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    • 1. 发明申请
    • AMORPHOUS FLUORINATED COPOLYMER GAS SEPARATION MEMBRANES
    • 非晶荧光共聚物气体分离膜
    • WO2016201222A1
    • 2016-12-15
    • PCT/US2016/036884
    • 2016-06-10
    • COMPACT MEMBRANE SYSTEMS, INC
    • SHANGGUAN, NingFEIRING, AndrewMAJUMDAR, Sudipto
    • B01D61/38C07C7/144C07C21/18C08F214/26C08K5/02
    • B01D71/32B01D53/228B01D67/0006B01D71/52B01D71/76B01D2323/06B01D2323/08B01D2325/20C07C17/38C08F214/186C07C21/18C07C21/185
    • Membranes having a permselective active layer of a copolymerized perfluorinated monomer and an non-fluorinated alkylvinylester monomer demonstrate superior selective permeability performance for separating gas mixtures compared to membranes of exclusively perfluorinated polymers. Preferred active layer compositions are copolymers of perfluoro-2,2-dimethyl-1,3 dioxole (PDD) copolymerized with an alkylvinyl ester such as vinyl acetate, and vinyl pivalate, and with alkylvinyl esters that are substantially hydrolyzed to provide copolymerized vinyl alcohol functionality. The membranes can have a thin, high diffusion rate, "gutter layer" of a fluorinated polymer highly permeable to nitrogen positioned between the active layer and a porous support layer. A novel copolymer effective in selectively permeable membranes is a copolymer of PDD and an alkylvinyl ester compound having the formula H 2 C=CHOC(0)R 1 in which R 1 is a linear or branched alkyl group of from 2 to 5 carbon atoms.
    • 具有共聚全氟化单体和非氟化烷基乙烯基酯单体的选择性活性层的膜与专门的全氟化聚合物的膜相比,显示出优异的用于分离气体混合物的选择性渗透性能。 优选的活性层组合物是与烷基乙烯基酯如乙酸乙烯酯和新戊酸乙烯酯共聚的全氟-2,2-二甲基-1,3-二氧杂环戊烯(PDD)和基本上水解以提供共聚乙烯醇官能团的烷基乙烯基酯的共聚物 。 膜可以具有薄的高扩散速率,位于有源层和多孔支撑层之间的氮高度可渗透的氟化聚合物的“沟槽层”。 在选择性渗透膜中有效的新型共聚物是PDD和具有式H 2 C = CHOC(O)R 1的烷基乙烯基酯化合物的共聚物,其中R 1是2至5个碳原子的直链或支链烷基。