Exxonmobil Chemical Patents Inc.

Exxonmobil Research and Engineering Company

Other

Exxon Chemical Patents, Inc.

Exxonmobil Technology and Engineering Company

Chon-Yie Lin

Bryan Robert Chapman

Wen Li

Aspy Keki Mehta

Bruce R Lundmark

David John Lohse

Sandra Denise Schregenberger

Michael Brian Kelly

Michael Chia-Chao Chen

Henry Wu-Hsiang Yang

Rajan K Chudgar

Robert J Wittenbrink

Mark Paul Hagemeister

Douglas Edward Deckman

Prasadarao Meka

Phillip Thomas Matsunaga

Christopher Garland Bauch

Chia Yung Cheng

Norman Yang

Kevin Bruce Stavens

Manika Varma-Nair

Charles James Ruff

James Norris Coffey

Kevin John Kelly

Craig Janzen Emett

Bruce Allan Harrington

Todd S Edwards

Petra Eiselt

Jeffrey Theodore Zudock

Richard Wayne Martin

Galina Ourieva

Anthony Nicholas Speca

Main Chang

Weiqing Weng

Armenag Hagop Dekmezian

Palanisamy Arjunan

Pawan Kumar Agarwal

Galen Charles Richeson

James John Mcalpin

Kelly Tormaschy

Mun Fu Tse

Bruce Alan Harrington

Henry W Yang

Pramod Jayant Nandapurkar

Olivier Jean Georjon

David B Dunaway

Michael C Chen

Christopher R Davey

Blu E Englehorn

Bernard Louis Bossaert

Stephen Francis Broadbent

Susan Chia-Yu Yeh

Michael C-c Chen

William M Ferry

Jeffery Zudock

A process of polymerizing olefins comprising combining propylene with a polymerization catalyst, hydrogen, and at least one external electron donor, such as at least one amino-silane donor, to form polypropylene in a first polymerization medium under solution or slurry conditions at or below the bubble point; removing hydrogen from the first polymerization medium and providing a first olefin/polyolefin separation step to form a second polymerization medium; transferring the second polymerization medium to a gas phase reactor and further combining with ethylene; obtaining a propylene-based impact copolymer. The propylene-based impact copolymer desirably has a melt flow rate of at least 60 g/10 min and is useful in automotive components.

Propylene-based impact copolymers and process and apparatus for production

A propylene-based impact copolymer having a high gloss and suitable for appliance components comprising a polypropylene homopolymer and within a range of from 6 wt % to 20 wt % of propylene copolymer based on the weight of the impact copolymer, wherein the copolymer comprises from 20 wt % to 44 wt % ethylene, and/or C4 to C10 &#x3b1;-olefin derived units and the remainder propylene-derived units based on the weight of the propylene copolymer, the impact copolymer having a melt flow rate (230&#xb0; C./2.16 kg) within a range of from 10 g/10 min to 50 g/10 min.

Low comonomer propylene-based impact copolymers

A propylene-based impact copolymer (ICP) and composition including the ICP, the ICP comprising a polypropylene homopolymer and within the range of from 10 wt % to 45 wt % of propylene copolymer based on the weight of the ICP, wherein the copolymer comprises from 20 wt % to 44 wt % ethylene, 1-butene, 1-hexene and/or 1-octene derived units and from 80 to 60 wt % propylene-derived units based on the weight of the propylene copolymer, the propylene-based impact copolymer having a Melt Flow Rate (230&#xb0; C./2.16 kg) within the range of from 10 g/10 mm to 50 g/10 mm and an Elongation at Break of greater than 70%.

Propylene-based impact copolymers

A propylene-based impact copolymer (ICP) and composition including the ICP, the ICP comprising a polypropylene homopolymer and within the range of from 10 wt % to 45 wt % of propylene copolymer based on the weight of the ICP, wherein the copolymer comprises from 20 wt % to 44 wt % ethylene, 1-butene, 1-hexene and/or 1-octene derived units and from 80 to 56 wt % propylene-derived units based on the weight of the propylene copolymer, the propylene-based impact copolymer having a Melt Flow Rate (230&#xb0; C./2.16 kg) within the range of from 10 g/10 min to 50 g/10 min and an Elongation at Break of greater than 70%.

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 a polymer composition comprising: 70 wt % to 99.5 wt % of a nitrile-group containing elastomer, wherein the elastomer has: a Mooney Viscosity of 15 to 115 MU; and a nitrile monomer content of 0.5 wt % to 50 wt %; and 0.5 wt % to 30 wt % of a non-functionalized plasticizer (NFP), wherein the NFP has: a kinematic viscosity at 100&#xb0; C. of 4 to 1000 cSt, a flash point of &#x2267;200&#xb0; C., a viscosity index of &#x2267;120, and a specific gravity of &#x2266;0.865; and wherein the composition has: a 25% compression set at 70 hours and &#x2212;30&#xb0; C. that is at least 110% of the 25% compression set of same composition without the NFP tested at the same conditions, and a retained tensile strength, in MPa, after 168 hours at 175&#xb0; C., that is at least about 88% of the retained tensile strength of the same composition that has not been aged.

Modifiers for nitrile containing elastomers

The present invention relates to plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.

Plasticized polyolefin compositions

The present invention relates to fibers and nonwovens made from plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.

Fibers and nonwovens from plasticized polyolefin compositions

Provided are a propylene polymer compositions comprising a propylene copolymer and a propylene homopolymer polymerized in the presence of the propylene copolymer. The propylene polymer compositions exhibit properties such as broad molecular weight distribution, low crystallinity, high solubles and superior crystallization kinetics and are useful in fast cycle-time processing methods such as injection molding, sheet extrusion, thermoforming, and oriented film fabrication. Also provided is a process for preparing the propylene polymer compositions in the presence of a catalyst and at least two electron donors using sequential or parallel polymerization reaction zones. Finally, articles made from the propylene polymer composition are provided, particularly articles requiring high stiffness, high heat deflection temperature, good fatigue resistance and low temperature impact resistance such as appliance parts.

Propylene polymer compositions and processes for making the same

The present invention relates to articles made from plasticized polyolefin compositions comprising a polyolefin and a non-functionalized hydrocarbon plasticizer.

Articles from plasticized polyolefin compositions

The present invention relates to articles made from plasticized thermoplastic polyolefin compositions comprising a thermoplastic polyolefin, a nucleating agent, and a non-functionalized hydrocarbon plasticizer.

Articles from plasticized thermoplastic polyolefin compositions

Growing community of inventors

Houston, TX, United States of America

Chon-Yie Lin