| 摘要 |
A sulfonated product of butadiene or isoprene oligomer of the formula: <IMAGE> wherein one of R1 and R1' is hydrogen or methyl and another one is hydrogen; R2' is hydrogen or methyl; one of X1 and X2 is -SO3M and another one is hydrogen; a and b are each an integer satisfying the conditions; n = a + b, 2 < n < 40 and 0 < b; M is hydrogen, Na, K, Li or -NR3R4R5R6; and R3, R4, R5 and R6 are each hydrogen or an alkyl having 1 to 6 carbon atoms, which has specific properties, particularly excellent hard water resistance, and is useful for various utilities, for instance, as a surfactant, emulsifier, or the like, and a process for the production of the sulfonated product.
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