Mobil Oil Corporation

Exxonmobil Chemical Patents Inc.

Exxonmobil Research and Engineering Company

Margaret M Wu

Suzzy C Ho

Norman Yang

Mark Paul Hagemeister

James Thomas Carey

Peijun Jiang

Abhimanyu Onkar Patil

Catherine S Chen

Bruce P Pelrine

Thomas E Nowlin

John F Walzer, Jr

Henry H Ashjian

Jose G Santiesteban

Clarence D Chang

Jo Ann M Canich

Scott S Han

Kun Wang

David Lawrence Stern

Rene B LaPierre

Satish Bodige

David Joseph Baillargeon

Andrew G Horodysky

Tsoung Y Yan

Thomas F Degnan

John Scott Buchanan

Stuart S Shih

Stephen Zushma

Darrell D Whitehurst

Liehpao O Farng

Simon Christopher Weston

Ivy Dawn Johnson

Warren W Kaeding

Mun Fu Tse

Allen David Godwin

Shifang Luke Luo

Ramzi Yanni Saleh

Lewis B Young

Joan M Kaminski

Lisa Saunders Baugh

Garry W Kirker

Jo Ann Marie Canich

Wen Li

Andrew Jackson

Steven Paul Rucker

Dong-ming Shen

Angela Stefana Galiano-Roth

Shakeel H Tirmizi

Yusheng Xiong

Alice S Chu

J Scott Buchanan

Frederick Y Lo

Richard T Spissell

Anura Patil

Kuangnan Qian

Catalina L Coker

Phil Surana

Steven Edward Donnachie

Walter David Vann

Jon Edmond Randolph Stanat

Suzzy Chen Hsi Ho

Nancy P Forbus

Anatoly Ilich Kramer

Willie Allan Givens, Jr

Heather M Haigh

John M Klosek

Gordon H Lee

Philip Trotto

Karla Schall Colle

Evelyn N Drake

Charles Lambert Baker, Jr

Bruce Alan Harrington

Michael E Landis

Phillip Thomas Matsunaga

Man Kit Ng

Alan Anthony Galuska

Kevin Bruce Stavens

Charles James Ruff

Brent A Aufdembrink

Sandeep Singh Dhingra

Hye Kyung C Timken

Wenning W Han

James William Gleeson

Craig Janzen Emett

Harold S Chung

Liwen Wei

Pramod Jayant Nandapurkar

Martin N Webster

David Alan Blain

George T Burress

Samuel C Bainbridge

Ernestine Williams Hill

Chia Shian Chee

L Oscar Farng

Richard N Nipe

David K Prendergast

L Brewster Young

Andrea B Wardlow

JoAnn M Canich

Frederick Yip-Kwai Lo

Kyle D Lawrence

This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids

Lubricants from mixed alpha-olefin feeds

This invention is directed to a poly alpha olefin (PAO) composition formed in a first oligomerization, wherein at least portions of the PAO have properties that make them highly desirable for a subsequent oligomerization. A preferred process for producing this PAO uses a single site catalyst at high temperatures without adding hydrogen to produce a low viscosity PAO with excellent Noack volatility at high conversion rates. This PAO comprises a dimer product with at least 25 wt % tri-substituted vinylene olefins wherein said dimer product is highly desirable as a feedstock for a subsequent oligomerization. This PAO also comprises trimer and optionally higher oligomer products with outstanding properties that make these products useful as lubricant basestocks following hydrogenation.

Poly alpha olefin compositions

This disclosure relates to a liquid syndiotactic polyalphaolefin, sPAO, comprising one or more Cto Cmonomers, said sPAO having: a) an rr triad content of 5 to 50% as measured byC NMR; b) an mr triad content of 25 to 60% as measured byC NMR, where the mr to mm triad ratio is at least 1.0; c) a pour point of Z&#xb0; C. or less, where Z=0.0648X&#x2212;51.2, where X=kinematic viscosity at 100&#xb0; C. as reported in centistokes (cSt); d) a kinematic viscosity at 100&#xb0; C. of 100 cSt or more (alternatively 200 cSt or more); e) a ratio of mr triads to rr triad (as determined byC NMR) of less than 9; f) a ratio of vinylidene to 1,2-disubstituted olefins (as determined byH NMR) of less than 8; g) a viscosity index of 120 or more; and h) an Mn of 40,000 or less. This disclosure further relates to processes to make and use sPAOs, including those having any combination of characterics a) to h).

Process for producing novel synthetic basestocks

This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids.

The invention is directed to a process for the preparation of lubricant base stocks by contacting alphaolefin feedstocks with single-site metallocene catalysts and recycling unconverted monomers, characterized by a purge step in the recycle.

