Improver for combined lubricating oil and preparation method thereof

A technology of lubricating oil and improver, applied in the directions of lubricating compositions, chemical instruments and methods, additives, etc., can solve the problem of poor shear resistance and oxidation resistance, affecting the high-temperature cleaning and dispersing performance of oil products, and not suitable for multi-stage Internal combustion engine oil and other problems, to achieve the effect of improving the cleaning and dispersing properties, improving the cleaning and dispersing performance, and saving the cost of storage and transportation

Active Publication Date: 2021-11-02
中沃能源(湖北)集团股份有限公司
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the lubricating oil industry, a single type of viscosity index improver is added to the lubricating oil. Because one viscosity index improver has advantages in one aspect and has disadvantages in others, for example, polyisobutylene PIB has excellent shear resistance. It has a certain anti-oxidation performance, but its low-temperature fluidity is relatively poor, so it is not suitable for direct use in multi-grade internal combustion engine oils. Semi-crystalline OCP viscosity index improver has improved low-temperature fluidity, but its shear resistance and oxidation resistance are not good. If the dosage is too large, it will affect the high-temperature cleaning and dispersing properties of the oil
OCP is subject to high-temperature oxidation during use, and polymer aggregation, decomposition, oxidation, etc. will cause a series of problems such as increased oil viscosity, increased acid value, decreased cleaning and dispersibility, and increased carbon deposits, which will ultimately affect the service life of the oil.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Improver for combined lubricating oil and preparation method thereof
  • Improver for combined lubricating oil and preparation method thereof
  • Improver for combined lubricating oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] A kind of preparation method of the improver of described combined lubricating oil comprises the following steps:

[0049] S1, heat up the base oil in the above mass ratio to 110-130°C in the blending tank, add the solid block of the above mass ratio of ethylene-propylene copolymer under the protection of nitrogen, and stir at 110-130°C until ethylene-propylene copolymerization The solid block of the substance and the base oil are completely fused to form a transparent fluid glue;

[0050] S2, at a temperature of 50-70°C, add polyisobutylene in the above mass ratio to the glue obtained in step S1, fully stir and maintain the temperature until the polyisobutylene is completely fused to form a transparent flowing mixed glue;

[0051] S3, cooling the mixed glue solution obtained in step S2 to normal temperature to obtain a combination lubricating oil improver.

[0052] In this technical solution, compared with the glue-like OCP, the solid OCP can prepare a combined lubric...

Embodiment 1

[0080] Preparation of compound 1:

[0081] S1, heat up the base oil with a mass ratio of 49.5% to 110°C, add a solid block of ethylene-propylene copolymer with a mass ratio of 0.5% under nitrogen protection, and stir at 110°C until the solid block of ethylene-propylene copolymer Completely blend with base oil and form a transparent fluid glue;

[0082] S2, at a temperature of 50°C, adding polyisobutylene with a mass ratio of 50% to the glue obtained in step S1, fully stirring and maintaining the temperature until the polyisobutylene is completely fused to form a transparent flowing mixed glue;

[0083] S3, cooling the mixed glue solution obtained in step S2 to normal temperature to obtain compound 1;

[0084] Among them, the molecular weight of polyisobutylene is 1,000, and the molecular weight of semi-crystalline ethylene-propylene copolymer is 100,000.

Embodiment 2

[0086] Preparation of Compound 2:

[0087]S1, heat up the base oil with a mass ratio of 89.7% to 120°C, add a solid block of ethylene-propylene copolymer with a mass ratio of 0.3% under nitrogen protection, and stir at 120°C until the solid block of ethylene-propylene copolymer Completely blend with base oil and form a transparent fluid glue;

[0088] S2, at a temperature of 60° C., adding polyisobutylene with a mass ratio of 10% to the glue obtained in step S1, fully stirring and maintaining the temperature until the polyisobutylene is completely fused to form a transparent flowing mixed glue;

[0089] S3, cooling the mixed glue solution obtained in step S2 to normal temperature to obtain compound 2;

[0090] Among them, the molecular weight of polyisobutylene is 200, and the molecular weight of semi-crystalline ethylene-propylene copolymer is 50,000.

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 discloses a combined lubricating oil improver and a preparation method thereof. The combined lubricating oil improver comprises the following components: a semi-crystalline ethylene propylene copolymer with a mass fraction of 0.3-1%, 10 ‑60% polyisobutylene, the remainder is base oil. The preparation method of the improver of the combined lubricating oil includes: S1, adding the solid block of ethylene-propylene copolymer under the protection of nitrogen, and stirring until the solid block of ethylene-propylene copolymer and base oil under the condition of 110-130°C Fully fused to form a transparent fluid glue; S2, at a temperature of 50-70°C, add polyisobutylene until it is completely fused to form a transparent flowing mixed glue; S3, the mixed glue obtained in step S2 After cooling to normal temperature, the improver of combined lubricating oil is obtained. The invention has the advantages of good low-temperature fluidity and good shear resistance, and can be widely used in the technical field of lubricating oil improvers.

Description

technical field [0001] The invention relates to the technical field of lubricating oil improvers. More specifically, the present invention relates to a combination lubricating oil improver and a preparation method thereof. Background technique [0002] In order to improve the viscosity-temperature performance of lubricating oil, polymer compounds were added to lubricating oil in the 1930s, and polyisobutylene PIB appeared in lubricating oil in the mid-1930s. However, due to poor low-temperature fluidity, it is not suitable for direct use in multi-stage internal combustion engines. Oil, ethylene propylene copolymer OCP appeared in the 1960s and 1970s. Its low-temperature fluidity has improved, but its shear resistance is average. The shear resistance is related to its molecular weight. The shear resistance of larger molecular weight is poor. The hydrogenated styrene-diene copolymer HSD has been developed, which has better low-temperature fluidity and improved shear resistanc...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C10M161/00B01F13/10B01F1/00C10N30/08C10N30/02C10N30/04C10N30/10C10N30/06
Inventor 张名雄毛凯
Owner 中沃能源(湖北)集团股份有限公司
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