Aqueous concentrates of salts of .alpha.-sulfonated fatty...

Details Aqueous concentrates of salts of .alpha.-sulfonated fatty... Aqueous concentrates of salts of .alpha.-sulfonated fatty...

C - Chemistry, Metallurgy

11

D

260/494.5

C11D 11/04 (2006.01) B01F 17/08 (2006.01) C07C 309/17 (2006.01) C11D 1/28 (2006.01) C11D 1/12 (2006.01)

Patent

CA 1269993

ABSTRACT OF THE DISCLOSURE Aqueous concentrates of alkali metal salts of .alpha.-sulfonated fatty acid alkyl esters (ester sulfonate salts) which are pumpable at temperatures of at least 60°C are obtained without the addition of viscosity regulators by preparing pastes containing at least about 60% by weight of ester sulfonate salts derived from C16 and/or C18 fatty acids. More particularly, the concentrates contain less than 10 mole % of ester sulfonate salts with fatty acids containing fewer than 16 carbon atoms. The concentrates are obtained by neutralizing the crude ester sulfonates with con- centrated alkali hydroxide solution with intensive cooling at temperatures of at most 90°C.

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