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US 2010/0062036 A1Published application
Multiblock Copolymers with Shape-Memory Properties
AssigneeGKSS-Forschungszentrum Geesthacht GmbH
InventorsSteffen Kelch, Andreas Lendlein, Yakai Feng
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Abstract
The invention is directed to a multiblock copolymer with shape memory properties and a synthetic precursor of the multiblock copolymer 1. The multiblock copolymer contains: (i) a poly(depsipeptide) segment with an average molecular weight MW in the range of 1,000 to 20,000 g/mol; and (ii) a poly(ε-caprolactone) segment with an average molecular weight MW in the range of 1,000 to 10,000 g/mol.
Claims15
Multiblock copolymer with shape memory properties, containing:
- (i) a poly(depsipeptide) segment with an average molecular weight MW in the range of 1,000 to 20,000 g/mol;
- and
- (ii) a poly(ε-caprolactone) segment with an average molecular weight MW in the range of 1,000 to 10,000 g/mol.
Poly(depsipeptide) of formula (4):
- wherein X is a bridge selected from the group:
- where o=2-20 and p=1-10;
- R represents a group selected from H or a branched or unbranched C1-C10-alkyl radical;
- and
- n and m are given such that the poly(depsipeptide) has an average molecular weight MW in the range of 1,000 to 20,000 g/mol.
2 more elements
(canceled)
Dependencies are inferred from the claim text.