Surface-active compounds of the sulfobetaines family, their manu

Details Surface-active compounds of the sulfobetaines family, their manu Surface-active compounds of the sulfobetaines family, their manu

1985-08-20

1987-11-03

Evans, J. E.

Compositions

Preservative agents

Anti-corrosion

252 8554, 252545, 26050112, C07C14314, C07C14310, B01F 1700, C09K 300

Patent

active

047042290

ABSTRACT:
New surface-active compounds of the sulfobetaines group are manufactured. They comply with the general formula: ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 is substantially a hydrocarbon radical, each of R.sub.4 and R.sub.5 is a hydrogen atom or substantially a hydrocarbon radical and R.sub.6 is a hydrogen atom or a hydrocarbon radical, R.sub.1 to R.sub.6 radicals containing together from 12 to 30 carbon atoms, n is an integer equal to 2 to 3, Z may be a CH.sub.3 radical or a hydroxy group, p may be 0 or 1 with, when Z is a hydroxy group and p is equal to 1, a value of 1 for m and for q; when Z is a methyl radical, with a value of 1 for p, a value of 2 for m and a value of 0 or 1 for q and, when p=0, a value of 2, 3 or 4 for the sum (m+q).
These new surfactants are useful in enhanced oil recovery as micellar systems consisting of aqueous solutions and microemulsions.

REFERENCES:
patent: 3198822 (1965-08-01), Mannheimer
patent: 3280179 (1966-10-01), Ernst
patent: 3594411 (1971-07-01), Kite et al.
patent: 4259191 (1981-03-01), Wagner
patent: 4267123 (1981-05-01), Chen et al.
patent: 4381980 (1983-05-01), Ballschuh et al.
patent: 4383929 (1983-05-01), Bertocchio et al.

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