US Patent No: 5,012,020

Number of patents in Portfolio can not be more than 2000

Novel VI enhancing compositions and Newtonian lube blends

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Abstract

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A novel composition is disclosed that is particularly useful as a lubricant viscosity index improver. The composition comprises branched 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 temperature with all blends notable by exhibiting Newtonian flow.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MOBIL OIL CORPORATIONNEW YORK, NY5053

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jackson, Andrew Pennington, NJ 99 906
Wu, Margaret M Skillman, NJ 99 1593

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Mobil Oil Corporation (5)
4,665,245 Process for preparing alpha-olefins from light olefins 12 1986
4,827,064 High viscosity index synthetic lubricant compositions 169 1988
4,827,073 Process for manufacturing olefinic oligomers having lubricating properties 127 1988
4,914,254 Fixed bed process for high viscosity index lubricant 52 1988
4,912,277 Process for preparing long chain alkyl aromatic compounds 14 1989
 
Phillips Petroleum Company (3)
4,368,141 Olefin disproportionation and catalyst therefor 25 1981
4,609,769 Olefin conversion 11 1984
4,605,810 Allene or alkyne treatment of olefin conversion catalysts 11 1985
 
SHELL OIL COMPANY (1)
4,368,342 Benzene alkylation process 9 1982

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY (13)
8,535,514 High viscosity metallocene catalyst PAO novel base stock lubricant blends 0 2007
8,394,746 Low sulfur and low metal additive formulations for high performance industrial oils 0 2009
8,476,205 Chromium HVI-PAO bi-modal lubricant compositions 2 2009
8,247,358 HVI-PAO bi-modal lubricant compositions 3 2009
8,716,201 Alkylated naphtylene base stock lubricant formulations 0 2010
8,501,675 High viscosity novel base stock lubricant viscosity blends 0 2010
8,299,007 Base stock lubricant blends 5 2010
8,759,267 Method for improving the fuel efficiency of engine oil compositions for large low and medium speed engines by reducing the traction coefficient 0 2011
8,748,362 Method for improving the fuel efficiency of engine oil compositions for large low and medium speed gas engines by reducing the traction coefficient 0 2011
8,728,999 Method for improving the fuel efficiency of engine oil compositions for large low and medium speed engines by reducing the traction coefficient 0 2011
8,642,523 Method for improving the fuel efficiency of engine oil compositions for large low and medium speed engines by reducing the traction coefficient 0 2011
8,598,103 Method for improving the fuel efficiency of engine oil compositions for large low, medium and high speed engines by reducing the traction coefficient 0 2011
8,834,705 Gear oil compositions 0 2012
 
Mobil Oil Corporation (10)
5,113,030 High viscosity index lubricant compositions 21 1990
5,157,177 VI enhancing compositions and newtonian lube blends 24 1991
5,146,021 VI enhancing compositions and Newtonian lube blends 26 1991
5,105,039 Process for producing lubricant fluids of improved stability 8 1991
5,276,227 C.sub.2 -C.sub.5 olefin oligomer compositions as shear stable viscosity index improvers 25 1992
5,243,114 Oligomerization of alpha-olefins over layered silicate compositions containing pillars of silica and group VIB metal oxide 47 1992
5,270,273 Olefin oligomerization catalyst 11 1993
5,488,191 Hydrocarbon lube and distillate fuel additive 13 1994
5,573,657 Hydrogenation process 20 1994
6,713,438 High performance engine oil 55 1999
 
EXXONMOBIL CHEMICAL PATENTS INC. (7)
8,399,390 HVI-PAO in industrial lubricant and grease compositions 2 2005
8,748,361 Polyalpha-olefin compositions and processes to produce the same 0 2006
8,207,390 Process to produce low viscosity poly-alpha-olefins 2 2006
7,989,670 Process to produce high viscosity fluids 1 2007
8,071,835 Process to produce polyolefins using metallocene catalysts 0 2007
8,513,478 Process to produce polyalphaolefins 0 2007
8,530,712 Process for producing novel synthetic basestocks 0 2010
 
The Lubrizol Corporation (3)
6,962,895 Lubricating compositions 24 1997
5,883,057 Lubricating compositions 11 1997
6,689,723 Sulfide- and polysulfide-containing lubricating oil additive compositions and lubricating compositions containing the same 13 2002
 
CHEMTURA CORPORATION (2)
7,880,047 Polyalphaolefins and processes for forming polyalphaolefins 2 2008
8,389,780 Polyalphaolefins and processes for forming polyalphaolefins 1 2010
 
IDEMITSU KOSAN CO., LTD. (2)
6,414,090 Process for producing a polymer of an .alpha.-olefin and lubricant 41 2001
6,583,239 Process for producing a polymer of an .alpha.-olefin and lubricant 3 2002
 
EXXON CHEMICAL PATENTS INC. (1)
5,558,802 Multigrade crankcase lubricants with low temperature pumpability and low volatility 16 1995