Overview
Polyalkylene glycols (PAGs) are used as synthetic lubricants in many diverse applications where petroleum oil based products do not provide the desired performance. PAG characteristics that lead to their improved performance over petroleum based products are:

  • lower pour point
  • higher viscosity index
  • lower tendency of varnish or coke formation
  • increased solvency
  • wider range of solubilities, including water solubility
  • lower vapor pressure and ash content

PAGs are often formulated with additives to improve oxidation stability, extreme pressure loading, and corrosion inhibition.

Products
The following products can be used as components or base stocks in synthetic lubricants. Although each product has unique properties based on molecular weight and the monomer used, they all share some common properties.

Polypropylene Glycols Polyglycol Copolymers
P425 Polyglycol 15-200
P1200
P2000
P4000


Dow also offers a wide range of UCON™ Lubricants and lubricant base stocks. These fluids and lubricants offer several advantages over petroleum products.

Specific Applications
PPGs display minimal tendency toward the formation of varnish and coke deposits at high temperatures and are used as carriers for solid lubricants, such as graphite and molybdenum disulfide. Formulated with thickeners, PPGs are used as greases in high temperature applications where mineral oil formulations would result in coke-type deposits.

PPGs are used in synthetic lubricants including:

  • hydraulic fluid lubricant
  • gear lubricant
  • calender lubricant
  • textile processing
  • LDPE hyper-compressor
  • two-stroke engine

Also see UCON™ Fluids. CARBOWAX™ PEGs and MPEGs are also used in lubricant applications.


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