Composition of high performance bearing oil for steel plants

Patent metadata

Field	Value
Publication number	US-11242893-B2
Application number	US-201916294750-A
Country	US
Kind code	B2
Filing date	Mar 6, 2019
Priority date	Mar 6, 2018
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

The present invention relates to a Zinc free High Performance bearing oil composition for Lubrication of Bearings, Gears & Allied Equipments in Wire Rod Mill (WRM) for Steel Plants.

First claim

The invention claimed is:

1. A zinc free bearing oil composition consisting of:
(a) 0.45-0.55 weight % of di-n-octyl-phosphite, tris-nonylphenyl phosphate or i-decyl-diphenyl phosphate as an ashless antiwear or an extreme pressure agent;
(b) 0.4 to 1.0 weight % of dialkyl dithiophosphate as an antiwear, extreme pressure or FZG booster;
(c) 0.15 weight % of 3-5-bis(1-1-dimethylethyl)-4-hydroxy alkyl ester or a C 7 -C 9 alkyl ester as a phenolic oxidation inhibitor;
(d) 0.3 weight % of butylated diphenylamine as an aminic oxidation inhibitor;
(e) 0.3 weight % of calcium sulphonates as a rust or a corrosion inhibitor I having a sulphonate, wherein the calcium sulphonate has a total base number is a range of 180 to 450;
(f) 0.05 to 0.50 weight % of triazole derivative as a metal passivator;
(g) 0.02 weight % of poly methacrylates as a pour point depressant;
(h) 0.02 weight % of polyacrylate as a defoament as; and
(i) 90 to 99.9 weight % of a base,
wherein the weight % being based on the total weight of the composition and
wherein the composition is zinc free and demulsifier free.

2. The composition as claimed in claim 1 , wherein the base oil is selected from the base oil of API Group I, API Group II, API Group III, API Group IV and API Group V and mixture thereof.

3. A process for preparing zinc free bearing oil composition, wherein the process comprises mixing the additives in the amount as mentioned in claim 1 in the base oil at a temperature in the range of 60° C. to 65° C.

Assignees

• Indian Oil Corp Ltd

Inventors

• Jaiswal Anil Kumar
• Sethuraman Kannan
• Bhaskaran Sumit
• Chaudhary Rameshwar
• Mahapatra Rajendra
• Harinarain Ajay Kumar
• Saxena Deepak
• Mazumdar Sanjiv Kumar
• RAMAKUMAR Sankara Sri Venkata

Classifications

• C10M2223/04

  Phosphate esters · CPC title

• C10M2203/1006

  used as base material · CPC title

• C10N2030/24

  Emulsion properties · CPC title

• C10N2030/02

  Pour-point; Viscosity index · CPC title

• C10M2209/084

  Acrylate; Methacrylate · CPC title