Hydrocarbon distillate fuels containing novel additive

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5637784
SERIAL NO

08536724

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ATTORNEY / AGENT: (SPONSORED)

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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, NY575

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chu, Alice S Spotswood, NJ 5 79
Jackson, Andrew Pennington, NJ 81 1238
Wu, Margaret M Skillman, NJ 91 1900

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SUN REFINING AND MARKETING COMPANY (1)
* 4827023 Process for the selective formation of dialkyl succinates 1 1987
 
Mobil Oil Corporation (5)
* 4827064 High viscosity index synthetic lubricant compositions 200 1988
* 5146021 VI enhancing compositions and Newtonian lube blends 27 1991
* 5157177 VI enhancing compositions and newtonian lube blends 25 1991
* 5264642 Molecular weight control of olefin oligomers 40 1992
* 5243114 Oligomerization of alpha-olefins over layered silicate compositions containing pillars of silica and group VIB metal oxide 53 1992
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2008/0083,648 Heavy lube oil from Fischer-Tropsch wax 1 2007
 
Primrose Oil Company (1)
* 6586374 Engineered synthetic engine oil and method of use 2 2002
 
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY (10)
7132042 Production of fuels and lube oils from fischer-tropsch wax 3 2002
6846778 Synthetic isoparaffinic premium heavy lubricant base stock 21 2002
* 2004/0067,856 Synthetic isoparaffinic premium heavy lubricant base stock 10 2002
* 2004/0065,584 Heavy lube oil from fischer- tropsch wax 8 2002
* 2004/0065,588 Production of fuels and lube oils from fischer-tropsch wax 14 2002
7344631 Oxygenate treatment of dewaxing catalyst for greater yield of dewaxed product 2 2003
7241375 Heavy hydrocarbon composition with utility as a heavy lubricant base stock 4 2003
7201838 Oxygenate treatment of dewaxing catalyst for greater yield of dewaxed product 3 2003
* 2005/0150,815 Heavy hydrocarbon composition with utility as a heavy lubricant base stock 9 2003
7670983 Oxygenate treatment of dewaxing catalyst for greater yield of dewaxed product 0 2008
 
CHEMTURA CORPORATION (2)
7880047 Polyalphaolefins and processes for forming polyalphaolefins 21 2008
* 2009/0281,360 POLYALPHAOLEFINS AND PROCESSES FOR FORMING POLYALPHAOLEFINS 20 2008
 
CHEVRON U.S.A. INC. (2)
* 6700027 Process for the oligomerization of olefins in Fischer-Tropsch condensate using chromium catalyst and high temperature 4 2002
* 2004/0029,984 PROCESS FOR THE OLIGOMERIZATION OF OLEFINS IN FISCHER-TROPSCH CONDENSATE USING CHROMIUM CATALYST AND HIGH TEMPERATURE 4 2002
* Cited By Examiner