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1. WO2020092018 - AMINE FUNCTIONAL CELLULOSE SUBSTRATE FOR THIN FILM COMPOSITE MEMBRANES AND METHODS OF PREPARING THE SAME

Publication Number WO/2020/092018
Publication Date 07.05.2020
International Application No. PCT/US2019/056906
International Filing Date 18.10.2019
IPC
B01D 69/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
10Supported membranes; Membrane supports
B01D 69/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
12Composite membranes; Ultra-thin membranes
B01D 71/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
08Polysaccharides
10Cellulose; Modified cellulose
B01D 71/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
08Polysaccharides
12Cellulose derivatives
B01D 71/16 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
08Polysaccharides
12Cellulose derivatives
14Esters of organic acids
16Cellulose acetate
B01D 71/56 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
56Polyamides, e.g. polyester-amides
Applicants
  • FLUID TECHNOLOGY SOLUTIONS (FTS), INC. [US]/[US]
Inventors
  • ARENA, Jason, T.
  • HERRON, John, R.
Agents
  • MORRISON, Angela, L.
Priority Data
62/753,43531.10.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) AMINE FUNCTIONAL CELLULOSE SUBSTRATE FOR THIN FILM COMPOSITE MEMBRANES AND METHODS OF PREPARING THE SAME
(FR) SUBSTRAT DE CELLULOSE À FONCTION AMINE POUR MEMBRANES COMPOSITES À FILM MINCE ET PROCÉDÉS DE PRÉPARATION ASSOCIÉS
Abstract
(EN)
Membranes for filtration and methods of making the same are disclosed. In embodiments, methods include casting a cellulose ester solution onto a material, which is immersed in a water bath and in an aqueous solution including an amine and a photoinitiator. The material is exposed to ultraviolet light to produce an amine-functionalized cellulose ester substrate. In embodiments, the substrate is immersed in an aqueous solution including a di- or higher-functional amine and in a non-polar solution including a di- or higher-functional acyl chloride or an isocyanate to produce an active layer on the substrate. The layer and substrate are cured to produce a thin film composite membrane.
(FR)
La présente invention concerne des membranes pour filtration et des procédés de fabrication de celles-ci. Dans des modes de réalisation, les procédés comprennent le coulage d’une solution d’ester de cellulose sur un matériau, qui est immergé dans un bain d’eau et dans une solution aqueuse comprenant une amine et un photoamorceur. Le matériau est exposé à une lumière ultraviolette pour produire un substrat d’ester de cellulose à fonction amine. Dans des modes de réalisation, le substrat est immergé dans une solution aqueuse comprenant une amine difonctionnelle ou supérieure et dans une solution non polaire comprenant un chlorure d’acyle difonctionnel ou supérieur ou un isocyanate pour produire une couche active sur le substrat. La couche et le substrat sont durcis pour produire une membrane composite à film mince.
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