RESILIENT ION EXCHANGE MEMBRANES PREPARED BY POLYMERIZING IONIC SURFACTANT MONOMERS
申请人:Saltworks Technologies, Inc.
公开号:US20150044366A1
公开(公告)日:2015-02-12
A method for making a resilient ion exchange membrane comprising polymerizing a composition containing at least an ionic surfactant monomer having an ethylenic group and a long hydrophobic alkyl group filling the pores of and covering the surfaces of a porous substrate. The hydrophobic long alkyl group in the ionic surfactant monomer provides ion exchange membranes with improved mechanical properties, and good chemical stability.
Resilient Anion Exchange Membranes Prepared By Polymerizing A Composition
申请人:Saltworks Technologies, Inc.
公开号:US20160030894A1
公开(公告)日:2016-02-04
A resilient anion exchange membrane including a homogeneous cross-linked ion-transferring polymer substantially filling pores and substantially covering surfaces of a porous substrate, wherein the resilient anion exchange membrane is prepared by polymerizing a composition including a quaternary ammonium cationic surfactant monomer, a crosslinking monomer including two or more ethylenic groups, a free radical initiator, and a solvent.
ACRYLAMID-POLYMERE UND VERFAHREN ZUR TERTIÄREN ERDÖLFÖRDERUNG UNTER VERWENDUNG DIESER POLYMERE
申请人:BASF SE
公开号:EP3409716A1
公开(公告)日:2018-12-05
Die vorliegende Anmeldung betrifft ein Acrylamid-Polymer. Zudem betrifft die vorliegende Erfindung dessen Verwendung bei der Erdölförderung. Darüber hinaus betrifft die vorliegende Erfindung ein Verfahren zur Erdölförderung, insbesondere zur tertiären Erdölförderung, wobei eine wässrige Zusammensetzung enthaltend mindestens ein Acrylamid-Polymer P durch mindestens eine Injektionsbohrung in eine unterirdische Formation einpresst und der unterirdische Formation durch mindestens eine Produktionsbohrung Rohöl entnommen wird.
Reusable high performance water based drilling fluids
申请人:Weatherford Technology Holdings, LLC
公开号:US10669468B2
公开(公告)日:2020-06-02
Compositions emulate oil based fluids include an aqueous phase and an organic internal phase, which creates an osmotic membrane within the aqueous continuous phase. The osmotic membrane allows hydration-dehydration mechanisms to be in place and control interactions between formation and fluid, where the non-aqueous phase is composed of glycerols, polyglycerols, poly hydroxyl alcohols, monosaccharide derivatives, polysaccharide derivatives, or mixtures and combinations thereof, while the aqueous phase contains additives that impart different inhibiting mechanisms to the overall composition, where the additives include, without limitation, amphoteric polymers, potassium and/or sodium salts up to saturation and/or acrylamides.
Oxidation of allylic alcohols, amines, and sulfides mediated by assembled triphase catalyst of phosphotungstate and non-cross-linked amphiphilic copolymer
A novel catalyst PWAA, an assembled complex of phosphotungstic acid (H3PW12O40) and a non-cross-linked copolymer of N-isopropylacrylamide with an ammonium, was developed. It is an amphiphilic, cross-linked, and supramolecular insoluble complex and showed catalytic activity on oxidation with aqueous hydrogen peroxide. PWAA, used in 2.7 x 10(-5) -2.0 x 10(-3) mol equiv., catalyzed oxidation of allylic alcohols, amines, and sulfides efficiently. The turnover number (TON) of PWAA reached up to 35,000. PWAA showed a good stability in organic/aqueous media and was reused three to five times. (C) 2004 Elsevier Ltd. All rights reserved.