| 摘要 |
<p>New surface-active compounds of the sulfobetaines group are manufactured. They comply with the general formula: <IMAGE> wherein each of R1, R2 and R3 is substantially a hydrocarbon radical, each of R4 and R5 is a hydrogen atom or substantially a hydrocarbon radical and R6 is a hydrogen atom or a hydrocarbon radical, R1 to R6 radicals containing together from 12 to 30 carbon atoms, n is an integer equal to 2 to 3, Z may be a CH3 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.</p> |
