High-viscosity, neutral polyol esters

US5057247A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Karl Schmid · Mettmann, DE
• Uwe Ploog · Haan, DE
• Alfred Meffert · Monheim, DE

Key dates

• Filing date: Dec 21, 1987
• Grant date: Oct 15, 1991
• Expiry date: Dec 21, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

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 PA0 I--branched C.sub.8 -C.sub.16 fatty acids (class A acids) or with PA0 II--mixtures of linear C.sub.8 -C.sub.14 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: PA0 class C acids: di- and/or tricarboxylic acids in the range from C.sub.6 to C.sub.54 PA0 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 PA0 class E acids: aromatic and/or paraffinic, cyclic polycarboxylic acids containing from 2 to 6 acid functions.