Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Croda Priolube 3959 Diester Intermediate

Croda Priolube 3959 Diester Intermediate is a high-purity synthetic diester base fluid from Croda’s Priolube series, engineered for exceptional thermal/oxidative stability and low-temperature performance in advanced lubricants, metalworking fluids, and aviation applications.
  • croda priolube 3959 diester intermediate_a32c40c9
  • croda priolube 3959 diester intermediate_a32c40c9

Features Of Croda Priolube 3959 Diester Intermediate

  1. Highly stable, low-volatility diester intermediate derived from renewable feedstocks.

  2. Excellent low-temperature fluidity and pour point performance (≤ −45 °C).

  3. Superior hydrolytic stability under demanding lubrication conditions.

  4. Low toxicity profile with favourable ecotoxicological data for industrial handling.

  5. Designed for consistent reactivity in downstream synthesis of high-performance synthetic lubricants.

Typical Applications Of Croda Priolube 3959 Diester Intermediate

  1. Synthesis of biodegradable hydraulic fluids for off-road and marine equipment.

  2. Key building block for aviation turbine oil additives requiring thermal robustness.

  3. Intermediate in formulating low-SAPS (Sulphated Ash, Phosphorus, Sulphur) engine oils.

  4. Component in high-stability compressor lubricants for natural gas and refrigeration systems.

  5. Enabling technology for next-generation wind turbine gear oils with extended drain intervals.

Specifications Of Croda Priolube 3959 Diester Intermediate

Chemical TypeBranched-chain diester (C8–C10 mixed alkyl adipate)
Product FormClear, colourless to pale yellow liquid
AppearanceHomogeneous, free from visible particulates or haze
Primary ApplicationsSynthetic lubricant base stock intermediate
Key FeaturesRenewable carbon content >70%, non-GMO feedstock origin
BenefitsReduced formulation complexity, enhanced oxidation resistance vs. linear esters
Density (20 °C)0.92–0.94 g/cm³
Viscosity (40 °C)8.5–9.5 cSt


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