Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Organic -co- compound
Patent
1998-06-17
1999-12-14
Howard, Jacqueline V.
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Organic -co- compound
508322, 508331, C10M13502
Patent
active
060017856
ABSTRACT:
Dispersant detergent additives for lubricating oils prepared by neutralization, carboxylation, sulfurization-overalkalinization, carbonation, distillation, filtering and degassing from alkyl phenols containing 35-85% by weight of linear alkyl substituents. The process does not require, during the neutralizing phase, the presence of a third solvent, which, by forming an azeotropic mixture with water promote the elimination of water arising from the neutralizing reaction. The additives of the invention have improved stability to hydrolysis and improved dispersion properties, improved compatibility and improved foaming properties.
REFERENCES:
patent: 3036971 (1962-05-01), Otto
patent: 4902436 (1990-02-01), Hori et al.
patent: 5035816 (1991-07-01), Leone
Cazin Jacques
Coent Jean-Louis Le
Triconnet Thierry
Willis, Jr. William W.
Chevron Chemical Company LLC
Howard Jacqueline V.
Schaal Ernst A.
Toomer Cephia D.
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