Exxonmobil Chemical Patents Inc.

Celanese International Corporation

Carlos R Lopez-Barron

John Robert Hagadorn

Andy Haishung Tsou

Donna Jean Crowther

Antonios K Doufas

Yong Yang

Sarah J Mattler

Matthew William Holtcamp

Patrick Brant

Peijun Jiang

Jo Ann M Canich

Anthony Jay Dias

Gregory S Day

George Rodriguez

Lubin Luo

David F Sanders

John F Walzer, Jr

Xuan Ye

Man Kit Ng

Hamidreza Khakdaman

Alan Anthony Galuska

Charles James Ruff

Jingwen Zhang

Mosha H Zhao

Jacqueline A Lovell

Jan Kalfus

Abdul M Jangda

Nikola S Lambic

Brian J Rohde

Tzu-Pin Lin

Hillary L Bradshaw

Alexander V Zabula

Mark K Davis

Robert L Halbach

Avery R Smith

Crisita Carmen C H Atienza

Anna A Michels

This invention relates to a process to produce an ionomer comprising: 1) contacting, in a reactor, one or more C-Cα-olefins, an optional diene, and a metal alkenyl with a catalyst system comprising an activator, a catalyst compound, and a support; 2) forming a copolymer comprising one or more C-Cα-olefin monomers and about 0.01 wt % to about 20 wt %, based on the weight of the copolymer, of metal alkenyl; 3) functionalizing and quenching the polymerization reaction with one or more electrophilic groups; and 4) obtaining ionomer.

Polyolefin-based ionomers and production thereof

A thermoplastic vulcanizate composition, comprising a first phase bi-continuously intertwined with from about 10 wt % to 80 wt % of a second phase throughout the composition, and from about 0.1 wt % to about 10 wt % of a curative system, the first phase comprising polypropylene and the second phase comprising an at least partially cured elastomeric rubber composition, comprising from about 10 wt % to about 40 wt % ethylene, from about 5 wt % to about 10 wt % of a conjugated diene having from 4 to 12 carbon atoms, and from about 50 wt % to about 85 wt % of a C-Calpha olefin, based on the total weight of the elastomeric rubber composition present. A process for making is also disclosed.

Thermoplastic vulcanizate composition with bi-continuous nanostructured morphology

The present disclosure relates to poly(alpha-olefin)s and methods for making poly(alpha-olefin)s. A poly(alpha-olefin) may include about 95 wt % or greater C-Calpha-olefin content and have a weight average molecular weight of from about 1,000,000 g/mol to about 10,000,000 g/mol. A method for forming a poly(alpha-olefin) may include introducing one or more C-Calpha-olefins to a catalyst system comprising a catalyst compound and an activator. The method may include obtaining poly(alpha-olefin)s comprising about 95 wt % or greater C-Calpha-olefin content and having a weight average molecular weight of from about 1,000,000 g/mol to about 10,000,000 g/mol.

Poly(alpha-olefin)s and methods thereof

Bottlebrush poly(alpha olefin)s of high carbon number, greater than 12 such as poly(octadecene), are used as a thickener for a synthetic base oil grease lubricant that is based on oligomerized alpha olefin with carbon number from 7 to 12, such as oligo(decene). Dispersion aids are not required in the present lubricants because poly(octadecene) can be dissolved in oligo(decene). The lubricant is a solid grease formed by percolation/network of the poly(octadecene) crystals, at a sufficient concentration, after the crystallization of poly(octadecene), and water resistant having oxidation/high temperature stability.

Bimodal bottlebrush poly(alpha olefin) solid lubricants

This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes a pyridyldiamido transition metal complex, a metallocene compound, a support material and, optionally, an activator. The catalyst system may be used for preparing multi-modal polyolefins.

Supported catalyst systems and processes for use thereof

Disclosed is an article comprising polymers and copolymers selected from the group consisting of poly(vinylbiphenyl), poly(vinylcyclohexylstyrene), substituted versions thereof, and blends thereof, the polymer or copolymer having a weight average molecular weight (Mw) of at least 100 kg/mole and a glass transition temperature (Tg) of at least 100&#xb0; C. The polymers are desirably processed in the melted state at a temperature of at least 150&#xb0; C. to impart orientation and extensional strain hardening.

Poly(vinylbiphenyl) and poly(vinylcyclohexylstyrene) polymers and articles therefrom

An atactic polypropylene comb-block polyolefin comprising two blocks including a polyolefin backbone and atactic polypropylene combs pendant to the backbone having a weight average molecular weight of at least 8000 g/mole and a crystallinity of less than 20%, where the atactic polypropylene comb-block polyolefin has comb number of at least 2. The atactic polypropylene comb-block polyolefin is made by contacting at a temperature within a range from 20 to 70&#xb0; C. propylene with a first metallocene precursor to form vinyl-terminated atactic polypropylene to form vinyl-terminated atactic polypropylene, then contacting at a temperature within a range from 40 to 150&#xb0; C. the vinyl-terminated atactic polypropylene with ethylene, propylene, or both and a second metallocene precursor to form the backbone.

Atactic polypropylene comb block polyolefins useful as modifiers in polyolefins and hydrocarbons

Polymer blends comprising at least one olefin block copolymer such as poly(ethylene-b-ethylene/propylene-b-ethylene), and at least one propylene-based elastomer such as a propylene-ethylene random copolymer, such blends useful in elastic hygiene articles. The blends have improved permanent set compared to the propylene-based elastomer alone.

Compositions of olefin block copolymers and propylene-based elastomers

A process for preparing a polyethylene composition comprising contacting ethylene with a first salan catalyst precursor and an activator to form branched vinyl/vinylidene-terminated high density polyethylene having a number average molecular weight (Mn) of at least 5,000 g/mole; and contacting the branched vinyl/vinylidene-terminated high density polyethylene with ethylene and a second metallocene catalyst precursor and an activator to form a comb-block HDPE. The polyethylene composition comprises a polyethylene backbone, and one or more branched high density polyethylene combs pendant to the backbone, the combs having an Mn of at least 5,000 g/mole, where the polyethylene has a branching index (g') of less than 0.9.

Comb-block high density polyethylenes and methods of making them

This invention relates to a process to using an aminopyridinate scandium or yttrium metal (typically scandium) catalyst compound to produce ethylene conjugated diene copolymers, preferably ethylene isoprene copolymers having: 1) from 75 to 90 mol % ethylene; 2) from 10 to 25 mol % isoprene; 3) a Tg of 0&#xb0; C. or less; 4) 1,4 isomer present at 60 wt % or less; 5) 3,4 and 1,2 present at 40% or more; 6) Mn of 250,000 g/mol or less; and 7) optionally, a Tm of 100&#xb0; C. or less.

Process to produce ethylene conjugated diene copolymers and copolymers therefrom

Disclosed herein is a method to stabilize a poly(arylene ether) comprising combining a neat or diluted poly(arylene ether) with a vinyl or vinylidene-terminated polyolefin at a temperature of at least 80&#xb0; C. to form heated reaction components; combining a Br&#x3c6;nsted acid or Lewis acid with the heated reaction components; and isolating a polyolefin-poly(arylene ether) copolymer composition.

Stabilized poly(arylene ether) compositions and methods of making them

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

Hydrosilation of vinyl-terminated macromonomers

Growing community of inventors

Houston, TX, United States of America

Carlos R Lopez-Barron