Cornell University

Novomer, Inc.

Florida State University Research Foundation, Inc.

Saudi Aramco Technologies Company

University of Minnesota

Uchicago Argonne, LLC

University of California

California Institute of Technology

Mitsubishi Chemical Corporation

Northwestern University

Eastman Chemical Company

Iowa State University Research Foundation Inc

Saurdi Aramco Technologies Company

Geoffrey William Coates

Scott D Allen

Anna E Cherian

Jay J Farmer

Alexei Alexeyevich Gridnev

Chris A Simoneau

Robert E LaPointe

Zengquan Qin

Claire Tova Cohen

Rufina Alamo

Carolina Ruiz-Orta

Jun Tian

John W Kramer

John M Rowley

Phillip D Hustad

Frank Steven Bates

Massimiliano Delferro

Aaron David Sadow

Kenneth R Poeppelmeier

Magali S Ferrandon

Susannah L Scott

Anne M Lapointe

James Eagan

Hiroharu Ajiro

Ming Cheng

Kathryn Peretti

Anne M LaPointe

Stephen Lee

Jeffrey M Rose

Robert H Grubbs

Peter Borden Mackenzie

Jason Clay Pearson

Christopher Moore Killian

Catherine A Falkner

Leslie Shane Moody

Gino Georges Lavoie

James Allen Ponasik, Jr

Glenn H Fredrickson

Fumihiko Shimizu

Hector D Abruna

Thomas F Miller, Iii

Thomas William Smith

Wataru Hirahata

Timothy James Clark

Rachna Khurana

Anthony Gerard Martin Barrett

Brett M Savoie

Michael A Webb

Hisashi Ohtaki

Henry A Kostalik, Iv

Kristine Klimovica

Eric Stoutenburg

Tsuyoshi Ando

Nicholas John Robertson

Peter T Wolczanski

Kevin Noonan

Brett P Fors

Peter C B Widger

Jessica Rachel Lamb

Aran Kathleen Hubbell

Bryce M Lipinski

Lilliana S Morris

Jeffrey K Uhrig

Nicholas J Robertson

Jonathan D Tedder

Alison M Wilders

Brooks Abel

Tina M Ovitt

Bradley M Chamberlain

Claire Lidston

Qi Zheng

Viswanath Mahadevan

Yutan D Y L Getzler

Julie Whitehead

Lewis J Fetters

Andrew F Mason

Kristina M Hugar

Matthew Ian Childers

Nicolas J Robertson

Thanh-Tam Truong

Joseph A R Schmidt

Anna Cherian

Disclosed herein are compounds and methods useful as carbonylation catalysts that improve steric properties so that reaction with epoxide is improved, reaction with lactones is avoided, and polymer bonds to the metal centers are weakened, which facilitates faster ring closure, that improve stability of the carbonylation catalyst by not being susceptible to hydrolysis, which reduces side products and improves recovery yields of the carbonylation catalyst after using to make lactones, and that have improved steric and electron properties so that release time of a lactone product is minimized, which reduces side reactions.

Carbonylation catalysts and methods of making the same

A semicrystalline multiblock copolymer includes alternating blocks of semicrystalline isotactic polypropylene (iPP) and semicrystalline polyethylene (PE), having a block arrangement according to formula (I):(iPP)(PE)(iPP)(PE)   (I),wherein p is 0 or 1; m is 0 or 1; n is 0 or 1; the sum of p, m, and n is 1, 2, or 3; and the sum of w, x, y, and z is greater than or equal to 40 kg/mol, with the provisos that: when m and n are 0, the sum of w and x is greater than or equal to 140 kg/mol; and when p and n are 0, the sum of y and x is greater than or equal to 140 kg/mol. Related compositions and methods are also provided.

Polyethylene and polypropylene block copolymers

A method of upcycling polymers to useful hydrocarbon materials. A catalyst with nanoparticles on a substrate selectively docks and cleaves longer hydrocarbon chains over shorter hydrocarbon chains. The catalyst includes metal nanoparticles in an order array on a substrate.

Catalytic polymer processing

Provided are methods of producing carbonyl compounds (e.g., carbonyl containing compounds) and catalysts for producing carbonyl compounds. Also provided are methods of making polymers from carbonyl compounds and polymers formed from carbonyl compounds. A method may produce carbonyl compounds, such as, for example α,α-disubstituted carbonyl compounds (e.g., α,α-disubstituted β-lactones). The polymers may be produced from α,α-disubstituted β-lactones, which may be produced by a method described herein.

