Thermoplastic polyurethane elastomers (tpus) prepared with...

Details Thermoplastic polyurethane elastomers (tpus) prepared with... Thermoplastic polyurethane elastomers (tpus) prepared with...

C - Chemistry, Metallurgy

08

G

C08G 18/66 (2006.01) C08G 18/32 (2006.01) C08G 18/44 (2006.01)

Patent

CA 2404753

A thermoplastic polyurethane elastomer (TPU) composition which comprises: a) a poly(trimethylene carbonate) diol (PTMC diol) as the soft segment; b) a diisocyanate; and c) at least one glycol which reacts with the diisocyanate to form the hard segment which comprises from 10 % to 55 % by weight of the composition wherein the hard segment is defined as the sum portion of diisocyanate that reacts with the glycol plus the unreacted glycol.

L'invention porte sur une composition d'élastomère de polyuréthane thermoplastique (TPU) qui comprend: a) un diol poly(triméthylène carbonate) (diol PTMC ) utilisé comme segment souple; b) un diisocyanate; et c) au moins un glycol qui réagit avec le diisocyanate de façon à former le segment rigide qui comprend de 10 % à 55 % en poids de la composition, le segment rigide étant défini comme la partie somme du diisocyanate qui réagit avec le glycol plus le glycol n'ayant pas réagi.

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