Air Products and Chemicals, Inc.

Evonik Operations Gmbh

Wei Cao

Vladimir Yliy Gershtein

Michael Ian Cook

John Frederick Cirucci

Shafiq Fazel

Shiying Zheng

Robert Marjo Theodoor Rasing

Rajiv Krishan Agarwal

Sudhir Ananthachar

Edze Jan Tijsma

George L Ryals

Robert W Apollo

Daniel McNesby

Amine-epoxy curing agents are disclosed including at least one saturated heterocyclic compound having two nitrogen heteroatoms according to formula (I) and at least one saturated fused bicyclic heterocyclic compound having three nitrogen heteroatoms according to formula (II): wherein X is independently selected from a hydrogen atom, a linear or branched Cto Calkyl group and a substituted or un-substituted phenyl group, Yis a direct bond or a divalent polyethylene polyamine group having 1 to 8 nitrogen atoms or a divalent polyethylene polyamine derivative having 1 to 8 nitrogen atoms, Yis a direct bond or a divalent polyethylene polyamine group having 1 to 7 nitrogen atoms and R is independently a hydrogen atom or a group selected from C-Clinear, cyclic, and branched alkyl, alkenyl, and alkaryl groups.

Nitrogen-containing heterocyclic epoxy curing agents, compositions and methods

Provided is a process and apparatus for separating a multi-component feed stream wherein a porous separator is used to effectively create, via permeation and phase change, at least three fractions of differing compositions.

Process for separating components of a multi-component feed stream

Method for the purification of a volatile metal hydride comprising obtaining a volatile metal hydride feed containing one or more acidic impurities, one of which is a sulfur-containing impurity; contacting the feed with an alkaline material and reacting at least a portion of the sulfur-containing impurity with the alkaline material to remove a portion of the sulfur-containing impurity from the feed and provide an intermediate purified material, wherein the contacting of the feed with an alkaline material is effected at a sub-ambient temperature; and contacting the intermediate purified product with an adsorbent material to remove at least a portion of the sulfur-containing impurity from the intermediate purified material and provide a purified volatile metal hydride product.

Removal of sulfur-containing impurities from volatile metal hydrides

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Orefield, PA, United States of America

Wei Cao