| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat resistant shape memory polymer which promotes temperature dependency of size enlargement when recovering to a primary shape. SOLUTION: A shape memory polymer composes of a precursor of shape memory polymer, which provides (A), (B), (C) and (D). Wherein, (A) means a soft segment having at least two reactive double bonds in a molecule. (B) means a fluorine free monomer having at least one reactive double bond in a molecule and its homopolymer has a glass-transition temperature of 25-200 deg.C. (C) means a monomer containing a fluorine having at least one reactive double bond in a molecule and its homopolymer has a glass-transition temperature of 25-200 deg.C. And (D) means an initiator to the soft segment, the fluorine free monomer and the monomer containing the fluorine.
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