Esterification process
AssigneeThe Dow Chemical Company
InventorPaula R. Norman
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Abstract
A process for esterifying terminal hydroxyl groups of a polyoxyalkylene compound comprising one or more ring opened tert.-butyl or tert.-amyl glycidyl ether groups, without removing a significant portion of these tert.-alkyl ether groups. The process is conducted by contacting the polyoxyalkylene compound with an organic, carboxylic acid or anhydride in the liquid phase, in the presence of a small but catalytically effective amount of a Lewis base.
Claims13
A process for esterifying terminal hydroxyl group(s) of a polyoxyalkylene compound bearing one or more terminal hydroxyl, said compound comprising at least one oxyalkylene unit represented by the formula ##STR2## where R represents a tert.-butyl or a tert.-amyl group, without removing a significant portion of the R groups therein, said process comprising contacting, in the liquid phase, said compound with an organic, carboxylic acid or anhydride in the presence of a small but catalytically effective amount of a Lewis base.
Dependencies are inferred from the claim text.