| abstract |
(a) un oligomère α,ω-diol dont la structure de la chaîne est d'une polarité identique ou voisine de celle de l'oligomère α,ω -diol précédent, (b) un diisocyanate, et éventuellement (c) un allongeur de chaîne de type diol ou monoalcool tel un polyoxyde d'éthylène monofonctionnel. The present invention relates to a urethane polymer composition, characterized in that it contains: - an α, ω-diol oligomer, - an isocyanate, - a chain extender diol, and - an emulsifying agent which is the reaction product between: (a) an α, ω-diol oligomer, the chain structure of which has the same polarity or close to that of the preceding α, ω -diol oligomer, (b) a diisocyanate, and optionally (c) a chain extender of the diol or monoalcohol type such as a monofunctional polyethylene oxide. n n n It also relates to a process for preparing articles from this composition and to the molded articles thus obtained. |