Methods for preparing normal and overbased phenates

Details Methods for preparing normal and overbased phenates Methods for preparing normal and overbased phenates

C - Chemistry, Metallurgy

07

C

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

Patent

CA 2171569

Processes for preparing normal and overbased calcium sulfurized alkylphenates. The processes are characterized by a sulfurization reaction using a lower carboxylic acid catalyst which does not use a polyol promoter, e.g., ethylene glycol. The process affords a calcium sulfurized phenate product which is essentially free of polyol oxidation products. The products are useful as additives for lubricating oils.

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