C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
253/128, 260/710
C07C 2/10 (2006.01) C07C 9/22 (2006.01) C10G 50/02 (2006.01) C10M 105/04 (2006.01) C10M 107/10 (2006.01)
Patent
CA 1325020
OLEFINIC OLIGOMERS HAVING LUBRICATING PROPERTIES AND PROCESS OF MAKING SUCH OLIGOMERS ABSTRACT Novel lubricant compositions comprising polyalpha-olefins are disclosed having high viscosity indices with low pour point. The compositions are characterized by a uniform molecular structure with low branch ratios. The invention describes a liquid lubricant composition comprising C30-C1300 hydrocarbons, said composition having a branch ratio of less than 0.19, weight average molecular weight between 300 and 45,000, number average molecular weight between 300 and 18,000, molecular weight distribution between 1 and 5 and pour point below -15°C. 1-decene trimer comprising 9-methyl, 11-octylheneicosane and 11-octyldocosane is disclosed. The lubricant compositions are produced by contacting said alpha olefin with a supported solid reduced group VIB (e.g., chromium) catalyst under oligomerizaeion conditions at a temperature of about 90 to 250°C to produce liquid lubricant hydrocarbon. The hydrogenated lubricant range hydrocarbon product has a viscosity index of about 130 to 280 and a viscosity up to about 750 mm2/s(cs). The process is particularly useful where the starting alpha olefin consists essentially of olefinic hydrocarbons having 8 to 14 carbon atoms or mixtures thereof, wherein the process conditions include a reaction temperature of about 100 to 180°C; and wherein the support catalyst includes porous inert silica.
598382
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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