US Patent No: 5,637,784

Number of patents in Portfolio can not be more than 2000

Hydrocarbon distillate fuels containing novel additive

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Abstract

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A hydrocarbon oligomer and a process for its production is disclosed that is useful as a pour point depressant and as a combination pour point depressant and viscosity index improver for mineral oil or synthetic oil. The oligomer is also useful in modifying wax crystal formation at low temperature when added to distillate fuels. The oligomer is a near linear copolymer of a mixture of ethylene and C.sub.3 -C.sub.28 1-alkenes, or only 1-alkenes, wherein a large proportion of the pendant alkyl groups of the recurring 1-alkene monomer units contain between 14 and 22 carbon atoms. The oligomer is produced by polymerization of mixed 1-alkenes with reduced chromium oxide catalyst on silica support.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MOBIL OIL CORPORATIONNEW YORK, NY579

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chu, Alice S Spotswood, NJ 5 74
Jackson, Andrew Pennington, NJ 99 933
Wu, Margaret M Skillman, NJ 100 1612

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Mobil Oil Corporation (5)
* 4,827,064 High viscosity index synthetic lubricant compositions 171 1988
* 5,146,021 VI enhancing compositions and Newtonian lube blends 26 1991
* 5,157,177 VI enhancing compositions and newtonian lube blends 24 1991
* 5,264,642 Molecular weight control of olefin oligomers 28 1992
* 5,243,114 Oligomerization of alpha-olefins over layered silicate compositions containing pillars of silica and group VIB metal oxide 47 1992
 
SUN REFINING AND MARKETING COMPANY (1)
* 4,827,023 Process for the selective formation of dialkyl succinates 1 1987
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY (6)
7,132,042 Production of fuels and lube oils from fischer-tropsch wax 1 2002
6,846,778 Synthetic isoparaffinic premium heavy lubricant base stock 16 2002
7,344,631 Oxygenate treatment of dewaxing catalyst for greater yield of dewaxed product 2 2003
7,241,375 Heavy hydrocarbon composition with utility as a heavy lubricant base stock 4 2003
7,201,838 Oxygenate treatment of dewaxing catalyst for greater yield of dewaxed product 3 2003
7,670,983 Oxygenate treatment of dewaxing catalyst for greater yield of dewaxed product 0 2008
 
CHEMTURA CORPORATION (1)
7,880,047 Polyalphaolefins and processes for forming polyalphaolefins 2 2008
 
CHEVRON U.S.A. INC. (1)
* 6,700,027 Process for the oligomerization of olefins in Fischer-Tropsch condensate using chromium catalyst and high temperature 3 2002
 
Primrose Oil Company (1)
* 6,586,374 Engineered synthetic engine oil and method of use 2 2002
* Cited By Examiner