Exxonmobil Chemical Patents Inc.

Exxonmobil Research and Engineering Company

Exxon Chemical Patents, Inc.

Exxonmobil Technology and Engineering Company

Charles James Ruff

Patrick Brant

John Robert Hagadorn

Mark Paul Hagemeister

Phillip Thomas Matsunaga

Kevin Bruce Stavens

Craig Janzen Emett

Matthew William Holtcamp

Donna Jean Crowther

Mun Fu Tse

Douglas Edward Deckman

Bruce Alan Harrington

Chon-Yie Lin

Kevin John Kelly

Bruce Allan Harrington

Richard Wayne Martin

Peijun Jiang

Jo Ann M Canich

George Rodriguez

Antonios K Doufas

Kevin Richard Squire

Ian C Stewart

Cesar Alberto Garcia-Franco

Derek Wade Thurman

Cynthia Ann Mitchell

Jeanne Marie MacDonald

Jerome Sarrazin

Daniel L Bilbao

Carlos U DeGracia

Margaret M Wu

Aspy Keki Mehta

Armenag Hagop Dekmezian

Richard B Pannell

Jo Ann Canich

Man Kit Ng

Natalie Ann Merrill

William Michael Ferry

Wenning W Han

Jacqueline A Lovell

Carlos R Lopez-Barron

Chon Yie Lin

Renuka N Ganesh

Pramod Jayant Nandapurkar

JoAnn M Canich

Rahul Rameshrao Kulkarni

Kevin J Kelly

Rahul Ravindra Kulkami

William Michael Farry

Cohn-Yie Lin

Richard W Martin

Cynthia A Mitchell

Rahul Ravindra Kulkarni

This invention relates to methods to prepare and compositions pertaining to branched ethylene-propylene copolymers that include at least 50% ethylene content by weight as determined by FTIR; a g'of less than 0.95; a Mof 125,000 to 300,000; a methylene sequence length of 6 or greater as determined byC NMR, wherein the percentage of sequences of the length of 6 or greater is more than 32%; and can have greater than 50% vinyl chain end functionality.

Ethylene-propylene copolymeric compositions with long methylene sequence lengths

This invention relates in one aspect to propylene polymers comprising propylene, said polymers having a melt flow rate (MFR, ASTM 1238, 230&#xb0; C., 2.16 kg) of 10 dg/min to 25 dg/min; a Dimensionless Stress Ratio/Loss Tangent Index Rat 190&#xb0; C. from 1.5 to 28; an average meso run length determined byC NMR of at least 70 or higher; and an MFR MFR Ratio of at least 1.0 and optionally, a Loss Tangent, tan &#x3b4;, at an angular frequency of 0.1 rad/s at 190&#xb0; C. from 14 to 100. The inventive propylene polymer compositions are useful in in molded articles and non-woven fibers and fabrics.

Propylene polymers

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

Poly alpha olefins (PAOs) are characterized by very low viscosity and excellent Noack volatility. A preferred process for synthesizing said PAOs involves first oligomerizing low molecular weight linear alpha olefins in the presence of a single site catalyst at high temperatures without adding hydrogen and then subsequently oligomerizing at least a portion of the product from the first step in the presence of an oligomerization catalyst.

This invention relates to propylene polymers comprising at least 50 mol % propylene, said polymers having: a) a melt flow rate (MFR, ASTM 1238, 230&#xb0; C., 2.16 kg) of 10 dg/min to 25 dg/min; b) a Dimensionless Stress Ratio/Loss Tangent Index Rat 190&#xb0; C. from 1.5 to 28; c) an onset temperature of crystallization under flow, T(as determined by SAOS rheology, 190&#xb0; C., 1&#xb0; C./min, where said polymer has 0 wt % nucleating agent present), of at least 131&#xb0; C.; d) an average meso run length determined byC NMR of at least 90 or higher; and e) optionally, a loss tangent, tan &#x3b4;, (defined by Eq. (2)) at an angular frequency of 0.1 rad/s at 190&#xb0; C. from 14 to 70.

This invention is directed to a two-step process for the preparation of improved poly alpha olefins wherein the first step involves oligomerizing low molecular weight linear alpha olefins in the presence of a single site catalyst and the second step involves oligomerization of at least a portion of the product from the first step in the presence of an oligomerization catalyst. The dimer product from the first oligomerization is characterized by a tri-substituted vinylene olefin content of at least 25 wt %.

