Methods of preparing anion surface-active substances

Details Methods of preparing anion surface-active substances Methods of preparing anion surface-active substances

1977-11-09

1979-02-06

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252545, C07C14116, C07C14118, C11D 122

Patent

active

041384253

ABSTRACT:
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.

REFERENCES:
patent: 2758977 (1956-08-01), Knowles et al.
patent: 3265722 (1966-08-01), Dudley
patent: 3332979 (1967-07-01), Redemann
patent: 3376333 (1968-04-01), Ernst et al.
patent: 3393219 (1968-07-01), Myerly et al.
Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 15, pp. 8 and 9, and vol. 14, pp. 850 and 851, (1968).
Suga et al., J. Chem. Soc. Japan, Ind. Chem. Sect., vol. 70, pp. 487 to 491, (1967).

Affiliated with

Also associated with

Rating

Methods of preparing anion surface-active substances does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods of preparing anion surface-active substances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods of preparing anion surface-active substances will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-891207