Polyphenolics as lubricant oil additives

Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Compound of indeterminate structure – prepared by reacting an...

Reexamination Certificate

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C508S453000, C508S454000, C508S457000, C508S476000, C560S145000

Reexamination Certificate

active

07494961

ABSTRACT:
A process for preparing an oligomeric phenolic detergent composition comprising contacting an oil soluble alkylphenol with an alkaline earth metal base, an alpha amino acid, and a C1to C6aldehyde, in the in the presence of a C2to C6alkylene glycol and a C2to C4carboxylic acid; and reacting under reactive conditions at a temperature of from 150° C. to 225° C. The oligomeric phenolic detergent product can be employed in a lubricating oil.

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