Unsulfurized, alkali metal-free, additive for lubricating oils

Details Unsulfurized, alkali metal-free, additive for lubricating oils Unsulfurized, alkali metal-free, additive for lubricating oils

C - Chemistry, Metallurgy

07

C

C07C 51/15 (2006.01) C10M 129/50 (2006.01) C10M 159/22 (2006.01) C10M 163/00 (2006.01) C10M 169/04 (2006.01)

Patent

CA 2259849

An unsulfurized, alkali metal-free, detergent-dispersant composition having from 40% to 60% alkylphenol, from 10% to 40% alkaline earth alkylphenate, and from 20% to 40% alkaline earth single aromatic-ring alkylsalicylate. This composition may have an alkaline earth double aromatic-ring alkylsalicylate as long as the mole ratio of single-ring alkylsalicylate to double aromatic- ring alkylsalicylate is at least 8:1. This composition may be produced by the three-step process involving neutralization of alkylphenols, carboxylation of the resulting alkylphenate, and filtration of the product of the carboxylation step.

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