| 摘要 |
A process for the production of surface-active olefine sulphonates by the sulphonation of hydrocarbon mixtures containing at least 90% by weight of mono-olefines with 8 to 22 carbon atoms in the molecule at a temperature in the range 0 DEG to 60 DEG C., comprises a first stage in which 0.65 to 1.05 moles of gaseous sulphur trioxide per mole of olefine, which sulphur trioxide has been diluted with a gas inert under the sulphonation conditions to a sulphur trioxide concentration of 0.5 to 20 volume per cent are used to sulphonate the hydrocarbon mixture and a second stage in which the product of the first stage is reacted with 0.2 to 0.6 moles of chlorosulphonic acid per mole of olefine, the total quantity of sulphonating agent used in the two stages lying in the range 1.1 to 1.5 moles per mole of olefine, the product of the second stage being warmed with water in the presence of excess acid or excess alkali at a temperature above 80 DEG C. HCl formed in the second stage may be removed by blowing with inert gases. The products comprise hydroxyalkane sulphonates and alkene sulphonates. |
