Lubricant additive formed by neutralisation of a sulphurised...

Details Lubricant additive formed by neutralisation of a sulphurised... Lubricant additive formed by neutralisation of a sulphurised...

C - Chemistry, Metallurgy

10

M

260/135, 253/90

C10M 159/22 (2006.01)

Patent

CA 1094053

ABSTRACT OF THE DISCLOSURE A lubricant additive is produced by neutralising with an alkaline earth metal oxide or hydroxide a sulphurised alkyl phenol containing at least 4 weight per cent sulphur in admixture with a Mannich base formed from an alkylene or polyalkylene polyamine, an alkyl phenol and formaldehyde at elevated temperature in the presence of a hydroxylic solvent, the Mannich base being pre-prepared or prepared "in situ". Neutralisation can be effected in the presence of a ca? oxylic acid, such as acetic acid. In an additional step the neutralised product is reacted with carbon dioxide in the presence of the hydroxylic solvent.

275057

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