Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Organic -co- compound
Patent
1998-01-20
1999-07-06
McAvoy, Ellen M.
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Organic -co- compound
C10M10522, C10M15920
Patent
active
059197412
ABSTRACT:
The present invention is directed to a process for preparing a gelled overbased calcium carboxylate which involves carbonating a carboxylic acid of 8 to 30 carbon atoms in the presence of a promoter system consisting of water and an alcohol of 1 to 8 carbon atoms, such that the mole ratio of alcohol to water is substantially constant and is such that the viscosity of the reaction mixture during carbonation step does not exceed 1 pascal second (1000 centipoise). This process prevents excessive thickening of the reaction mixture in a manufacturing unit during carbonation and affords ample time to complete the process of carbonation without premature crystallization of the calcium carbonate formed during overbasing.
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Jaynes Scot E.
Sweet William R.
Banerjee Krishna G.
McAvoy Ellen M.
Shold David M.
The Lubrizol Corporation
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