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    • 72. 发明公开
    • THERMOPLASTISCHES FORMGEDÄCHTNISMATERIAL
    • 热塑性塑料
    • EP3122534A1
    • 2017-02-01
    • EP15709176.0
    • 2015-03-11
    • BASF SE
    • BOKERN, StefanPRISSOK, FrankHARTWIG, SebastianPÖSELT, ElmarGOESCHEL, Julia
    • B29C61/00C08G18/48C08G18/32
    • B29C61/003B29C61/06B29K2075/00C08G18/244C08G18/3206C08G18/3215C08G18/4244C08G18/4825C08G18/4854C08G18/4879C08G18/6674C08G18/6681C08G18/758C08G18/7671C08G2280/00
    • The invention relates to a method for producing a molded body (FK), comprising producing a thermoplastic polyurethane, producing a molded body (FK*) from the thermoplastic polyurethane, heating the molded body (FK*) to a temperature below the temperature at which there is permanent deformability of the molded body (FK*) and above the switching temperature of the thermoplastic polyurethane, elongating the heated molded body (FK*) and thus obtaining a molded body (FK), and cooling the molded body (FK) to a temperature below the switching temperature of the thermoplastic polyurethane. The invention further relates to molded bodies that are or can be obtained in accordance with such a method. The thermoplastic polyurethane comprises a polyisocyanate composition, a chain extender, and a polyol composition having at least one bisphenol derivative selected from the group comprising bisphenol A derivatives having a molecular weight Mw of > 315 g/mol and bisphenol S derivatives having a molecular weight Mw of > 315 g/mol, wherein at least one of the OH groups of the bisphenol derivative is alkoxylated. The invention further relates to the use of a thermoplastic polyurethane to produce a molded body having a shape memory effect in a temperature from 20 °C to 120 °C.
    • 本发明涉及一种生产成型体(FK)的方法,包括制备热塑性聚氨酯,从热塑性聚氨酯制造成型体(FK *),将成型体(FK *)加热至低于 成型体(FK *)具有永久变形性,并且高于热塑性聚氨酯的开关温度,延长加热成型体(FK *),从而获得成型体(FK),并将成型体(FK)冷却至 温度低于热塑性聚氨酯的开关温度。 本发明还涉及根据这种方法得到或可以获得的成型体。 热塑性聚氨酯包括多异氰酸酯组合物,扩链剂和具有至少一种双酚衍生物的多元醇组合物,所述双酚衍生物选自分子量Mw> 315g / mol的双酚A衍生物和分子量Mw > 315g / mol,其中双酚衍生物的至少一个OH基团被烷氧基化。 本发明还涉及使用热塑性聚氨酯来制造在20℃至120℃的温度下具有形状记忆效应的成型体。