A process for the preparation of oligomeric poly alpha-olefins comprises oligomerizing low molecular weight PAO in the presence of an ionic liquid catalyst under oligomerization conditions. The low molecular weight PAOs used as a feed or feed component of the present process are the light olefinic by-product fraction including the dimers and light fractions from the metallocene-catalyzed PAO oligomerization process.
Polyether-containing lubricant base stocks and process for making
申请人:Patil Abhimanyu Onkar
公开号:US20110143983A1
公开(公告)日:2011-06-16
A lubricant base stock is provided. The base stock is a polyether of a plurality of epoxidized olefin monomeric units. The polyether has 30 carbon atoms or more. There is also a process for making a polyether.
BIO-FEEDS BASED HYBRID GROUP V BASE STOCKS AND METHOD OF PRODUCTION THEREOF
申请人:EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
公开号:US20130267450A1
公开(公告)日:2013-10-10
A composition that includes one or more compounds represented by the formula
A(B)
x
wherein A is the residue of an aromatic compound, B is the residue of an unsaturated hydrocarbon ester, and x is a value of 1 or greater. The composition has a viscosity (Kv
100
) from 2 to 40 at 100° C., and a viscosity index (VI) from 100 to 200. The disclosure also relates to a process for producing the composition, a lubricating oil base stock and lubricating oil containing the composition, and a method for improving one or more of solubility and dispersancy of polar additives in a lubricating oil by using as the lubricating oil a formulated oil containing the composition. The lubricating oils containing the composition are advantageous as engine oils that can improve engine fuel efficiency.