Low odor extreme pressure agent, gear oil additive composition, gear oil composition, and method for producing the same

Extreme pressure agents prepared by using low-odor bixanthan ester derivatives solve the odor problem caused by sulfurized isobutylene in gear oils, achieving high-efficiency anti-wear and anti-sintering properties while reducing odor, making them suitable for gear oil products in high-load and high-temperature environments.

CN122233963APending Publication Date: 2026-06-19CHINA PETROLEUM & CHEMICAL CORP +1
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-12-18
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing gear oil products have an unbearable odor problem due to the use of sulfurized isobutylene, which affects the environment and human health.

Method used

Using low-odor bixanthanate derivatives as extreme pressure agents, extreme pressure agents are prepared by reacting hydrocarbon xanthanates, hydrogen peroxide and acetic acid in a solvent in a specific ratio. The extreme pressure agents are then combined with other additives to form a gear oil additive composition, including anti-wear agents, dispersants, antioxidants and metal corrosion inhibitors, and blended into a low-odor gear oil composition.

Benefits of technology

The prepared gear oil composition exhibits excellent anti-wear and anti-sintering capabilities, while significantly reducing odor, making it suitable for high-load and high-temperature environments.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122233963A_ABST
    Figure CN122233963A_ABST
Patent Text Reader

Abstract

This invention relates to low-odor extreme pressure agents, gear oil additive compositions, gear oil compositions, and methods for their preparation. The extreme pressure agents comprise components having the structure shown in Formula I, where n is a positive integer from 1 to 5; R1 and R2 may be the same or different; R1 and R2 are independently selected from C... 1～12 Alkyl, substituted or unsubstituted C 3～10 cycloalkyl, substituted or unsubstituted C 6～14 aryl or the structure shown in Formula II; in Formula II, R3 is selected from C 1‑4 Alkylene; the substituted C 3～10 Substituents of cycloalkyl groups, substituted C 6～14 The substituents of the aryl group are each independently selected from hydrogen, halogen, and C. 1～5 One or more alkyl groups. The extreme pressure agent and gear oil additive composition of the present invention has a low odor, mainly solving the problem of unbearable odor caused by the addition of sulfurized isobutylene in existing products.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Open gear oil composition and preparation method thereof

    CN115505450B

  • Gear oil composition

    CN117625272A