摘要 |
<p>The invention relates to a process for the preparation of a low-base number calcium sulfonate that is essentially chloride free. The process involves preparing a sulfonic acid solution by adding a solvent to a sulfonic acid, optionally removing dissolved or entrained SO2 or SO3, mixing the solution with a specific amount of water and calcium hydroxide, heating the mixture, separating out excess calcium hydroxide from the mixture, removing the solvent and recovering the calcium sulfonate product in oil.</p> |
申请人 |
SHELL OIL COMPANY;DE KRAKER, ABRAHAM, ROBERT;HOLMES, STEVEN, ALLEN;KAUSHIK, KRISHNA, RANGRAJ |
发明人 |
DE KRAKER, ABRAHAM, ROBERT;HOLMES, STEVEN, ALLEN;KAUSHIK, KRISHNA, RANGRAJ |