Process for the conversion of sulfates to sulfonates

Details Process for the conversion of sulfates to sulfonates Process for the conversion of sulfates to sulfonates

1992-07-28

1993-12-07

Cintins, Marianne M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfonic acids or salts thereof

562 42, 562110, C07C30910

Patent

active

052685047

ABSTRACT:
Disclosed is a process for increasing the selectivity in converting sulfates to sulfonates following ethoxylation and sulfation of alcohols. It is demonstrated that minimization of unethoxylated and monoethoxylated alcohols before the sulfation step will substantially reduce hydration to alcohols and increase the selectivity of the subsequent sulfonation step.

REFERENCES:
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patent: 4453023 (1984-06-01), McCain et al.
patent: 4792419 (1988-12-01), Piorr et al.
patent: 4959490 (1990-09-01), Parnell et al.
patent: 4978780 (1990-12-01), Fikentscher et al.
"Alkylethoxyethanesulphonates: Two Techniques for Improving Synthetic Conversions"; P. K. G. Hodgson, N. J. Stewart, C. E. Grand & A. M. Nicholls; The British Petroleum Company pic, Research Centre, New Technology Div., JAOCS, vol. 67, No. 11 (Nov. 1990).

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