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Superbasic calcium sulphonate, for addn. to lubricants - by reacting alkylbenzene sulphonic acid with moderately active calcium oxide and passage of carbon dioxide
Superbasic calcium sulphonate, for addn. to lubricants - by reacting alkylbenzene sulphonic acid with moderately active calcium oxide and passage of carbon dioxide
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机译:超碱性磺酸钙,用于添加。润滑剂-通过使烷基苯磺酸与中等活性的氧化钙反应并通过二氧化碳
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摘要
Superbasic Ca sulphonates (I) are prepd. by reacting an alkylbenzene sulphonic acid, in which the alkyl gp. has mol. wt. 250-2000, with CaO which had a moderate reactivity with water, according to AST M C 110, and bubbling CO2 into the reaction mixt. (I) is recovered by filtration or centrifuging. (I) are used in engine lubricants. (I) have high reserve alkalinity, e.g. 300 mg KOH/g, are clear, and are easily filtered. The CaO has reaction time with H2O of 8-25 mins. In the sulphonic acid the alkyl gp. is pref. polypropylene or poly-n-butene; the acid is pref. free of H2SO4. The reaction mixt. is pref. alkaline.
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机译:制备过碱式磺酸钙(I)。通过使烷基苯磺酸反应,其中烷基为gp。有摩尔。重量根据AST M C 110,使用250-2000的CaO与水具有中等反应性,并将CO2鼓泡到反应混合物中。 (I)通过过滤或离心回收。 (一)用于发动机润滑油。 (I)具有高的储备碱度,例如> 300 mg KOH / g,澄清,易于过滤。 CaO与H2O的反应时间为8-25分钟。在磺酸中的烷基为gp。是首选。聚丙烯或聚正丁烯;酸是优选的。不含H2SO4。反应混合物。是首选。碱性的。
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