发明名称 |
PREPARATION OF HIGHLY BASIC CALCIUM SULFONATE |
摘要 |
PURPOSE:To obtain a pure, highly basic calcium sulfonate with a high Ca content by passing CO2 through a mixture of an oil-soluble sulfonic acid, a hydrocarbon solvent, methanol and calcium hydroxide to carbonate the mixture, thus enabling the separation and removal of water as a by-product to be performed readily. CONSTITUTION:CO2 is passed through a mixture of an oil-soluble sulfonic acid or an alkaline earth metal salt of sulfonic acid (e.g. calcium sulfonate); an aromatic or aliphatic hydrocarbon solvent (e.g. toluene); methanol; oil; and calcium hydroxide (in an amount exceeding the theoretical amount that is needed for the neutralization of sulfonic acid) to carbonate the mixture. The amount of CO2 is 75-95wt.% of that of calcium hydroxide. Water as a by-product is absorbed into calcium oxide, and then removed. The mixed solvent in which calcium hydroxide and calcium oxide are suspended is recycled for the next preparation of a highly basic calcium sulfonate. |
申请公布号 |
JPH04110396(A) |
申请公布日期 |
1992.04.10 |
申请号 |
JP19900231241 |
申请日期 |
1990.08.31 |
申请人 |
MATSUMURA SEKIYU KENKIYUUSHIYO:KK |
发明人 |
MIYAMOTO KENTARO;ITO YASUMASA;NAKAMA AKIRA;KOTANI TSUNEHIRO;KUROIWA SHINTARO |
分类号 |
C10M159/24;C10N10/04;C10N30/04;C10N40/25;C10N70/00 |
主分类号 |
C10M159/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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