Baker Hughes Oilfield Operations LLC

Orion Polymer Corp.

Xiaofeng Wang

Jerry J Weers

Sankaran Murugesan

Chulsung Bae

Wojciech J Jakubowski

Onome Ugono

Kui Xu

Kekeli A Ekoue-Kovi

Ding Tian

Analette Carrasco

Eun Joo Park

Catherine C Blackwell

Douglas Nugent

Corby A Roberts

Yu Seung Kim

Bharat Shrimant

Gregory Kline

Santosh Adhikari

Disclosed herein in various embodiments are aryl-ether free polyaromatic polymers based on random copolymer architecture with two, three, or more aromatic ring components and methods of preparing those polymers. The polymers of the present disclosure can be used as ion exchange membranes, e.g., as anion exchange membranes, and ionomer binders in alkaline electrochemical devices.

Quaternized polyaromatics for use in electrochemical devices

Green demulsifiers useful for demulsifying emulsions of water and crude oil are made by reacting together an alcohol, a multifunctional acid and/or anhydride, and a fatty acid, and optionally a polyol that is polyethylene glycol and/or polypropylene glycol. The green demulsifier has ester bonds between the reactant moieties. These ester bonds can hydrolyze which results in relatively high biodegradation.

Methods of designing green demulsifiers

A method for direct synthesis of cyclic carbonates is achieved by reacting at least one epoxide with carbon dioxide in the presence of a choline catalyst, such as choline chloride, under mild conditions such as a temperature between about 25° C. to 150° C. and a pressure of from about atmospheric to 75 psi (0.52 MPa), in a cyclic carbonate solvent. The choline catalyst may be the only catalyst used, and a co-catalyst or hydrogen bond donor is not necessary. The concentration of choline catalyst in the solvent ranges from about 0.5 mol % to about 10 mol %, based on the epoxide.

Direct synthesis of cyclic carbonates using choline chloride as catalyst under mild conditions

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Katy, TX, United States of America

Xiaofeng Wang