Utilization of linear alpha olefins in the production of metallocene catalyzed poly-alpha olefins

A low viscosity poly(apha-olefin) (PAO) is produced by contacting one or more C3 to C24 alpha-olefins with an unbridged, substituted bis cyclopentadienyl transition metal compound, a non-coordinating anion activator, and an alkyl-aluminum compound. The molar ratio of transition metal compound to activator is 10:1 to 0.1:1, and the molar ratio of alkyl aluminum compound to transition metal compound is 1:4 to 4000:1. The transition metal compound has either (a) at least one non-isoolefin substitution on both cyclopentadienyl rings, or (b) at least two substitutions on at least one cyclopentadienyl ring. The PAO is comprised of at least 50 mole % of C3 to C24 alpha-olefins and has a kinematic viscosity at 100&#xb0; C. of 20 cSt or less.

Low viscosity poly-alpha-olefins

The invention is directed to a process for the preparation of high viscosity lubricant base stocks by contacting alphaolefin feedstocks with single-site metallocene catalysts in a mixed flow or continuous stirred tank reactors.

Production of shear-stable high viscosity PAO

This invention relates to a hydroxyaromatic functionalized polyalpha-olefin comprising the product of the combination of:

Hydroxyaromatic functionalized polyalpha-olefins

Provided are processes for making one or more unsaturated oligomeric acids and one or more saturated hydrocarbons. In one form, a process for making one or more saturated hydrocarbons includes oligomerizing one or more unsaturated carboxylic acids having from 4 to 38 carbon atoms in the presence of a molecular sieve catalyst to form one or more unsaturated oligomeric acids including less than 90% by weight of cyclic oligomers, and hydrogenating the one or more unsaturated oligomeric acids via contact with hydrogen in the presence of a hydrogenation catalyst to form one or more saturated hydrocarbons. The oligomerizing of unsaturated fatty acids is from renewable biological sources to form dimer acids. The one or more saturated hydrocarbons are useful as lubricant base oils.

Process for making saturated hydrocarbons and the use thereof

A novel lubricant composition is disclosed. In one embodiment the lubricant composition comprises in admixture: a first base stock component comprising one or more base stocks each having a viscosity of at least 40 cSt, Kv100&#xb0; C. and a molecular weight distribution (MWD) as a function of viscosity at least 10 percent less than algorithm: MWD=0.2223+1.0232*log (Kv at 100&#xb0; C. in cSt); and a second base stock component comprising at least one Poly-Alpha-Olefin (PAO) base stock and at least one Group III base stock, each having a viscosity less than 10 cSt, Kv100&#xb0; C.

Gear oil compositions

A process for the preparation of oligomeric poly alpha-olefins includes oligomerizing low molecular weight PAO oligomer in the presence of a Lewis acid catalyst such as promoted aluminum trichloride or boron trifluoride under oligomerization conditions. The low molecular weight PAO oligomers used as a feed or feed component of the present process are the light olefinic by-product fractions including the dimers and light fractions from the metallocene-catalyzed PAO oligomerization process which are characterized by a molecular weight of 150 to 600 and a terminal olefin (vinylidene) content of at least 25%.

Process for synthetic lubricant production

A novel lubricant composition is disclosed. In one embodiment the lubricant composition comprises in admixture: a first base stock component comprising one or more base stocks each having a viscosity of at least 40 cSt, Kv100&#xb0; C. and a molecular weight distribution (MWD) as a function of viscosity at least 10 percent less than algorithm: MWD=0.2223+1.0232*log (Kv at 100&#xb0; C. in cSt); and a second base stock component comprising one or more base stocks each having a viscosity less than 10 cSt, Kv100&#xb0; C.

A process for converting feedstock triglycerides to lube basestocks. The process has the steps of (a) metathesizing the feedstock triglycerides with ethylene in the presence of a metathesis catalyst to form alpha olefins and medium-chain triglycerides and (b) hydroisomerizing the medium-chain triglycerides in the presence of a hydroisomerization catalyst and hydrogen to form methyl-branched triglycerides. The alpha olefins may be oligomerized in the presence of an oligomerization catalyst to form poly(alpha olefins).

Process for making basestocks from renewable feedstocks

This invention relates to a polyalpha-olefin (and hydrogenated analogs thereof) comprising more than 50 mole % of one or more C5 to C24 alpha-olefin monomers where the polyalpha-olefin has: a) 40 mole % or more of mm triads, b) a Bromine number of Y or greater, where Y is equal to 89.92*(V)'&#xb0;5863, where V is the Kinematic Viscosity of the polyalpha-olefin measured at 100&#xb0; C. in cSt, and c) 1,2 disubstituted olefins present at 7 mole % or more, preferably having Z mole % or more of units represented by the formula: where j, k and m are each, independently, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22, n is an integer from 1 to 350, and where Z=8.420*Log(V)&#x2212;4.048, where V is the kinematic viscosity of the polyalpha-olefin measured at 1000 C in cSt This invention also relates to process to produce such polyalpha-olefins. 

Polyalpha-olefin compositions and processes to produce the same

Growing community of inventors

Skillman, NJ, United States of America

Margaret M Wu