Perfluoroalkyl ethyl alcohols via perfluoroalkyl acetaldehydes
作者:Sheng Peng、Kenneth G. Moloy
DOI:10.1016/j.jfluchem.2017.07.013
日期:2017.9
to commercially important perfluoroalkyl ethylalcohols (RfCH2CH2OH) is described. This route involves the addition of perfluoroalkyl iodides to alkyl vinyl ethers using sulfinatodehalogenation chemistry, followed by catalytic hydrogenation of the intermediate mixture of perfluoroalkylacetaldehyde and perfluoroalkylacetaldehyde hemiacetal to the desired alcohol.
Fluoropolymers and membranes comprising fluoropolymers (I)
申请人:Pall Corporation
公开号:US10471396B2
公开(公告)日:2019-11-12
Disclosed are a copolymer, porous membranes made from the copolymer, and a method of treating fluids using the porous membranes to remove metal ions, for example, from fluids originating in the microelectronics industry, wherein the copolymer includes polymerized monomeric units I and II, wherein monomeric unit I is of the formula A-X—CH2—B, wherein A is Rf—(CH2)n, Rf is a perfluoro alkyl group of the formula CF3—(CF2)x—, wherein x is 3-12, n is 1-6, X is O or S, and B is vinylphenyl, the monomeric unit II is haloalkyl styrene, and optionally wherein the halo group of haloalkyl is replaced with an optional substituent, for example, ethylenediamine tetra acetic acid, iminodiacetic acid, or iminodisuccinic acid.
本发明公开了一种共聚物、由该共聚物制成的多孔膜,以及使用该多孔膜处理流体以去除金属离子(例如来自微电子工业的流体)的方法,其中共聚物包括聚合单体单元 I 和 II,其中单体单元 I 为式 A-X-CH2-B,其中 A 为 Rf-(CH2)n、Rf为式CF3-(CF2)x-的全氟烷基,其中x为3-12,n为1-6,X为O或S,B为乙烯基苯基,单体单元II为卤代烷基苯乙烯,其中卤代烷基的卤基可任选地被取代基取代,例如乙二胺四乙酸、亚氨基二乙酸或亚氨基二丁二酸。
FLUOROPOLYMERS AND MEMBRANES COMPRISING FLUOROPOLYMERS (I)
申请人:Pall Corporation
公开号:US20180043313A1
公开(公告)日:2018-02-15
Disclosed are a copolymer, porous membranes made from the copolymer, and a method of treating fluids using the porous membranes to remove metal ions, for example, from fluids originating in the microelectronics industry, wherein the copolymer includes polymerized monomeric units I and II, wherein monomeric unit I is of the formula A-X—CH
2
—B, wherein A is Rf—(CH
2
)n, Rf is a perfluoro alkyl group of the formula CF
3
—(CF
2
)
x
—, wherein x is 3-12, n is 1-6, X is O or S, and B is vinylphenyl, the monomeric unit II is haloalkyl styrene, and optionally wherein the halo group of haloalkyl is replaced with an optional substituent, for example, ethylenediamine tetra acetic acid, iminodiacetic acid, or iminodisuccinic acid.