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Third International Conference Lubricants Russia 2007 PolyAlphaOlefins high-performance base fluids for lubricants.

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Presentation on theme: "Third International Conference Lubricants Russia 2007 PolyAlphaOlefins high-performance base fluids for lubricants."— Presentation transcript:

1 Third International Conference Lubricants Russia 2007 PolyAlphaOlefins high-performance base fluids for lubricants

2 PolyAlphaOlefins (PAO) synthetic fluid base oils –Chemical Description –Importance in Lubricants –Manufacturing Process –Features and Benefits Objectives

3 API* Basestock Categories Manufacturing Process *API = American Petroleum Institute

4 PAOs are high-performance, tailored fluids made by chemically reacting materials of specific chemical composition to produce compounds with planned and predictable properties. What are PolyAlphaOlefins (PAO)? GC Retention Time (minutes) PAO 4 cSt Mineral Oil 4 cSt 15 Well-defined structure vs. multiple component composition of mineral oil Hydrogenated (saturated) olefin polymers Manufactured by the catalytic oligomerization of linear alphaolefins Wax-free combination of molecules of predetermined chain length

5 Why Use PolyAlphaOlefins (PAO)? PAO is used to formulate automotive and industrial lubricants with the following objectives: To protect equipment in severe operating conditions - Constant operation close to the design limits - Demanding mechanical and thermal loads - Adverse environmental conditions To optimize use of the equipment - Longer oil drain periods; less downtimes - Lower maintenance costs

6 PolyAlphaOlefins (PAO) Manufacturing Process ◄ Low Viscosity cSt at 100 °C ◄ High Viscosity 40 – 100 cSt at 100 °C ◄ Very High Viscosity 150 – 1000 cSt at 100 °C

7 Key Features –High Viscosity Index –Low-temperature fluidity –High-temperature viscosity retention –Low Pour Point –Low Volatility –Excellent Thermal, Oxidative and Hydrolytic Stability –Good Compatibility with Mineral Oils and Esters –High Shear Stability –Enhanced Film Thickness PolyAlphaOlefins (PAO)

8 PAO Mineral oil 100 o C Viscosity, cSt VI Viscosity Temperature, o C Mineral Oil Equivalent viscosity PAO Higher Viscosity Index PolyAlphaOlefin (PAO) Higher VI High Viscosity Low Viscosity Viscosity at low-temperature: PAO < mineral oil More rapid lubrication at startup. Viscosity at high-temperature: PAO > mineral oil Should provide increased protection.

9 Pour Point, o C Typical Mineral Oils PAO Kinematic Viscosity at 100 o C, cSt PAO PAO- based PolyAlphaOlefins (PAO) Lower Pour Point High Viscosity Low Viscosity

10 PAOs have lower volatility than mineral oils Low volatility may reduce oil consumption and emissions PolyAlphaOlefins (PAO) Lower Volatility °C, cSt Noack Volatility, wt% Typical Group I and II Typical Group III PAO Mineral Oils

11 Oxidative stability of PAO exceeds mineral oil Good oxidative stability for applications at elevated temperatures with air contact PAOs show excellent oxidative stability when formulated with suitable antioxidants PAOs are more responsive to antioxidants than mineral oil also to antiwear and other performance additives PolyAlphaOlefins (PAO) Oxidative Stability Oxidation Stability Test PAO Vs. Mineral Oil (2% Antioxidant) Test Conditions: 163 o C (325 o F), 72 hours Product % Vis 100°C TAN change, mg Lead loss, mg Sludge Mineral Oil Group II moderate 100 cSt PAO trace 6 cSt PAO nil 40 cSt PAO nil

12 HVI-PAO such as SpectraSyn Ultra™ exhibit superior VI and Pour Points HVI-PAO Superior VI and Pour Point better VI Mineral Oil HVI-PAO o C Viscosity, cSt Gr III High Viscosity PAO Low Viscosity Mineral oil HVI-PAO PAO High Viscosity Low Viscosity

13 Delayed onset of boundary lubrication ⇒ Increased protection against wear Reduced boundary friction ⇒ Improved efficiency HVI-PAO Improves EHL Film Thickness Speed (m/sec) Film Thickness (nm) With HVI-PAO Without HVI-PAO Theoretical Ball-on-disk, point contact test Sequence VE Wear Test Ave. Cam Wear, um Oil A Oil A + HVI-PAO Oil B Oil B + HVI-PAO Limit

14 PolyAlphaOlefins (PAO) Product Applications Most common application uses

15 PAOs are engineered high-performance molecules PAOs have excellent service behavior PolyAlphaOlefins (PAO) Summary Advantages: High Viscosity Index Wide range of viscosities (2 – 1000 cSt) Low Pour Point Low Volatility Thermal, Oxidative and Hydrolytic Stability Enhanced film thickness Formulated Lubricant Drivers: Solve a technical problem Wide range temperature application Environmental benefits Energy savings Extended service life capability Lower maintenance costs

16 Thank you Questions ?

17 ©2007 Exxon Mobil Corporation. To the extent the user is entitled to disclose and distribute this document, the user may forward, distribute, and/or photocopy this copyrighted document only if unaltered and complete, including all of its headers, footers, disclaimers, and other information. You may not copy this document to a Web site. ExxonMobil does not guarantee the typical (or other) values. Analysis may be performed on representative samples and not the actual product shipped. The information in this document relates only to the named product or materials when not in combination with any other product or materials. We based the information on data believed to be reliable on the date compiled, but we do not represent, warrant, or otherwise guarantee, expressly or impliedly, the merchantability, fitness for a particular purpose, suitability, accuracy, reliability, or completeness of this information or the products, materials, or processes described. The user is solely responsible for all determinations regarding any use of material or product and any process in its territories of interest. We expressly disclaim liability for any loss, damage, or injury directly or indirectly suffered or incurred as a result of or related to anyone using or relying on any of the information in this document. There is no endorsement of any product or process, and we expressly disclaim any contrary implication. The terms, “we”, “our”, "ExxonMobil Chemical", or "ExxonMobil" are used for convenience, and may include any one or more of ExxonMobil Chemical Company, Exxon Mobil Corporation, or any affiliates they directly or indirectly steward. ExxonMobil, The ExxonMobil Emblem, the “Interlocking X” Device, Synesstic, SpectraSyn, SpectraSyn Ultra and SpectraSyn Plus are trademarks of Exxon Mobil Corporation. All charts included in the presentation based on ExxonMobil data.


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