Dow Global Technolgoies LLC

Rohm and Haas Company

Ddp Specialty Electronic Materials Us, LLC

Ddp Specialty Electronic Materials US 8, LLC

S.a.c. Corporation

The Dow Chemical Company

Daryl John Gisch

Chang-Soo Lee

William J Harris

Collin Hunter Martin

Christopher R Eicher

William I Harris

Stephen Pease

Chris Raymond Eicher

Dennis A Keeley

Scott T Matteucci

Jing Jin

H Robert Goltz

Charles R Marston

Jose Antonio Trejo-O'Reilly

Ryan Christopher Thomas

Matthew Lawrence Rodgers

Harlan Robert Goltz

James A Jagodzinski

Robert J Olsen

Marvin H Tegen

David C McDonald

Binyamin Feibush

John C Rohanna

Gongwei Pu

Brandon J Kern

Marvin K Tegen

Stanislas Baudouin

Ritchard C Parry

Bianca F Martins

Martin Slominski

Hongzhi Wang

Joshua Dear

Jose A Trejo O'REILLY

Dennis Keeley

David Mcdonald

Provided is a method of treating water comprising bringing water that contains dissolved chromium (VI) into contact with an anion exchange composition comprising

Treatment of water

Provided is an anion exchange composition comprising

Polymeric beads

A method of processing an aqueous solution,

Resin beads and use in processing of aqueous solutions

Provided is a resin bead comprising functional groups of structure (S1).

A process of separating carboxylic acids comprising two steps. The first step is to provide an aqueous solution comprising (i) one or more mono-carboxylic acids, (ii) one or more di-carboxylic acids, and (iii) one or more tri-carboxylic acids. The second step is to pass the aqueous solution through a collection of resin particles, where the resin particles comprise covalently bound quaternary ammonium groups, and wherein the collection of resin particles has uniformity coefficient of 1.5 or less.

Separating carboxylic acids

A method for chromatographically separating a first saccharide from a liquid eluent comprising the first saccharide and a second saccharide by passing the liquid eluent through a bed including a polymeric macroporous alkylene-bridged resin in calcium form.

Chromatographic separation of saccharides using polymeric macroporous alkylene-bridged resin

A catalyst prepared by polymerizing 0-98 weight % butylstyrene; 0-80 weight % vinyl toluene; 1.5-25 weight % divinyl benzene having 1-98 weight % of ethyl vinyl benzene; and 0-80 weight % styrene. Copolymer beads are made, sulfonated, and used as a catalyst.

Strong acid catalyst composition

A method for separating natural gas liquids (NGLs) from a hydrocarbon gas mixture containing natural gas liquids and methane, comprising the steps of: i) providing a bed of adsorbent selective for NGLs over methane; ii) passing a hydrocarbon gas mixture containing methane and NGL through the bed of adsorbent to at least partially remove NGLs from the gas mixture to produce: (a) NGL-loaded adsorbent and (b) NGL-depleted hydrocarbon gas mixture; iii) recovering the NGL-depleted hydrocarbon gas mixture; iv) regenerating the NGL-loaded adsorbent by at least partially removing NGLs from the adsorbent; and v) sequentially repeating steps (ii) and (iii) using regenerated adsorbent from step (iv).

Separation of hydrocarbons using regenerable macroporous alkylene-bridged adsorbent

A method for inhibiting formation of nitrosamines and an anion exchange resin produced therefrom comprising providing an anion exchange resin with a nitrosating agent and applying an antioxidant to the resin to inhibit formation of nitrosamines on the anion exchange resin.

Method for inhibiting nitrosamine formation in anion exchange resins

A method for inhibiting formation of nitrosamines and an anion exchange resin produced therefrom comprising providing an anion exchange resin with a nitrosating agent and mixing a cation exchange resin with the anion exchange resin to inhibit formation of nitrosamines on the anion exchange resin.

The invention generally relates to amination reactions and amination reaction products, and particularly to methods for aminating vinyl aromatic polymers utilizing tertiary amines. In one embodiment, the invention includes conducting an amination reaction by combining a tertiary amine and a vinyl aromatic polymer comprising benzyl chloride groups to form a reaction mixture and maintaining the pH of the reaction mixture within a designated range. In another embodiment, the invention includes an aminated vinyl aromatic polymer. In yet another embodiment, the invention includes an ion exchange resin including quaternary ammonium functionality. The invention is useful in preparing ion exchange resins suitable for a variety of applications such as the removal of perchlorate ions from water sources and recovery of gold cyanide from mining leach solutions.

Amination of vinyl aromatic polymers with tertiary amines

The invention includes ion exchange resins, methods of making ion exchange resins and their use in the removal of perchlorate from water. In one embodiment, the invention comprises a method for removing perchlorate from a water source by contacting the water with an ion exchange resin, wherein the ion exchange resin comprises particles of a crosslinked copolymer comprising: an interpenetrating polymer network (IPN) of at least two polymer components each having a styrenic content greater than 50 molar percent, and a quaternary ammonium functionality.

Perchlorate removal using ion exchange resins comprising interpenetrating polymer networks

The invention includes ion exchange resins and their use in the removal of chromium from water. In one embodiment, the invention comprises a method for removing chromium from a water source by contacting the water with an ion exchange resin, wherein the ion exchange resin comprises particles of a crosslinked copolymer comprising: an interpenetrating polymer network (IPN) of at least two polymer components each having a styrenic content greater than 50 molar percent, and a quaternary ammonium functionality.

Method for removing chromium from water using ion exchange resins including interpenetrating polymer networks

Novel packing materials are provided for liquid chromatography and/or solid phase extraction columns which will allow direct injection of biological fluids. These packing materials have a hydrophilic exterior layer and a hydrophobic, charged or otherwise selective portion that forms an underlayer or is embedded in the hydrophilic layer. During a chromatographic process large water soluble biopolymers will be in contact with the hydrophilic outer layer and be shielded from interacting with the underlayer or embedded portion and elute unretained. Small analytes, on the other hand, can be fully partitioned throughout the exterior and interior layers and are retained by hydrophobic or electrostatic interactions. Using such packings the direct analyses of plasma or serum for drug analysis is demonstrated.

Shielded stationary phases

The bonded phases generated from the reaction of aliphatic and aromatic azidosilanes with silica gel are suitable for use as packings in solid phase extraction columns for cleanup of urine samples for analysis of acid metabolites of cannabinoids. Such bonded phases are unique in their ability to selectively retain the acid metabolites of cannabinoids from a urine sample matrix.

Growing community of inventors

Midland, MI, United States of America

Daryl John Gisch