Patent ID: 8124705

Claim:
A covalent polymer network with shape memory properties comprising at least one cross-linked macro-polyacrylate, wherein said macro-polyacrylate comprises at least two acrylate groups and, includes both ester structural units and urethane structural units, wherein said macro-polyacrylate has the general Formula (I): wherein R 1 is a substituent of a macro-diol, R 2 is a substituent at least one of a low-molecular-weight diisocyanate, R 3 is at least one of hydrogen and a branched or unbranched alkyl group having from 1 to 4 carbon atoms, R 4 is at least one of a branched or unbranched alkylene group having from 2 to 10 carbon atoms and m is 0 or an integer in the range from 1 to 10, or wherein said macro-polyacrylate has the general Formula (II): wherein R 1 is a substituent of a macro-polyol, R 3 is at least one of a hydrogen and a lower alkyl, R 5 is at least one of a branched or unbranched alkylene group having from 2 to 10 carbon atoms and n is an integer of 2 or greater.