Systems and methods for regioselective carbonylation of 2,2-disubstituted epoxides for the production of alpha,alpha-disubstituted beta-lactones

Provided are strain-hardened polymers. The polymers may include a plurality of polyether units (e.g., isotactic polypropylene oxide units) and one or more crystalline domains. The strain-hardened polymers may have a higher initial engineering yield stress and/or enthalpy of fusion than native polymer (e.g., polypropylene oxide that has not been strain-hardened). The strain-hardened polymers may be made by catalytic methods using bimetallic catalysts. Also provided are uses of the strain-hardened polymers.

Strain-hardened isotactic polymers and uses thereof

Disclosed herein are polymers, copolymers and polymer systems based on polypropiolactones which can be biodegradable and can enhance the recyclability of polymer systems, which can be functionalized to introduce desired functionality into the polymers and/or which may optionally be prepared from renewable raw materials. Disclosed are novel functionalized beta propiolactones. Some of the novel functionalized beta propiolactones have functional groups bound to the ring structure of the lactone that provide improved polymer systems. Disclosed are novel homopolymers of the functionalized beta propiolactones. Disclosed are novel copolymers based on the functionalized beta propiolactones with beta propiolactone or other monomers which copolymerize with the functionalized beta propiolactones.

Betapropiolactone and functionalized betapropiolactone based polymer systems

In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of COand epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having two or more sites that can initiate polymerization. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of &#x2014;OH end groups and a high percentage of carbonate linkages. The compositions are further characterized in that they contain polymer chains having an embedded polyfunctional moiety linked to a plurality of individual polycarbonate chains.

Polycarbonate polyol compositions and methods

A semicrystalline multiblock copolymer includes alternating blocks of semicrystalline isotactic polypropylene (iPP) and semicrystalline polyethylene (PE), having a block arrangement according to formula (I):(iPP)(PE)(iPP)(PE)&#x2003;&#x2003; (I),wherein p is 0 or 1; m is 0 or 1; n is 0 or 1; the sum of p, m, and n is 1, 2, or 3; and the sum of w, x, y, and z is greater than or equal to 40 kg/mol, with the provisos that: when m and n are 0, the sum of w and x is greater than or equal to 140 kg/mol; and when p and n are 0, the sum of y and x is greater than or equal to 140 kg/mol. Related compositions and methods are also provided.

Provided are catalysts, methods of making catalysts, methods of using catalysts, and copolymers made utilizing the catalysts. The catalyst has a metal salen complex group, a bridging group, and one or more co-catalyst groups. The metal salen complex group is attached to the bridging group and the bridging group is attached to the co-catalyst group. The copolymers made utilizing the catalysts are polyesters or polycarbonates.

Catalysts and methods for epoxide-based polymerizations

The invention provides: imidazole and imidazolium compounds of formulas (I) and (II): polymers containing a plurality of imidazolium-containing repeating units of formula (III'): and membranes and devices comprising the polymers. Also provided are methods of making the inventive compounds and polymers.

Imidazoles and imidazolium cations with exceptional alkaline stability

Provided are poly(arylamine)s. The polymers can be redox active. The polymers can be used as electrode materials in, for example, electrochemical energy storage systems. The polymers can be made by electropolymerization on a conducting substrate (e.g., a current collector).

Poly(arylamine)s and uses thereof

Provided are compositions comprising isotactic polyethers. Methods of making isotactic polyethers, and uses thereof are also disclosed. Also provided are bimetallic complexes that can be used as catalyst. Methods of making isotactic polyethers and bimetallic complexes and uses thereof are also disclosed. For example, a racemic bimetallic (salalen)CrCl polymerization catalyst was prepared and used alkyl diol, PO-oligomer triols, and aPPO and PCL diols as CSAs in order to produce &#x3b1;,&#x3c9;-hydroxy telechelic iPPO. These telechelic polymers have controlled molecular weights and are semicrystalline. Amorphous &#x3b1;,&#x3c9;-hydroxy telechelic PPO can also be produced by increasing the reaction temperature in conjunction with the use of CSAs.

Isotactic polyethers and bimetallic catalysts, methods of making same, and uses thereof

The present invention provides unimolecular metal complexes having increased activity in the copolymerization of carbon dioxide and epoxides. Also provided are methods of using such metal complexes in the synthesis of polymers. According to one aspect, the present invention provides metal complexes comprising an activating species with co-catalytic activity tethered to a multidentate ligand that is coordinated to the active metal center of the complex.

Catalysts and methods for polymer synthesis

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Ithaca, NY, United States of America

Geoffrey William Coates