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Introduction To Diester
Classification: Company News
Mar 13,2025
Diesters are compounds formed through the esterification reaction between diols and monocarboxylic acids. They can also be prepared by reacting linear dibasic acids with branched - chain monohydric alcohols.
Performance characteristics of diesters：
- Medium viscosity: The viscosity of diesters usually falls between that of monoesters and polyol esters (e.g., ISO VG 32 - 68), making them suitable for applications with medium loads and temperature ranges.
- Excellent thermal stability: Diesters exhibit good oxidation stability at high temperatures (150°C - 180°C), making them suitable for high - temperature lubrication scenarios.
- Good low - temperature fluidity: Diesters have a low pour point (-40°C - -60°C), making them suitable for use in cold regions.
- Excellent lubricating performance: The polar ester groups of diesters can effectively adsorb on the metal surface, providing good lubricity and anti - wear performance.
- High biodegradability: The biodegradability of diesters is better than that of mineral oils but slightly lower than that of monoesters.
Application scenarios of diesters：
- Aviation turbine oils: Diesters were the main base oils for early aviation turbine oils due to their excellent thermal stability and low - temperature fluidity.
- High - temperature industrial lubricants: Such as high - temperature chain oils and compressor oils.
- Automobile engine oils: Diesters are used in some high - performance synthetic oils to improve high - temperature performance and fuel economy.
- Metalworking fluids: Diesters can be used as base oils for cutting oils and grinding oils, providing good lubricity and cooling performance.
And so on.
J&D Lubricant Chemical Co., Ltd. offers various types of diester products. Our diester product models include: JDPOE8228, JDPOE8238, JDPOE8223, JDPOE8273, and JDPOE8285. If you have any needs, please feel free to contact us.
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