Thermoplastic resin compositions and temperature-dependent...

C - Chemistry – Metallurgy – 08 – L

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C08L 101/00 (2006.01) D01F 1/04 (2006.01) D01F 6/46 (2006.01) D01F 6/52 (2006.01) D01F 6/56 (2006.01) D01F 6/90 (2006.01) D01F 6/92 (2006.01) D01F 6/94 (2006.01)

Patent

CA 2202693

A thermoplastic resin composition comprising a thermoplastic resin (A) and a thermoplastic polymer (B) having a glass transition temperature within the range of from -20°C to 70°C which are melt-blended in a proportion (A)/(B) of from 95/5 to 20/80 in weight ratio. The composition, upon application of an external stress in a temperature region of from a temperature about the glass transition temperature of the thermoplastic polymer (B) to the melting point thereof, is transformable to any shape that conforms to that stress, and is capable of becoming fixed to the transformed shape in a temperature region lower than the glass transition temperature. The composition can be used to provide a temperature-dependent shape-transformable/fixable product formed of the above composition.

Composition de résine thermoplastique, comprenant une résine thermoplastique (A) et un polymère thermoplastique (B) ayant une température de transition vitreuse à l'intérieur d'une plage de -20 degrés C à 70 degrés C, se mélangeant à l'état fondu dans une proportion (A):(B) de 95:5 à 20:80 en rapport massique. Cette composition, à l'application d'une contrainte externe à l'intérieur d'une plage de température entre, environ, le point de transition vitreuse du polymère thermoplastique (B) et son point de fusion, peut prendre n'importe quelle forme répondant à cette contrainte. La composition peut également être fixée dans sa nouvelle forme à l'intérieur d'une plage de température inférieure à la température de transition vitreuse. On peut se servir de cette composition pour obtenir un produit de forme modifiable ou fixe, dépendant de la température, constitué de la composition susmentionnée.

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