SYNTHESIS OF MAGNESIUM SULFONATE

PROBLEM TO BE SOLVED: To provide a method for preparation of an overbased magnesium sulfonate using MgO of any grade among light-burned, hard-burned or dead-burned interchangeably or with mixtures of different grades.SOLUTION: A method for preparation of an overbased magnesium sulfonate of present i...

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Bibliographische Detailangaben
Hauptverfasser:	PHILLIPS DANIEL, MARSH ADAM PAUL, THOMAS DANIEL WILKINSON, SKINNER PHILIP
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY FUELS LUBRICANTS LUBRICATING COMPOSITIONS METALLURGY PEAT PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MONOXIDE USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for preparation of an overbased magnesium sulfonate using MgO of any grade among light-burned, hard-burned or dead-burned interchangeably or with mixtures of different grades.SOLUTION: A method for preparation of an overbased magnesium sulfonate of present invention comprises: (A) preparing a mixture of sulfonic acid or salt thereof, a magnesium oxide, water, a C-Calkanol, a hydrocarbon solvent and a combination of first and second promoters, where the first promoter is a polyisobutene succinic anhydride having a molecular weight (Mw) of 500-1500 g/mol and the second promoter is a salicylic acid; and (B) carbonating the mixture with an acidic gas to form the overbased magnesium sulfonate.SELECTED DRAWING: None 【課題】軽焼、重焼又は死焼のいずれかのグレードのＭｇＯを、互換的に又は異なるグレードの混合物とともに用いることができる、過塩基性マグネシウムスルホネートを生成する方法の提供。【解決手段】過塩基性マグネシウムスルホネート清浄剤を、（Ａ）スルホン酸又は塩と、酸化マグネシウム、水、C1-C5アルカノール、炭化水素溶媒、並びに分子量（Ｍｗ）５００から１５００ｇ／ｍｏｌのポリイソブテンコハク酸無水物及びサリチル酸を第一及び第二プロモーターとする組み合わせの混合物を調製するステップ；及び（Ｂ）混合物を酸性ガスとともに過塩基性マグネシウムスルホネートを形成するため炭酸塩化するステップ、により生成する方法。【選択図】なし