C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 105/42 (2006.01) C10M 111/02 (2006.01) C10M 129/78 (2006.01) C10M 169/04 (2006.01)
Patent
CA 2655040
Proposed are lubricant compounds with a good shear stability defined by the loss of the kinematic viscosity at 100 °C, containing base oil and a synthetic complex ester, the complex ester having a kinematic viscosity at 40°C of greater than 400 and up to 50,000 mm2/s and being obtained by conversion of a) polyols and monocarbonic acids and dicarbonic acids, or of b) polyols and mono-alcohols and dicarbonic acids, or of c) polyols and mono-alcohols and monocarbonic acids and dicarbonic acids. In addition the use of the said lubricant compounds containing the complex esters as oils for vehicle transmission, axles, industrial drives, compressors, turbines or engines is proposed.
L'invention concerne des compositions de lubrifiants avec une bonne stabilité au cisaillement, déterminée par la perte de viscosité cinématique à 100 °C, contenant une huile de base et un ester complexe synthétique. L'ester complexe présente une viscosité cinématique à 40 °C supérieure à 400 et jusqu'à 50 000 mm2/s et est obtenu par réaction a) des polyols et des acides monocarboxyliques et dicarboxyliques ou b) des polyols et des monoalcools et acides dicarboxyliques ou c) des polyols et des monoalcools et acides monocarboxyliques et acides dicarboxyliques. Par ailleurs, on propose l'utilisation des compositions de lubrifiants citées, contenant les esters complexes, comme huile de boîte de vitesses, d'axe, d'engrenages industriels, de compresseurs, de turbines ou de moteur.
Bala Vasu
Busch Stefan
Iking Rudolf
Rettemeyer Dirk
Roder Jurgen
Cognis Ip Management Gmbh
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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