The high viscosity HY116 PAO products are hydrogenated olefin oligomers manufactured by the catalytic polymerization of linear alphaolefins. They have well-defined wax-free isoparaffinic structures that contain relatively unbranched side chains of predetermined chain length.
The high viscosity HY116 PAO products feature numerous performance advantages compared to mineral oils and polyisobutenes. These advantages include better low temperature properties (pour point and viscosity), low volatility, and improved thermal stability. Because of their excellent response to antioxidant additives, HY116 PAO products can be formulated to provide very high oxidation resistance. HY116 PAO products also have high viscosity indices, which translate into improved flow at low temperatures and increased film thickness at high temperatures. In addition, high viscosity HY116 PAO products are shear stable, hydrolytically stable, have good compatibility with mineral oils, and are frequently combined with other synthetic basestocks (e.g. esters or alkylated naphtha-lenes) to improve solvency and deposit control. All of these features make the high viscosity HY116 PAO products attractive blend components for increasing basestock viscosity and upgrading basestock quality.