comprising independent from each other one or more materials selected from the group consisting of:
- biodegradable polymers B different from polycondensates A, wherein said biodegradable polymers B are selected from the group consisting of polyesters, polyamides, polycarbonates, polyurethanes, polyethers, polyols, shellac, chitosan, chitin, cellulose hydrates, callose, starch, starch based materials, proteins, and protein based materials, and copolymers thereof;
- and
- inorganic materials selected from the group consisting of metals, metalloids, oxides of metals, oxides of metalloids, nitrides of metals and nitrides of metalloids.
9 more elements
Dependencies are inferred from the claim text.