Multifunctional dispersants

C - Chemistry – Metallurgy – 10 – M

Patent

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Details

C10M 159/12 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2597728

The present invention provides a composition comprising the product prepared by hearing together: (a) a dispersant; and (b) a 1,3-dicarboxylic acid or 1,4- dicarboxylic acid of an aromatic compound, or a reactive equibalent thereof; and at least one of: (c) 2,5-dimercapto-1,3,4-thiadiazole or a hydrocabyl- substituted 2,5-dimercapto-1,3,4-thiadiazole, or an oligomer thereof; (d) a borating agent; and (e) a phosphorus acid compound, or a reactive equivalent thereof, said heating being sufficient to provide a reaction product of (a), (b), and (c), (d), or (e), which is soluble in an oil of lubricating viscosity. The invention further provides a use for the composition.

L'invention concerne une composition contenant un produit préparé en chauffant ensemble (a) un agent dispersant et (b) un acide 1,3-dicarboxylique ou un acide 1,4-dicarboxylique d'un composé aromatique ou un équivalent réactif de celui-ci ; ainsi qu'au moins un élément parmi (c) 2,5-dimercapto-1,3,4-thiadiazole ou un 2,5-dimercapto-1,3,4-thiadiazole substitué hydrocarbyle ou un oligomère de celui-ci, (d) un agent de boratation et (e) un composé acide phosphoré ou un équivalent réactif de celui-ci, ce chauffage étant suffisant pour obtenir un produit réactionnel de (a), (b), et (c), (d), ou (e), lequel est soluble dans une huile à viscosité de lubrification. La présente invention porte également sur une utilisation de ladite composition.

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