Abstract

The industrial oil composition includes a mineral oil or a synthetic oil as a base oil and a neutral phosphorous acid ester derivative represented by formula (B) and a 2,6-di-t-butylphenol derivative represented by formula (C) as antioxidants. In formula (B), Rb21-Rb24 each independently represent a C10-16 aliphatic hydrocarbon group. In formula (C), Rc1 is a C1-12 linear or branched alkyl group.

IPC Classes  ?

• C10M 169/04 - Mixtures of base-materials and additives
• C10M 101/02 - Petroleum fractions
• C10M 105/74 - Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing phosphorus
• C10M 129/70 - Esters of monocarboxylic acids
• C10M 133/40 - Six-membered ring containing nitrogen and carbon only
• C10M 137/02 - Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
• C10M 137/04 - Phosphate esters