Search International and National Patent Collections

1. (WO2017069795) GAS SEPARATION MEMBRANES BASED ON FLUORINATED AND PERFLUORINATED POLYMERS

Pub. No.:    WO/2017/069795    International Application No.:    PCT/US2016/017365
Publication Date: Fri Apr 28 01:59:59 CEST 2017 International Filing Date: Thu Feb 11 00:59:59 CET 2016
IPC: B01D 53/22
B01D 71/32
B01D 71/34
B01D 71/36
B01D 71/44
B01D 71/76
Applicants: MEMBRANE TECHNOLOGY AND RESEARCH, INC.
OKAMOTO, Yoshiyuki
KOIKE, Yasuhiro
Inventors: OKAMOTO, Yoshiyuki
KOIKE, Yasuhiro
ZHANG, Hao
HE, Zhenjie
MERKEL, Timothy C.
Title: GAS SEPARATION MEMBRANES BASED ON FLUORINATED AND PERFLUORINATED POLYMERS
Abstract:
A process for separating components of a gas mixture using gas-separation copolymer membranes. These membranes use a selective layer made from copolymers of partially fluorinated or perfluorinated dioxolane monomers and a second monomer, such as dioxane or a partially fluorinated dioxolane. The resulting membranes have superior selectivity performance for gas pairs of interest while maintaining fast gas permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyflon® AD, and Cytop®.