Abstract:
A polyarylene ether copolymer comprising i) at least one block comprising in polymerized form A) isosorbide, isomannide, isoidide or a mixture thereof and B) at least one unit comprising at least one difunctional compound comprising at least one dichlorodiaryl sulfone, a dichlorodiaryl ketone or a mixture thereof and ii) at least one block comprising in polymerized form C) at least one polyalkylene oxide, a process for its preparation and its use in the preparation of coatings, films, fibers, foams, membranes or molded articles.
Abstract:
The present invention relates to hyper-branched compounds, a method of synthesizingthe hyper-branched compounds and applications of the hyper-branched compounds. Thehyper-branched compounds of the present invention include hyper-branched fluorinatedcompounds, hyper-branched fluorinated graphene and hyper-branched aminefunctionalized graphene oxide.
Abstract:
La présente invention concerne une membrane polymère conductrice anionique pour système électrochimique comprenant un matériau polymère organique de base obtenu par traitement dans un solvant approprié de la polyépichlorhydrine (PECH) par une amine tertiaire conduisant à un liquide qui est coulé sur une plaque et soumis à des opérations successives d'évaporation et de réticulation, caractérisée en ce qu'elle contient au moins une poudre minérale, de préférence une poudre céramique minérale distribuée de manière homogène dans la masse du matériau polymère organique de base de ladite membrane.
Abstract:
Disclosed herein is a gas separation membrane comprising a furan-based polymer, an apparatus comprising the gas separation membrane, and a process for separating a mixture of gases using said gas separation membrane. The process comprises contacting one side of a gas separation membrane comprising a furan-based polymer with a mixture of gases having different gas permeances, whereby at least one gas from the mixture of gases permeates preferentially across the gas separation membrane, thereby separating the at least one gas from the mixture of gases.
Abstract:
The invention provides a filtration membrane which comprises a porous support and, covalently bonded to a surface thereof, a layer comprising a plurality of vesicles having transmembrane proteins incorporated therein, said vesicles being formed from an amphiphilic block copolymer; characterised in that within said layer, vesicles are covalently linked together to form a coherent mass. The membrane may be prepared by a process which comprises providing an aqueous suspension of vesicles having transmembrane proteins incorporated therein, said vesicles being formed from an amphiphilic block copolymer having reactive end groups; depositing said suspension of vesicles on a surface of a porous support; and providing reaction conditions such that covalent bonds are formed between different vesicles and between vesicles and said surface.
Abstract:
향상된 수투과도 및 박리강도를 갖는 복합 중공사막 및 그 제조방법이 개시된다. 본 발명의 복합 중공사막은 외표면 및 내표면을 갖는 튜브형 고분자막, 및 상기 고분자막의 외표면 및 내표면 사이에 배치된 튜브형 편물을 포함하되, 상기 튜브형 편물은 복수의 원사들로 제조되고, 상기 원사들 각각은 제1 멀티필라멘트 및 제2 멀티필라멘트를 포함하고, 상기 제1 멀티필라멘트는 3 내지 50 데니어의 섬도를 각각 갖는 다수의 제1 모노필라멘트들을 포함하며, 상기 제2 멀티필라멘트는 0.4 초과 3 미만의 데니어의 섬도를 각각 갖는 다수의 제2 모노필라멘트들을 포함한다.
Abstract:
A membrane including a polyarylnitrile copolymer is presented. The polyarylnitrile copolymer includes structural units having a formula (I) and at least one terminal group having a formula (II), wherein "a" is 0, 1, 2, or 3; "m" is an integer having a value of 35 to 150; R 1 is independently at each occurrence a hyrogen atom, a halogen atom, a nitro group, a cyano group, a C 1 -C 12 aliphatic radical, a C 3 -C 12 cycloaliphatic radical, or a C 3 -C 12 aromatic radical; R 2 and R 3 are independently a C 1 -C 12 aliphatic radical, a C 3 -C 12 cycloaliphatic radical, or a C 3 -C 12 aromatic radical; L is an oxygen atom or a sulfur atom; and Ar is independently at each occurrence a residue of an aromatic diol or a residue of an aromatic dihalide.
Abstract:
Gegenstand der Erfindung ist eine asymmetrisch poröse Membran M aus mindestens zwei Amino NH-Gruppen pro Molekül aufweisendem thermoplastischen Siliconelastomer S1, das mittels Aldehyd vernetzt ist; zwei Verfahren zur Herstellung der mittels Aldehyd vernetzten asymmetrisch porösen Membran M, bei dem in einem ersten Schritt eine Lösung aus thermoplastischem Siliconelastomer S1, das mindestens zwei Amino NH-Gruppen pro Molekül aufweist, und Lösemittel L hergestellt wird, in einem zweiten Schritt die Lösung in eine Form gebracht wird, in einem dritten Schritt, die in Form gebrachte Lösung mit einem Fällmedium F in Kontakt gebracht wird, wobei sich eine Membran ausbildet, in einem vierten Schritt Lösemittel L und Fällmedium F aus der Membran entfernt werden und in einem fünften Schritt die Membran einer Vernetzung unterworfen wird, wobei die kovalent vernetzte Membran M entsteht, wobei beim ersten Verfahren im ersten Schritt und beim zweiten Verfahren im fünften Schritt ein Aldehyd enthaltendes Aldehydreagenz AR zugesetzt wird; sowie die Verwendung der Membran M für die Trennung von Stoffgemischen.