Low-viscosity highly overbased phenate-carboxylate

Details Low-viscosity highly overbased phenate-carboxylate Low-viscosity highly overbased phenate-carboxylate

1998-06-03

1999-08-24

Johnson, Jerry D.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic sulfur compound

508460, 508586, C10M15922

Patent

active

059424761

ABSTRACT:
A low-viscosity overbased hydrocarbyl phenate-carboxylate is produced by contacting a mixture of a hydrocarbyl phenate, at least one solvent, metal hydroxide, aqueous metal chloride, and an alkyl polyhydric alcohol containing from one to five carbon atoms with carbon dioxide under overbasing reaction conditions. The hydrocarbyl phenate is treated with a long-chain carboxylic acid, anhydride or salt thereof to form the hydrocarbyl phenate-carboxylate before, during, or subsequent to overbasing. The hydrocarbyl phenate can be sulfurized or unsulfurized.

REFERENCES:
patent: 5069804 (1991-12-01), Marsh et al.
patent: 5162085 (1992-11-01), Cane et al.
patent: 5433871 (1995-07-01), O'Conner et al.
patent: 5437803 (1995-08-01), Cane et al.
patent: 5441652 (1995-08-01), O'Conner et al.
patent: 5714443 (1998-02-01), Cane et al.
patent: 5716914 (1998-02-01), Cane et al.
patent: 5728657 (1998-03-01), Campbell et al.

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