Polymer polyol and stabilizer systems

Details Polymer polyol and stabilizer systems Polymer polyol and stabilizer systems

C - Chemistry, Metallurgy

08

F

C08F 290/06 (2006.01) C08F 283/06 (2006.01) C08G 18/63 (2006.01) C08G 65/08 (2006.01)

Patent

CA 2314324

Stabilizer precursors and preformed stabilizers having induced unsaturation, and prepared from low intrinsic unsaturation-containing polyoxyalkylene polyether polyols may be used to form polymer polyols of higher solids content, lower viscosity, and superior filterability and particle size than polymer polyols prepared from stabilizers derived from polyols having higher intrinsic unsaturation, even when the latter are coupled to form high molecular weight stabilizers.

L'invention concerne des précurseurs stabilisants et des stabilisants préformés à insaturation induite, obtenus à partir de polyols de polyéther de polyoxyalkylène à faible insaturation intrinsèque. On peut utiliser ces produits pour constituer des polyols polymères à teneur en matières solides plus élevée, de viscosité inférieure, de filtrabilité supérieure, et à particules de taille plus importante, par rapport aux polyols polymères obtenus depuis des stabilisants issus de polyols ayant une plus grande insaturation intrinsèque, même lorsque lesdits polyols sont couplés de manière à former des stabilisants à fort poids moléculaire.

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