Stabilization of polyalkoxylate nonionic surfactants

Details Stabilization of polyalkoxylate nonionic surfactants Stabilization of polyalkoxylate nonionic surfactants

C - Chemistry, Metallurgy

07

C

260/642.1, 260/3

C07C 41/34 (2006.01) C07C 43/04 (2006.01) D06M 13/00 (2006.01)

Patent

CA 1069519

Abstract of the Disclosure Liquid polyalkoxylate nonionic surfactant composi- tions are obtained that display improved stability when exposed to air at moderately elevated temperatures, such as 190 to 250°C. These compositions differ from those made and used in accordance with prior art in that they contain a significant and effective amount of ions of a metal, pref- erably an alkali metal such as potassium or sodium; and desirably, they do not contain anions of relatively non- volatile nature, such as phosphate, but rather, to the extent that anions are present, they are of volatile nature, such as acetate, propionate, butyrate, valerate or hexanoate. Such surfactant compositions of improved sta- bility can be made, for example, by conducting the poly- alkoxylation reaction in the presence of 0.6 weight percent of KOH and then neutralizing with acetic acid, or by adding an equivalent weight of potassium acetate to a completely deionized liquid polyalkoxylate nonionic surfactant composi- tion prepared according to the prior art.

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