High-viscosity, neutral polyol esters

C - Chemistry – Metallurgy – 07 – C

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C07C 69/33 (2006.01) C07C 69/76 (2006.01) C10M 105/38 (2006.01) C10M 105/40 (2006.01) C10M 105/42 (2006.01)

Patent

CA 1317974

ABSTRACT OF THE DISCLOSURE Synthetic polyol esters with lubricating oil properties based on substantially neutral esterification products of a polyhydric alcohol with selected monocarboxylic acids and, optionally, polybasic carboxylic acids, wherein the polyfunctional alcohol component is dipentaerythritol which is esterified with I branched C8-C16 fatty acids (class A acids) or with II mixtures of linear C8-C14 fatty acids (class B acids) with branched fatty acids of class A and, optionally, limited quantities of polybasic carboxylic acids of the following classes C, D and/or E incorporated in the polyester molecular by condensation: class C acids: di- and/or tricarboxylic acids in the range from C6 to C54 class D acids: difunctional fatty acids which have been obtained by addition of acrylic acid onto the double bonds of oleic acid, linoleic acid and/or linolenic acid class E acids: aromatic and/or paraffinic, cyclic polycarboxylic acids containing from 2 to 6 acid functions.

555085

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