Elastomeric polyurethanes with improved properties based on...

Details Elastomeric polyurethanes with improved properties based on... Elastomeric polyurethanes with improved properties based on...

C - Chemistry, Metallurgy

08

G

C08G 18/12 (2006.01) C08G 18/10 (2006.01) C08G 18/32 (2006.01) C08G 18/40 (2006.01) C08G 18/42 (2006.01) C08G 18/48 (2006.01)

Patent

CA 2241268

Polyurethane elastomers of improved elongation, tensile strength and other physical properties are prepared from a polyol component containing a cristallizable polyol and from 5 to 35 equivalent percent of a low monol polyoxypropylene polyol by one-shot, quasi-prepolymer, and preferably, by prepolymer techniques involving chain extension with an aliphatic diol or aromatic amine.

On prépare des polyuréthannes élastomères à caractéristiques d'allongement, de résistance à la traction et autres caractéristiques physiques améliorées à partir d'un constituant polyol contenant un polyol cristallisable et de 5 à 35 équivalents par cent d'un polyol polyoxypropylène à faible teneur en monol au moyen de techniques impliquant des quasi-prépolymères et de préférence des prépolymères, selon un procédé en une seule phase, comprenant l'extension de chaîne avec un diol aliphatique ou une amine aromatique.

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