C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 105/38 (2006.01) C09K 5/04 (2006.01) C10M 171/00 (2006.01)
Patent
CA 2240124
A lubricant composition and working fluid useful in alleviating wear of aluminum surfaces in refrigeration equipment exposed to said composition and working fluid. The composition comprises an ester lubricant formed from at least one alcohol selected from the group consisting of monopentaerythritol, dipentaerythritol and tripentaerythritol and at least 80 % of at least one carboxylic acid selected from the group consisting of 2-methylbutanoic acid, 3-methylbutanoic acid, n-pentanoic acid, and isononanoic acid. The working fluid comprises the lubricant composition and a chlorine-free fluoro-group containing heat transfer fluid such as 1,1,1,2-tetrafluoroethane.
Composition lubrifiante et fluide moteur utiles pour atténuer l'usure de surfaces en aluminium dans des installations de réfrigération exposées à ladite composition et audit fluide. Cette composition comprend un lubrifiant d'ester constitué par au moins un alcool sélectionné dans le groupe constitué par monopentaérythritol, dipentaérythritol et tripentaérythritol et par 80 % au moins d'acide carboxylique sélectionné dans le groupe constitué par acide 2-méthylbutanoïque, acide 3-méthylbutanoïque, acide n-pentanoïque et acide isononanoïque. Ce fluide moteur comprend la composition lubrifiante et un liquide de transfert thermique contenant un groupe fluoro, exempt de chlore, tel que 1,1,1,2-tétrafluoroéthane.
Cognis Ip Management Gmbh
Henkel Corporation
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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