Low-viscocity highly overbased phenate-carboxylate

Details Low-viscocity highly overbased phenate-carboxylate Low-viscocity highly overbased phenate-carboxylate

C - Chemistry, Metallurgy

07

C

C07C 323/20 (2006.01) C10M 159/22 (2006.01) C10M 169/00 (2006.01)

Patent

CA 2265029

A low-viscosity overbased hydrocarbyl phenate-carboxylate is produced by contacting a mixture of a hydrocarbyl phenate, at least one solvent, metal hydroxide, aqueous metal chloride, and an alkyl polyhydric alcohol containing from one to five carbon atoms with carbon dioxide under overbasing reaction conditions. The hydrocarbyl phenate is treated with a long-chain carboxylic acid, anhydride or salt thereof to form the hydrocarbyl phenate-carboxylate before, during, or subsequent to overbasing. The hydrocarbyl phenate can be sulfurized or unsulfurized.

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