US Patent No: 4,967,029

Number of patents in Portfolio can not be more than 2000

Liquid lubricants from alpha-olefin and styrene copolymers

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Abstract

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Alpha-olefins such as 1-decene are copolymerized with vinylaromatic monomers, especially styrene or the alkylstyrenes, to produce liquid lubricant oligomers having a broad range of viscosities, high viscosity index(VI), improved thermal stability and additive solubility characteristics. The lubricant oligomers are random copolymers containing recurring units of 1-alkene and vinyl aromatic monomer in mole ratios between 2:1 and 500:1, but preferably between 5:1 and 100:1 and more preferably from about 10:1 to 50:1. The recurring 1-alkene units of the copolymer have a branch ratio of less than 0.19, indicative of a poly 1-alkene segment of the copolymer chain or backbone that is essentially linear. The copolymerization catalyst is a reduced Group VIB metal catalyst on porous support, preferably reduced chromium oxide on a 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
Wu, Margaret M Skillman, NJ 103 1660

Cited Art Landscape

Patent Info (Count) # Cites Year
 
STAMICARBON B.V. (1)
* 4,504,592 Polymerization catalyst for the preparation of ethylene polymer 5 1983
 
Phillips Petroleum Company (1)
* 4,681,866 Polymerization catalyst, method of making and use therefor 17 1986
 
National Starch and Chemical Corporation (1)
* 4,604,491 Synthetic oils 47 1984
 
Mobil Oil Corporation (2)
* 4,827,064 High viscosity index synthetic lubricant compositions 173 1988
* 4,827,073 Process for manufacturing olefinic oligomers having lubricating properties 129 1988
 
Nippon Oil Co., Ltd. (1)
* 4,714,794 Synthetic oils 27 1987
 
Du Pont Canada Inc. (1)
* 4,547,473 Process for the preparation of polymers of alpha-olefins at high temperatures 9 1983
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
H1407 Synthetic lubricant base stocks by co-reaction of vinylcyclohexene and long-chain olefins 0 1990
 
TEXACO CHEMICAL COMPANY (1)
H001407 Synthetic lubricant base stocks by co-reaction of vinylcyclohexene and long-chain olefins 0 1990
 
HUNTSMAN PETROCHEMCIAL CORPORATION (3)
* 5,169,550 Synthetic lubricant base stocks having an improved viscosity 3 1990
* 5,202,040 Synthetic lubricant base stocks by co-reaction of olefins and anisole compounds 17 1990
* 5,180,866 Process for preparing synthetic lubricant base stocks having improved viscosity from vinylcyclohexene and long-chain olefins 1 1991
 
BASELL POLYOLEFINE GMBH (1)
6,608,151 Method for producing supported chrome catalysts and the use thereof for the polymerization of olefins 2 2002
 
Mobil Oil Corporation (1)
* 5,602,086 Lubricant compositions of polyalphaolefin and alkylated aromatic fluids 44 1996
 
EXXONMOBIL OIL CORPORATION (1)
6,872,692 Synthetic hydrocarbon fluid 1 2002
 
The Procter & Gamble Company (7)
6,221,817 Conditioning shampoo composition 16 1996
* 6,007,802 Conditioning shampoo composition 7 1996
* 5,935,561 Conditioning shampoo compositions containing select hair conditioning agents 31 1996
* 5,932,202 Conditioning shampoo composition 10 1996
* 5,932,203 Conditioning shampoo compositions containing select hair conditioning esters 21 1996
* 5,756,436 Conditioning shampoo compositions containing select cationic conditioning polymers 42 1996
6,627,184 Conditioning shampoo compositions containing polyalphaolefin conditioner 6 2003
 
HUNTSMAN CORPORATION (2)
* 5,030,791 Process for co-oligomerizing 1,3-di-isopropenyl benzene and alpha-olefins to prepare synthetic lubricant base stocks having improved properties 3 1990
* 5,171,904 Synthetic lubricant base stocks having an improved pour point 3 1990
 
MITSUI CHEMICALS, INC. (1)
* 6,214,779 Lubricating oil or lubricating oil composition and fuel oil composition 2 1998
* Cited By Examiner