Preparation of overbased magnesium sulfurized phenates

Details Preparation of overbased magnesium sulfurized phenates Preparation of overbased magnesium sulfurized phenates

C - Chemistry, Metallurgy

07

F

260/615.4

C07F 3/02 (2006.01) C10M 159/22 (2006.01)

Patent

CA 1121387

PREPARATION OF OVERBASED MAGNESIUM SULFURIZED PHENATES Abstract of the Disclosure Preparation of overbased magnesium sulfurized phenates having total base members in the range of about 200 to about 275 by a two-stage procedure, the first stage of which involves dissolving a sulfurized oil-soluble aliphatic hydrocarbyl-substituted phenol, particularly a C6-C30 alkyl phenol, in certain types of high boiling organic polar solvents, exemplified particularly by methyl "Cellosolve" (trade mark), and admixing therewith magnesium oxide in an amount such that, upon refluxing the mixture, a fully neutralized sulfurized alkyl phenol results; and wherein, in the second stage of said procedure, the composition produced in the first stage of the procedure is overbased by admixing therewith a magnesium alkoxide carbonate complex in an amount such as to produce the final overbased magnesium sulfurized phenate compositions having the aforesaid total base number.

323436

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