Patent ID: 8618238

Claim:
An epoxy shape memory polymer composition comprising: a rigid epoxy; a flexible epoxy; and at least one of a crosslinking agent or a catalytic curing agent; wherein the rigid epoxy is an aromatic epoxy having at least two epoxide groups, the flexible epoxy is an aliphatic epoxy having at least two epoxide groups, and the crosslinking agent is one of a multi-amine, an organic multi-carboxylic acid, or an anhydride; and wherein the components are present in an amount sufficient to provide, upon curing of the composition, an epoxy shape memory polymer having a change in storage modulus of 2 to 3 orders of magnitude before and after its glass transition, and a glass transition temperature below 100Â° C. wherein the total molar amount of aromatic epoxy plus aliphatic epoxy is about twice the total molar amount of cross-linking agent.