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专利名称：Detergent-dispersant additives for
lubricating oils of the sulfurized and
superalkalized alkaline earth alkylsalicylate-alkylphenate type
发明人：Jean-Louis Le Coent,Jacques Cazin,Thierry
Triconnet,William W. Willis, Jr.
申请号：US08/704530申请日：19961125公开号：US05808145A公开日：19980915
摘要：Dispersant detergent additives for lubricating oils prepared by neutralization,carboxylation, sulfurization-overalkalinization, carbonation, distillation, filtering anddegassing from alkyl phenols containing 35-85% by weight of linear alkyl substituents.The process does not require, during the neutralizing phase, the presence of a thirdsolvent, which, by forming an azeotropic mixture with water promotes the elimination ofwater arising from the neutralizing reaction. The additives of the invention have improvedstability to hydrolysis and improved dispersion properties, improved compatibility andimproved foaming properties.
申请人：LE COENT; JEAN-LOUIS,CAZIN; JACQUES,TRICONNET; THIERRY,WILLIS, JR.;WILLIAM W.
代理人：Ernest A. Schaal
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