Exxonmobil Chemical Patents Inc.

Exxon Chemical Patents, Inc.

Univation Technologies, LLC

Other

Advanced Elastomer Systems, L.p.

Exxonmobil Chemical Company

Armenag Hagop Dekmezian

Peijun Jiang

Aspy Keki Mehta

Weiqing Weng

Sunny Jacob

Pradeep P Shirodkar

Palanisamy Arjunan

Cesar Alberto Garcia-Franco

Jo Ann Marie Canich

Charles Lewis Sims

Pawan Kumar Agarwal

Eric John Markel

David Raymond Johnsrud

Kevin Richard Squire

Peter William Manders

Galen Charles Richeson

Rajan K Chudgar

Patrick Brant

Jo Ann M Canich

Ramin Abhari

Natalie Ann Merrill

Main Chang

Olivier Jean Georjon

David John Lohse

Chon-Yie Lin

James Richard Ayers

Carlos U De Gracia

Maria Dolores Ellul

Richard B Pannell

Jianya Cheng

Jo Ann Canich

Abdelhadi Sahnoune

Charles James Ruff

Beverly Jean Poole

Andrew G Narvaez, Jr

Michael C Chen

Lutz Erich Jacob

Paul Edward McDaniel

Christopher R Davey

Keith A Nelson

David L Peters

Christopher Lewis Curry

Ronald Raymond Thackston

Nicolas Kappes

Michel Louis Faissat

Keith Edward Jolibois

Carlos U DeGracia

Andrew G Narvaez

Thomas L Peltier

Tetsuya Morioka

Joseph Gustaaf M Flendrig

David R Johnsrud

Ronald R Thackston

Keith E Jolibois

Paul E Mcdaniel

John Cheng

Lutz E Jacob

Nicholas Kappes

Weiquing Weng

A heterogeneous vulcanized polymer blend comprising a continuous phase comprising a thermoplastic polypropylene having a crystallinity of at least 30% and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron. The elastomeric copolymer has a crystallinity of less than 20% and is at least partially cross-linked such that no more than about 80 wt % of the elastomeric copolymer is extractable in cyclohexane at 23&#xb0; C.

Vulcanized polymer blends

A heterogeneous in-situ polymer blend comprising a continuous phase comprising a polypropylene having a crystallinity of at least 30% and a melting point temperature Tgreater than 130&#xb0; C., and a heat of fusion &#x394;Hgreater than 65 J/g; and a dispersed phase comprising particles of an elastomeric copolymer dispersed in the continuous phase and having an average particle size of less than 5 micron, the elastomeric copolymer comprising ethylene units and 0.001 to 5 wt % diene by weight of the copolymer, and having a crystallinity of less than 20% and being at least partially cross-linked such that the degree of cross-link is at least 20%.

Heterogeneous in-situ polymer blend

This invention relates to an adhesive comprising an olefin polymer composition comprising a first amorphous polymer having a crystallinity of 5% or less, prepared with a first catalyst; and a second crystalline polymer, differing in chemical and physical properties from the first polymer, having a crystallinity of 20% or more, prepared with a second catalyst; and where the olefin polymer composition has a Dot T-Peel of 1 Newton or more on Kraft paper; an Mw of at least 7,000 to 80,000; a branching index (g') of from 0.4 to 0.90 measured at the Mz of the polymer composition; and a crystallinity of between 5 and 40%.

Multiple catalyst system for olefin polymerization and polymers produced therefrom

The present invention describes polymer comprising one or more C3 to C40 olefins and having a Mw of 100,000 or less and a Dot T-Peel of 1 Newton or more. The polymer may have a branching index (g') of 0.95 or less measured at the Mz of the polymer, and a heat of fusion of 1 to 70 J/g. Also described are polymers of homopolypropylene or a copolymer of propylene and up to 5 mole % ethylene having: an isotactic run length of 1 to 30 as determined by Carbon 13 NMR and a percent of r dyad of greater than 20%, preferably from 20 to 70% as determined by Carbon 13 NMR. Also described are methods of making these and other polymers.

This invention relates to the preparation of thermoplastic vulcanizates (TPVs) with unique morphological features, more specifically, this invention relates to a method for preparing TPV compositions wherein the mixing of plastomers and elastomers are carried out in solvent with curatives to induce cross-linking.

Solution blending process for preparing thermoplastic vulcanizates

This invention relates to an in-reactor polymer blend comprising: (a) a first ethylene-containing polymer having a density of greater than 0.90 g/cmand a Mw of more than 20,000 g/mol and (b) a second ethylene-containing polymer having a density of less than 0.90 g/cmwherein the polymer blend has a Tm of at least 90&#xb0; C. (DSC second melt), a density of less than 0.92 g/cm, and the densities of the first and second polymers differ by at least 1%.

Thermoplastic elastomer polyolefin in-reactor blends and molded articles therefrom

A homogeneous polymer blend comprises a thermoplastic first polymer having a crystallinity of at least 30%; and a second polymer having a crystallinity of more than 5% and being at least partially cross-linked.

