Hydrogenated alkylaromatic type lubricating oil base oil, and method for producing and use thereof

By hydrogenating a mixture of long-chain alkylbenzenes and long-chain alkylphenols, a hydrogenated alkyl aromatic lubricating oil base oil containing alicyclic structures and hydroxyl groups is generated. This solves the problem of insufficient solubility and compatibility of hydrogenated alkylbenzene base oil with lubricating oil additives, and achieves a more stable additive dispersion effect.

CN122405338APending Publication Date: 2026-07-17CHINA PETROLEUM & CHEMICAL CORP +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2026-04-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing hydrogenated alkylbenzene base oils have insufficient solubility and compatibility with lubricating oil additives, leading to problems such as turbidity, precipitation, or insufficient storage stability under certain conditions.

Method used

By co-hydrogenating a mixture of long-chain alkylbenzenes and long-chain alkylphenols in the presence of a hydrogenation catalyst, a hydrogenated alkyl aromatic lubricating oil base oil containing alicyclic structures and hydroxyl groups is generated, which maintains high saturation while improving the solubility and compatibility with lubricating oil additives.

Benefits of technology

While maintaining high saturation and good stability, the solubility and compatibility of lubricating oil additives have been improved, especially under low temperature or long-term storage conditions, the additive dispersion is more stable, and no additional co-solvent is required.

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Abstract

本发明公开了一种氢化烷基芳烃型润滑油基础油及其制备方法和应用。氢化烷基芳烃型润滑油基础油由包含长链烷基苯和长链烷基酚的混合原料经共同氢化反应制得，所述氢化烷基芳烃型润滑油基础油中饱和脂环结构烃类的质量分数75.0%‑99.9%，且含有来源于长链烷基酚的游离羟基。本发明提供的氢化烷基芳烃型润滑油基础油在保持其原有高饱和度、低杂原子含量和良好基础物性水平的同时，对多种润滑油添加剂表现出更好的溶解性和相容性，尤其在低温或长期储存条件下具有更稳定的添加剂分散状态。
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Citation Information

Patent Citations

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  • Lubricating oil compositions having improved low temperature properties

    US20080300157A1

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