Esters as components of lubricants

Details Esters as components of lubricants Esters as components of lubricants

C - Chemistry, Metallurgy

07

C

253/119, 260/490

C07C 69/22 (2006.01) C07C 67/00 (2006.01) C07C 67/08 (2006.01) C07C 69/00 (2006.01) C07C 69/02 (2006.01) C07C 69/18 (2006.01) C07C 69/30 (2006.01) C07C 69/33 (2006.01) C09K 3/00 (2006.01) C10M 105/32 (2006.01) C10M 105/38 (2006.01) C10M 129/74 (2006.01)

Patent

CA 1060040

ABSTRACT OF THE DISCLOSURE: This invention proposes new esters which can be used in the formulation of multigrade lubricating oils for improving the viscosity thereof. Such esters are produced by reacting a) mixtures of tri-, tetra- and hexa-functional polyols of the following type: Image wherein R1 may be -CH2OH, - C2H5 or: Image , in which the molar ratios of the trifunctional polyol to the other polyols added are in the range of 0.5:1 to 10:1 and in which the molar ratio of the hexafunctional polyol is in the range of 0 to 1.2:1, with b) mixtures of saturated linear monocarboxylic acids constituted by (1) one or more acids containing from 7 to 8 carbon atoms and by (2) one or more acids containing from 12 to 18 carbon atoms, in which the molar ratio of acid (1) to acids (2) is in the range of 1.5:1 to 6:1.

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