Alkanol alkoxylate preparation
AssigneeShell Oil Company
InventorCharles L. Edwards
Life of this patent
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Abstract
A process for the preparation of alkanol alkoxylates, useful as nonionic surfactants, comprises steps for alkoxylating one or more alkanols having carbon number in the range from 8 to 18 by reaction with one or more alkylene oxides having carbon number in the range from 2 to 4 under alkaline pH and in the presence of one or more soluble compounds of calcium, and neutralizing the resulting alkoxylation mixture by addition thereto of an acid selected from the group consisting of propionic acid, benzoic acid, and mixtures thereof. The products are characterized by a single liquid phase of low viscosity.
Claims5
A process for the preparation of alkanol alkoxylates which comprises steps for alkoxylating one or more alkanols having carbon number in the range from 8 to 18 by reaction with one or more alkylene oxides having carbon number in the range from 2 to 4 under alkaline pH and in the presence of one or more soluble compounds of calcium, and neutralizing the resulting alkoxylation mixture by addition thereto of an acid selected from the group consisting of propionic acid, benzoic acid, and mixtures thereof.
Dependencies are inferred from the claim text.