Homogeneous polymer blend and process of making the same

This invention relates to a foamable blend comprising an in-reactor polymer blend comprising: (a) a first propylene polymer component comprising 90 to 100 wt % propylene and from 0 to less than 10 wt % comonomer, said first propylene component having a Tm of 120&#xb0; C. or more; and (b) a second propylene polymer component comprising from 30 to 90 wt % propylene and 70 to 10 wt % comonomer, said second propylene polymer having an Mw of 30,000 g/mol or more, and said second propylene-containing polymer having a crystallinity different by at least 5% from the first polymer, wherein the polymer blend, prior to combination with a foaming agent, has: (i) a Tm of at least 120&#xb0; C.; (ii) a MFR of 10 dg/min or more; (iii) a tensile strength of at least 8 MPa; (iv) an elongation at break of at least 200%, and (v) a ratio of elongational viscosity at break to linear viscosity of 5 or more when the elongational viscosity is measured at a strain rate of 1 secand temperature of 180&#xb0; C.; and where when the blend is foamed with a foaming agent, the foamed article has a density of 800 kg/mor less.

Foamable thermoplastic reactor blends and foam article therefrom

An in-reactor polymer blend comprises (a) a propylene-containing first polymer; and (b) an ethylene-containing second polymer such that the polymer blend comprises between about 50 wt % and about 80 wt % units derived from ethylene and between about 50 wt % and about 20 wt % units derived from propylene. The blend is substantially free of dienes and the content of ethylene in the second polymer in the form of ethylene-ethylene-ethylene triads is at least 40%. The second polymer contains at least 0.1 branch having 8 or more carbon atoms per 10,000 carbons. In addition, the blend has a strain hardening index of at least 1.8, a shear thinning slope in the plot of log(dynamic viscosity) versus log(frequency) of less than &#x2212;0.2 and exhibits at least two peaks when subjected to Differential Scanning Calorimetry (first melt) corresponding to a first melting point of at least 150&#xb0; C. and a second melting point of at least 40&#xb0; C. such that the difference between the first and second melting temperatures is at least 20&#xb0; C.

Heterogeneous in-reactor polymer blends

This invention relates to an in-reactor polymer blend comprising: (a) a first ethylene-containing polymer having a density of greater than 0.90 g/cmand a Mw of more than 20,000 g/mol and (b) a second ethylene-containing polymer having a density of less than 0.90 g/cm, wherein the polymer blend has a Tm of at least 90&#xb0; C. (DSC second melt), a density of less than 0.92 g/cm, and the densities of the first and second polymers differ by at least 1%. Specifically this invention relates to an in-reactor polymer blend comprising: (a) a first ethylene polymer comprising 90 to 100 wt % ethylene and from 0 to less than 10 wt % comonomer, said first ethylene polymer component having density of greater than 0.920 g/cm, an Mw of 20,000 g/mol or more; and (b) a second ethylene polymer comprising from 70 to 90 wt % ethylene and 30 to 10 wt % comonomer, said second ethylene polymer having a density of 0.910 g/cmor less, wherein the polymer blend has:

A heterogeneous polymer blend comprises a dispersed phase comprising a thermoplastic first polymer having a crystallinity of at least 30% and a continuous phase comprising a second polymer different from the first polymer. The second polymer has a crystallinity of less than 20% and is at least partially cross-linked.

Heterogeneous polymer blend with continuous elastomeric phase and process of making the same

This invention relates to a molded article comprising an in-reactor polymer blend comprising: (a) a first propylene polymer comprising 90 to 100 wt % propylene and from 0 to less than 10 wt % comonomer, said first propylene component having a Tm of 135&#xb0; C. or more; and (b) a second propylene polymer comprising from 30 to 90 wt % propylene and 70 to 10 wt % comonomer, said second propylene polymer having an Mw of 30,000 g/mol or more, and said second propylene-containing polymer having a crystallinity different by at least 5% from the first polymer, wherein the polymer blend has:

Thermoplastic polyolefin in-reactor blends and molded articles therefrom

The invention relates to a polymer blend prepared by the process of combining under polymerization conditions: (A) a first catalyst capable of producing a first crystalline polymer having an Mw of 100,000 or less, (B) a second catalyst capable of preparing a second amorphous polymer having an Mw of 100,000 or less and differing in chemical or physical properties from the first polymer under equivalent polymerization conditions, (C) a cocatalyst, activator, scavenger, or combination thereof, and (D) one or more olefins; wherein the polymer blend is formed in-situ, comprises crystalline polymer segments and amorphous polymer segments, and has an Mw of 100,000 or less.

This invention relates to an adhesive comprising a polymer composition comprising at least 50 mol % of one or more C3 to C40 olefins where the polymer composition has (a) a Dot T-Peel of 1 Newton or more on Kraft paper; (b) an Mw of at least 7000 to 80,000; (c) a branching index (g') of from 0.4 to 0.90 measured at the Mz of the polymer composition; (d) a heat of fusion of 1 to 70 J/g; and (e) a heptane insoluble fraction of 70 weight % or less, based upon the weight of the polymer composition, where the heptane insoluble fraction has branching index g&#x2032; of 0.9 or less as measured at the Mz of the polymer composition.

Growing community of inventors

Kingwood, TX, United States of America

Armenag Hagop Dekmezian