US Patent No: 5,146,021

Number of patents in Portfolio can not be more than 2000

VI enhancing compositions and Newtonian lube blends

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Abstract

A novel composition is disclosed that is particularly useful as a lubricant viscosity index improver. The composition comprises branched C.sub.30 -C.sub.10000 hydrocarbons that have a branch ratio of less than 0.19 and viscosity at 100.degree. C. between 725 cS and 15,000 cS. The novel compositions comprise the product of the oligomerization of C.sub.6 to C.sub.20 alpha-olefin feedstock, or mixtures thereof, under oligomerization conditions at a temperature between -20.degree. C. and +90.degree. C. in contact with a reduced valence state Group VIB metal catalyst on porous support. The compositions have viscosities at 100.degree. C. between 725 cS and 15,000 cS. Using the foregoing compositions in admixture with mineral oil and synthetic lubricants provides novel lubricant blends that show an elevated viscosity index. The mixtures also show an increased stability to shear stress at high temperture with all blends notable by exhibiting Newtonian flow.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MOBIL OIL CORPORATIONNEW YORK, NY5053

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chu, Alice S Spotswood, NJ 5 53
Jackson, Andrew Pennington, NJ 83 632
Pelrine, Bruce P Ewing, NJ 40 615
Wu, Margaret M Skillman, NJ 90 1203

Cited Art

Patent Info (Count) # Cites Year
 
MOBIL OIL CORPORATION (5)
4,827,064 High viscosity index synthetic lubricant compositions 141 1988
4,827,073 Process for manufacturing olefinic oligomers having lubricating properties 102 1988
4,914,254 Fixed bed process for high viscosity index lubricant 33 1988
5,012,020 Novel VI enhancing compositions and Newtonian lube blends 25 1989
4,912,277 Process for preparing long chain alkyl aromatic compounds 14 1989
 
PHILLIPS PETROLEUM COMPANY (2)
4,609,769 Olefin conversion 10 1984
4,605,810 Allene or alkyne treatment of olefin conversion catalysts 10 1985
 
SHELL OIL COMPANY (1)
4,368,342 Benzene alkylation process 9 1982

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY (4)
6,992,049 Lubricating oil compositions 14 2003
8,394,746 Low sulfur and low metal additive formulations for high performance industrial oils 0 2009
8,247,358 HVI-PAO bi-modal lubricant compositions 0 2009
8,299,007 Base stock lubricant blends 0 2010
 
MOBIL OIL CORPORATION (4)
5,276,227 C.sub.2 -C.sub.5 olefin oligomer compositions as shear stable viscosity index improvers 15 1992
5,488,191 Hydrocarbon lube and distillate fuel additive 13 1994
5,637,784 Hydrocarbon distillate fuels containing novel additive 9 1995
6,713,438 High performance engine oil 26 1999
 
THE LUBRIZOL CORPORATION (3)
6,962,895 Lubricating compositions 17 1997
5,883,057 Lubricating compositions 10 1997
6,689,723 Sulfide- and polysulfide-containing lubricating oil additive compositions and lubricating compositions containing the same 9 2002
 
EXXONMOBIL CHEMICAL PATENTS INC. (2)
7,151,073 Mesoporous catalyst support, a catalyst system, and method of making and using same for olefin polymerization 1 2004
7,268,195 Mesoporous catalyst support, a catalyst system, and method of making and using same for olefin polymerization 1 2006
 
CONDEA AUGUSTA S.P.A. (1)
5,714,656 Bases for lubricating oils and process for their preparation 0 1996
 
EXXON CHEMICAL PATENTS INC. (1)
5,558,802 Multigrade crankcase lubricants with low temperature pumpability and low volatility 16 1995