Polymeric networks
AssigneeMnemoscience GmbH
InventorsAndreas Lendlein, Annette Schmidt, Nok Young Choi
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Abstract
The present invention relates to polymeric networks, which are characterised by particular mechanical properties and which, furthermore, allow the control of thermal and mechanical properties by simple variation of the components.
Claims26
A shape memory polymeric network comprising an effective amount of copolyester segments derived from glycolic acid monomers, wherein the copolyester segments comprise up to 30 wt % of units derived from glycolic acid monomers, and wherein the total strain recovery value of the network after 5 cycles (Rr,ges) is from 85% to 99.7% and the shape fixity of the network is up to 99.5%.
A method for preparing a polymeric network comprising reacting an intermediate product of formula (1)
- with methacrylic acid molecules to form a compound functionalized by the methacrylic acid molecules;
- and
- crosslinking the functionalized compound, optionally in the presence of an additional acrylate monomer, wherein the copolyester segments comprise up to 30wt % of units derived from glycolic acid monomers, and wherein the total strain recovery value of the network after 5 cycles (Rr,ges) is from 85% to 99.7% and the shape fixity of the network is up to 99.5%.
A shape memory polymeric network comprising an effective amount of copolyester segments comprising units derived from glycolic acid monomers and at least one other hydroxy carbonic acid monomer, wherein the copolyester segments comprise up to 30 wt % of units derived from glycolic acid monomers and wherein the number average of units derived from glycolic acid monomers ranges from 1 to 4.
Dependencies are inferred from the claim text.