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OwnerNabi A. Khodzhakhanov, Takhir M. Makhmudov +1inventors
InventorsNabi A. Khodzhakhanov, Takhir M. Makhmudov, Karim S. Akhmedov
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A method for preparing anion surface-active substances consists in that phenol extract, obtained in petroleum distillation at temperatures within the range from 360 to 500.degree. C, is alkylated with propylene oxide in the presence of a metal halide. Thus obtained alkyl aromatic alcohols, having the number of carbon atoms from 22 to 32, are sulphoesterified with sulphamic acid in the presence of urea in a medium of organic solvents. The anion surface-active substances are finally recovered from the esterificate by extraction with lower aliphatic alcohols. The anion surface-active substances have the following general formula: R--Ar--(CH.sub.2).sub.3 --O--SO.sub.3 NH.sub.4, where R is an aliphatic radical having the number of carbon atoms from 9 to 15 and Ar is a mixture of benzene, naphthalene, and anthracene. One per cent aqueous solutions of the proposed anion surface-active substance reduce the surface tension of water to 27 - 28 erg/sq.cm.
Anion surface-active substances having the general formula R -- Ar -- (CH.sub.2).sub.3 -- O -- SO.sub.3 NH.sub.4, wherein R--Ar is a radical resulting from phenol extracts obtained from the bottoms of petroleum distillation where R is an aliphatic radical having the number of carbon atoms from 9 to 15 and Ar is a mixture of benzene, naphthalene and anthracene radicals.
A method for preparing anion surface-active substances having the formula R--Ar--(CH.sub.2).sub.3 --O--SO.sub.3 NH.sub.4, wherein R--Ar is a radical resulting from phenol extracts obtained from the bottoms of petroleum distillation at temperatures of from 360 to 500.degree. C. wherein R is an aliphatic radical of from 9 to 15 carbon atoms and Ar is a mixture of phenylene, naphthalene and anthracene radicals;
A method for preparing anion surface-active substances having the formula R--Ar--(CH.sub.2).sub.3 --O--SO.sub.3 NH.sub.4, wherein R--Ar-- is a radical resulting from phenol extracts obtained from the bottoms of petroleum distillation at temperatures of from 360 to 500.degree. C. wherein R is an aliphatic radical having from 9 to 15 carbon atoms and Ar is a mixture of phenylene, naphthalene and anthracene radicals;
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