Alkaline earth alkylaryl sulfonates, their application as an...

Details Alkaline earth alkylaryl sulfonates, their application as an... Alkaline earth alkylaryl sulfonates, their application as an...

C - Chemistry, Metallurgy

07

C

C07C 309/62 (2006.01) C10M 135/10 (2006.01) C11D 1/12 (2006.01) C10M 159/24 (2006.01)

Patent

CA 2336689

An alkaline earth alkylaryl sulfonate having a BN of at least 250, wherein the aryl radical is not phenol, wherein the alkyl chain is a linear chain that contains between 14 and 40 carbon atoms, and wherein the mole % of the aryl-sulfonate radical fixed on position 1 or 2 of the linear alkyl chain is between 13% and 30%. Such an alkaline earth alkylaryl sulfonate has improved compatibility, solubility, and foaming performances while having low color and no skin formation. The starting alkylate has a low iodine number, a very high level of monoalkylate, and, as a consequence, a high yield at the sulfonation step.

L'invention concerne des alkylarylsulfonates alcalino-terreux possédant un indice d'acidité égal ou supérieur à 250, dans lesquels les radicaux aryle ne sont pas des phénols, la chaîne alkyle est une chaîne linéaire contenant de 14 à 40 atomes de carbone, et le pourcentage molaire de radicaux arylsulfonate fixés aux positions 1 ou 2 de ladite chaîne est compris entre 13 % et 30 %. De tels alkylarylsulfonates présentent une compatibilité, une solubilité et des performances de moussage améliorées tout en étant incolores et exempts de formation de peaux. L'alkylat de départ possède un faible indice d'iode, une teneur en monoalkylat élevée et, par conséquent, un rendement élevé lors de la sulfonation.

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