C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 65/05 (2006.01) C07C 51/15 (2006.01) C07C 51/41 (2006.01) C07C 65/19 (2006.01) C07F 3/04 (2006.01) C10M 129/54 (2006.01) C10M 159/22 (2006.01)
Patent
CA 2276892
An overbased alkaline earth metal single-aromatic ring hydrocarbyl salicylate- carboxylate is produced by overbasing a mixture of a single-aromatic ring hydrocarbyl salicylate, at least one solvent, a metal hydroxide, and an alkyl polyhydric alcohol alkaline earth metal hydroxide, by contacting that mixture with carbon dioxide under overbasing reaction conditions. The alkyl group of the alkyl polyhydric alcohol has from one to five carbon atoms. The overbased metal single-aromatic ring hydrocarbyl salicylate is treated, before, during, or subsequent to overbasing, with a long-chain carboxylic acid to form a single-aromatic ring hydrocarbyl salicylate-carboxylate.
On produit un carboxylate-salicylate d'hydrocarbyle à un seul noyau aromatique de métal alcalino-terreux surbasé par surbasage d'un mélange de salicylate d'hydrocarbyle à un seul noyau aromatique, au moins un solvant, un hydroxyde de métal et un hydroxide de métal alcalino-terreux d'alcool polyhydrique alkyle, par mise en contact de ce mélange avec du dioxyde de carbone sous des conditions de réaction de surbasicité. Le groupe alkyle de l'alcool polyhydrique alkyle comporte de un à cinq atomes de carbone. Le salicylate d'hydrocarbyle à un seul noyau aromatique de métal surbasé est traité avant, pendant ou après le surbasage, avec un acide carboxylique à longue chaîne pour obtenir un carboxylate-salicylate d'hydrocarbyle à un seul noyau aromatique.
Campbell Curtis B.
Le Coent Jean-Louis
Triconnet Thierry
Chevron Chemical S.a.
Sim & Mcburney
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