Patent ID: 8124691
Filing Date: 2012-02-28
Classification: C08F,C08G,C08J,C08L

Abstract:
1. A shape memory polymer comprising at least two switching segments, in which the shape memory polymer is an AB polymer network in which one of the switching segments is crosslinked by the other switching segment, which is bound terminally at both ends, and in which a first switching segment is based essentially on a polyester of the general formula I, where n=1, . . . , 6, or a copolyester of general formula I with different values of n, or a derivative of these, and a second switching segment is based essentially on a polyacrylate of general formula II, in which R denotes H or CH and in which p and q are selected so that the first and second switching segments in the shape memory polymer each form a segregated phase with each phase having at least one transition temperature independently selected from a glass transition temperature and a melt temperature so that the polymer can assume at least two temporary shapes (TF