Polyester polyols and their use for preparing microcellular...

Details Polyester polyols and their use for preparing microcellular... Polyester polyols and their use for preparing microcellular...

C - Chemistry, Metallurgy

07

D

260/362.3, 260/4

C07D 307/54 (2006.01) C08G 18/10 (2006.01) C08G 18/60 (2006.01) C08G 18/65 (2006.01)

Patent

CA 1266483

ABSTRACT The invention relates to a method for preparing micro- cellular polyurethane elastomer by reacting an organic isocyanate, a polyester polyol, a difunctional chain extender and a blowing agent, wherein at least a part of the polyester polyol used consists of a polyester polyol having a hydroxyl number between 28 and 112 and comprising units derived from aliphatic and/or aromatic dicarboxylic acids and from aliphatic, cycloaliphatic and/or heterocyclic glycols, as well as between 0.02 and 11 mole percent of units derived from monoalkanolamine with respect to the total amount of glycol and monoalkanolamine present in the polyester polyol.

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