Process to produce improved poly alpha olefin compositions

This invention relates to the reaction product(s) of a polyalkylhydrosiloxane and a vinyl terminated macromonomer (VTM).

Hydrosilation of vinyl-terminated macromonomers

This invention is directed to passenger car engine oil compositions comprising in admixture 60 wt % to 90 wt % of a first base oil component, based on the total weight of the composition, the first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100&#xb0; C. of from 3.2 cSt to 3.8 cSt; 0.1 wt % to 20 wt % of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; and at least 0.75 wt % viscosity index improver, on a solid polymer basis.

High efficiency engine oil compositions

This invention is directed to ultra-low viscosity passenger car engine oil compositions with a kinematic viscosity at 100&#xb0; C. of from 4 to 6 cSt, and comprising in admixture 60 wt % to 90 wt % of a first base oil component, based on the total weight of the composition, the first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100&#xb0; C. of from 3.2 cSt to 3.8 cSt; and 0.1 wt % to 20 wt % of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; wherein the composition comprises from 0 wt % to less than 0.25 wt % viscosity index improver, on a solid polymer basis.

Low viscosity engine oil compositions

This invention is directed to lubricating compositions comprising a first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100&#xb0; C. of from 3.2 cSt to 3.8 cSt and obtained by a process comprising: (a) contacting a catalyst, an activator, and a monomer in a first reactor to obtain a first reactor effluent, the effluent comprising a dimer product, a trimer product, and optionally a higher oligomer product, (b) feeding at least a portion of the dimer product to a second reactor, (c) contacting said dimer product with a second catalyst, a second activator, and optionally a second monomer in the second reactor, (d) obtaining a second reactor effluent, the effluent comprising at least a trimer product, and (e) hydrogenating at least the trimer product of the second reactor effluent.

Lubricating compositions

This invention relates to in-reactor polymer blends comprising at least 60 mole % of propylene and from 0.01 to 10 mole % of at least one diene selected from the group of Cto C&#x3b1;,&#x3c9;-diene, norbornadiene, vinyl norbornene and mixtures thereof with the balance being ethylene. The blend comprises first and second polymers having different crystallinities and or different Tg's.

In-reactor polymer blends

This invention relates to a composition comprising a multiblock polyolefin represented by the formula: PO&#x2014;C(R)(R)&#x2014;C(R)&#x2550;C(R)&#x2014;C(R)(R)&#x2014;PO*, or isomers thereof, wherein R, R, R, R, R, and R, are each independently a substituted or unsubstituted Cthrough Chydrocarbyl group or a hydrogen; PO and PO* are polyolefins; PO and PO* are each independently a substituted or unsubstituted hydrocarbyl group having 9 to 4000 carbon atoms, provided that at least one of PO and PO* are Cor greater, said polyolefin having: 1) an internal unsaturation as shown by theC NMR peak at between about 128 and about 132 ppm; 2) an Mn ratio 'Z'=0.1 to 10 where Z is the Mn (as determined byC NMR) divided by Mn (as determined according to Gel Permeation Chromotography using polystyrene standards); and 3) optionally, from 0.3(J) and 0.75(J) internal unsaturations per 1000 carbons as determined byH NMR spectroscopy, where J is the number of reactive groups per 1000 carbons for the mixture of vinyl terminated polyolefins that become PO and PO*, before they are coupled by an alkene metathesis catalyst.

Diblock copolymers prepared by cross metathesis

This invention relates to a vinyl terminated higher olefin copolymer having an Mn of 300 g/mol or more (measured byH NMR) comprising: (i) from about 20 to about 99.9 mol % of at least one Cto Chigher olefin monomer; and (ii) from about 0.1 to about 80 mol % of propylene; wherein the higher olefin copolymer has at least 40% allyl chain ends. The copolymer may also have an isobutyl chain end to allyl chain end ratio of less than 0.7:1 and/or an allyl chain end to vinylidene chain end ratio of greater than 2:1.

Vinyl terminated higher olefin copolymers and methods to produce thereof

This invention relates to higher olefin vinyl terminated polymers having an Mn of at least 200 g/mol (measured byH NMR) including of one or more Cto Chigher olefin derived units, where the higher olefin vinyl terminated polymer comprises substantially no propylene derived units; and wherein the higher olefin polymer has at least 5% allyl chain ends and processes for the production thereof. These vinyl terminated higher olefin polymers may optionally include ethylene derived units.

Vinyl terminated higher olefin polymers and methods to produce thereof

Growing community of inventors

Houston, TX, United States of America

Charles James Ruff