Polyether polyol and a method for the manufacture of mouldable polyester containing said polyether polyol
AssigneeUnichema Chemie B.V.
InventorsShirou Kojima, Katsunobu Mochizuki
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Abstract
Polyether polyol having the following chemical formula (1): HO—(AO)mZO—(BO)n—H, which is suitable for the manufacture of polyester, polyurethane elastomer and polyurethane paint showing an excellent hydrolysis resistance is disclosed. In this formula, Z is a dimer diol residue; A and B are the same or different alkylene groups having 2-4 carbon atoms; and m and n are the same or different integers of 0 or more where 2≦(m+n)≦40. Also disclosed is a method for the manufacture of mouldable polyester containing the above-mentioned polyether polyol as one of the constituting units.
Claims9
A method for the manufacture of a moldable polyester, comprising the reaction of an alkylene glycol having 2-4 carbon atoms, an aromatic dicarboxylic acid or dialkyl ester thereof, and a polyether polyol of the formula HO—(AO)mZO—(BO)n—H (in which Z is a dimer diol residue, A and B are the same or different alkylene groups having 2-4 carbon atoms, and m and n are the same or different integers of 0 or more where 2≦(m+n)≦40).
Dependencies are inferred from the claim text.