Process for making alkaline-earth metal salts of alkaryl sulfoni

Details Process for making alkaline-earth metal salts of alkaryl sulfoni Process for making alkaline-earth metal salts of alkaryl sulfoni

1985-04-25

1986-10-07

Dixon, Jr., William R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252 33, 252 333, 44 76, C07C14324

Patent

active

046158413

ABSTRACT:
A novel process for making solutions of alkaline-earth metal salts of alkaryl sulfonic acids that contain about 1.5 to less than three weight percent water and that does not require an azeotropic distillation step to reduce the water of the reaction product to this level, comprises reacting an alkaryl sulfonic acid with alkaline-earth metal oxide in an organic solvent in the presence of 0.05 to less than 2.5 weight percent water. Calcium oxide, alkylbenzene sulfonic acids wherein the alkyl groups contain 10 to 14 carbon atoms, solvent mixtures of lower alkanols and non-polar hydrocarbon solvents all are representative of materials useful in the process of the invention, wherein the alkyl benzene sulfonic acid is preferably proportioned into a mixture of the other reactants and the water is supplied in admixture with a small amount of a calcium alkylbenzene sulfonate.

REFERENCES:
patent: 2779784 (1957-01-01), Sharrah
patent: 3609076 (1971-09-01), Sabol et al.
patent: 3719596 (1973-03-01), Shore et al.
patent: 4206062 (1980-06-01), Derbyshire et al.
patent: 4279837 (1981-07-01), Wellbrock

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