| 摘要 |
<p>Compounds having the general formula: (I) where A is a C1-C4 straight or branched chain alkylene radical, B is a -SO3M, -CO2M, -PO3M2 grouping, M is hydrogen, or a cation giving a water-soluble derivative, R is hydrogen, a cation giving a water-soluble derivative, or a C1-C4 straight or branched alkyl, R1 is hydrogen, methyl or -COOH, and m is 0 or 1 and processes of preparing them. The compounds of the formula I can be used in a process for removing hydrogen sulphide from gases or liquid hydrocarbons.</p> |
