Method for modifying lubricating oil additive by using thioacetic acid

A technology of lubricating oil additive and thioacetic acid, applied in the directions of additives, lubricating compositions, petroleum industry, etc., can solve the problems of poor oxidation stability, restrict the use of polyisobutylene, etc. Effect

Inactive Publication Date: 2014-04-02
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyisobutylene contains unsaturated bonds in the molecule, and its oxidatio

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] a. Mix 150g of refined epoxy polyisobutylene mixed ester and 5.625g of 95% thioacetic acid. The temperature is raised to 110°C under stirring and reacted for 5 hours to obtain a mixed solution, in which epoxy polyisobutylene and The mass ratio of mixed fatty acids is 1:0.0375;

[0020] b. Distill the unreacted thioacetic acid out of the obtained mixed liquid under reduced pressure to obtain a light yellow transparent oily sulfur-containing epoxy polyisobutylene mixed ester lubricant additive, wherein the acid value is 0.11 and the pour point is -10.

Example Embodiment

[0021] Example 2

[0022] a. Mix 150g of refined epoxy polyisobutylene mixed ester and 7.5g of 95% thioacetic acid, stir and heat up to 100℃, react for 3 hours to obtain a mixed solution, in which epoxy polyisobutylene is mixed with The mass ratio of fatty acids is 1:0.05;

[0023] b. Distill the unreacted thioacetic acid out of the resulting mixed liquid under reduced pressure to obtain a light yellow transparent oily sulfur-containing epoxy polyisobutylene mixed ester lubricant additive, wherein the acid value is 0.12 and the pour point is -12.

Example Embodiment

[0024] Example 3

[0025] a. Mix 150g of refined epoxy polyisobutylene mixed ester and 9.375g of 95% thioacetic acid, heat up to 120°C with stirring, and react for 4 hours to obtain a mixed solution, in which epoxy polyisobutylene and The mass ratio of mixed fatty acids is 1:0.0625;

[0026] b. Distill the unreacted thioacetic acid out of the obtained mixed liquid under reduced pressure to obtain a light yellow transparent oily sulfur-containing epoxy polyisobutylene mixed ester lubricant additive, wherein the acid value is 0.13 and the pour point is -15.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for modifying a lubricating oil additive by using thioacetic acid. The mixed fatty acid ester of epoxy polyisobutylene is functionally modified to obtain the extreme pressure anti-wear and anti-oxidative lubricating oil additive by using the thioacetic acid, wherein the pour point is lowered from -2 to -5 DEG C before modification to -10 to -20 DEG C after modification. A process is clean, the method is safe in implementation and convenient to operate, and large-scale production is facilitated.

Description

technical field [0001] The invention relates to a method for modifying lubricating oil additives with thioacetic acid. Background technique [0002] Polyisobutene is a general term for homopolymers of isobutene (2-methylpropylene), which is a colorless, odorless, non-toxic, high-viscosity liquid olefin. Due to the different ways of chain termination in the homopolymerization reaction, there are many types of double bonds at the end of the polyisobutylene molecule produced by the reaction. According to the different molecular weight, it can be roughly divided into low molecular weight polyisobutene and high molecular weight polyisobutene. Generally speaking, the molecular weight of low molecular weight polyisobutylene is between 350-3500. According to the mole fraction of terminal vinyl groups, it can be divided into high reactive polyisobutylene (HRPIB: Highly Reactive Polyisobutylene) and low reactive polyisobutylene (LRPIB: Lowly Reactive Polyisobutylene). Highly active...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C10M151/02C10N30/06C10N30/10
Inventor 吾满江·艾力夏木西卡玛尔·买买提
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap