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    • 61. 发明申请
    • Polymer Membranes Derived from Aromatic Polyimide Membranes
    • 衍生自芳族聚酰亚胺膜的聚合物膜
    • US20100243567A1
    • 2010-09-30
    • US12412653
    • 2009-03-27
    • Chunqing LiuRaisa SerbayevaMan-Wing TangLubo ZhouPeter K. Coughlin
    • Chunqing LiuRaisa SerbayevaMan-Wing TangLubo ZhouPeter K. Coughlin
    • B01D53/22B01D71/64B01D61/00C08L77/06C08F2/48
    • B01D71/64B01D67/0088B01D2323/08B01D2323/30
    • The present invention discloses a new type of high performance polymer membranes derived from aromatic polyimide membranes and methods for making and using these membranes. The polymer membranes described in the present invention were derived from aromatic polyimide membranes by crosslinking followed by thermal treating. The aromatic polyimide membranes were made from aromatic polyimide polymers comprising both pendent hydroxy functional groups ortho to the heterocyclic imide nitrogen and cross-linkable functional groups in the polymer backbone. The high performance polymer membranes showed significantly improved permeability for gas separations compared to the aromatic polyimide membranes without any treatment. The high performance polymer membranes also showed significantly improved selectivity for gas separations compared to the thermal-treated but non-UV-crosslinked aromatic polyimide membranes. The high performance polymer membranes of the present invention are suitable for liquid, gas, and vapor separations, as well as for catalysis and fuel cell applications.
    • 本发明公开了一种衍生自芳族聚酰亚胺膜的新型高性能聚合物膜以及制造和使用这些膜的方法。 本发明中描述的聚合物膜通过交联然后进行热处理从芳族聚酰亚胺膜衍生而来。 芳族聚酰亚胺膜由芳族聚酰亚胺聚合物制成,其中包含杂环酰亚胺氮原子的邻接羟基官能团和聚合物主链中的可交联官能团。 与没有任何处理的芳族聚酰亚胺膜相比,高性能聚合物膜显示出显着改善气体分离的渗透性。 与热处理但非UV交联的芳族聚酰亚胺膜相比,高性能聚合物膜还显示出对气体分离的选择性显着提高。 本发明的高性能聚合物膜适用于液体,气体和蒸汽分离,以及催化和燃料电池应用。
    • 65. 发明申请
    • Polybenzoxazole Polymer-Based Mixed Matrix Membranes
    • 聚苯并恶唑聚合物基混合基质膜
    • US20100133171A1
    • 2010-06-03
    • US12412643
    • 2009-03-27
    • Chunqing LiuMan-Wing TangRaisa SerbayevaLubo Zhou
    • Chunqing LiuMan-Wing TangRaisa SerbayevaLubo Zhou
    • B01D39/16
    • B01D71/82B01D67/0079B01D69/148
    • The present invention discloses new types of polybenzoxazole-based mixed matrix membranes and methods for making and using these membranes. The polybenzoxazole-based mixed matrix membranes are prepared by fabricating a polyimide-based mixed matrix membrane by dispersing molecular sieve particles in a continuous aromatic polyimide matrix with pendent hydroxyl groups ortho to the heterocyclic imide nitrogen; and then converting the polyimide-based mixed matrix membrane to a polybenzoxazole-based mixed matrix membrane by heating between 300° and 600° C. under inert atmosphere or vacuum. The polybenzoxazole-based mixed matrix membranes of the present invention can be fabricated into any convenient geometry such as flat sheet (or spiral wound), tube, hollow fiber, or thin film composite. These polybenzoxazole-based mixed matrix membranes exhibit high thermal stability, significantly higher selectivity than the neat polybenzoxazole polymer membranes, and much higher permeability than traditional mixed matrix membranes.
    • 本发明公开了新型的基于苯并恶唑的混合基质膜,以及制造和使用这些膜的方法。 基于聚苯并恶唑的混合基质膜通过将分子筛颗粒分散在具有与杂环酰亚胺氮原子相邻的侧羟基的连续芳族聚酰亚胺基体中制备聚酰亚胺基混合基质膜来制备; 然后通过在惰性气氛或真空下在300℃和600℃之间加热将聚酰亚胺基混合基质膜转变成聚苯并恶唑类混合基质膜。 本发明的基于聚苯并恶唑的混合基质膜可以制成任何方便的几何形状,例如平板(或螺旋缠绕),管,中空纤维或薄膜复合材料。 这些基于聚苯并恶唑的混合基质膜具有高的热稳定性,比纯聚苯并恶唑聚合物膜显着更高的选择性,并且比传统的混合基质膜具有更高的渗透性。
    • 66. 发明申请
    • Fluoropolymer Coated Membranes
    • 含氟聚合物涂膜
    • US20090277837A1
    • 2009-11-12
    • US12115726
    • 2008-05-06
    • Chunqing LiuMan-Wing Tang
    • Chunqing LiuMan-Wing Tang
    • B01D71/32B05D3/00B01D53/22B01D61/00B01D67/00
    • B01D61/025B01D61/362B01D67/0011B01D67/0079B01D67/0088B01D69/10B01D69/12B01D69/141B01D71/028B01D71/10B01D71/32B01D2325/022B01D2325/24C10K1/20Y02A20/131
    • The present invention discloses fluoropolymer coated membranes and methods for making and using these membranes. The fluoropolymer coated membranes described in the current invention are prepared by coating a porous asymmetric membrane layer with a thin layer of fluoropolymer coating. The porous asymmetric membrane layer comprises an asymmetric cellulosic membrane, an asymmetric polymer membrane, or an asymmetric molecular sieve/polymer mixed matrix membrane with a low selectivity and high permeance. The fluoropolymer coating improves the selectivity of the porous asymmetric membrane layer and maintains the membrane performance with time. The fluoropolymer coated membranes are suitable for a variety of liquid, gas, and vapor separations such as desalination of water by reverse osmosis, non-aqueous liquid separation such as deep desulfurization of gasoline and diesel fuels, ethanol/water separations, pervaporation dehydration of aqueous/organic mixtures, CO2/CH4, CO2/N2, H2/CH4, O2/N2, olefin/paraffin, iso/normal paraffins separations, and other light gas mixture separations.
    • 本发明公开了含氟聚合物涂层膜以及制造和使用这些膜的方法。 在本发明中描述的含氟聚合物涂布的膜通过涂覆具有薄层氟聚合物涂层的多孔不对称膜层来制备。 多孔非对称膜层包含不对称纤维素膜,不对称聚合物膜或具有低选择性和高渗透性的不对称分子筛/聚合物混合基质膜。 含氟聚合物涂层改善了多孔不对称膜层的选择性并随时间保持膜的性能。 含氟聚合物涂层膜适用于各种液体,气体和蒸气分离,如通过反渗透脱水,非水液体分离,如汽油和柴油燃料的深度脱硫,乙醇/水分离,渗透蒸发脱水 /有机混合物,CO 2 / CH 4,CO 2 / N 2,H 2 / CH 4,O 2 / N 2,烯烃/石蜡,异/正链烷烃分离和其它轻质气体混合物分离。
    • 67. 发明申请
    • Molecular Sieve/Polymer Asymmetric Flat Sheet Mixed Matrix Membranes
    • 分子筛/聚合物不对称平板混合基质膜
    • US20090152763A1
    • 2009-06-18
    • US11954454
    • 2007-12-12
    • Chunqing LiuStephen T. WilsonDavid A. Lesch
    • Chunqing LiuStephen T. WilsonDavid A. Lesch
    • B29D7/01
    • B01D69/148B01D67/0079B01D69/06B01D71/028B01D2325/022
    • The present invention discloses an approach for making mixed matrix membranes (MMMS) and methods for using these membranes. These MMMs contain a continuous polymer matrix and dispersed microporous molecular sieve particles. This invention also pertains to control of the thickness of the thin dense selective mixed matrix membrane layer that is equal to or greater than the particle size of the largest molecular sieve particles for making large scale asymmetric MMMs. In particular, the invention is directed to making asymmetric flat sheet MMM by a phase inversion technique. The MMMs of the present invention exhibit at least 20% increase in selectivity compared to the polymer membranes prepared from their corresponding continuous polymer matrices. The MMMs of the present invention are suitable for a variety of liquid, gas, and vapor separations.
    • 本发明公开了一种制备混合基质膜(MMMS)的方法和使用这些膜的方法。 这些MMM含有连续的聚合物基质和分散的微孔分子筛颗粒。 本发明还涉及等于或大于用于制造大规模不对称MMM的最大分子筛颗粒的粒度的薄致密选择性混合基质膜层的厚度的控制。 特别地,本发明涉及通过相位反转技术制造不对称平板MMM。 与由其相应的连续聚合物基质制备的聚合物膜相比,本发明的MMM显示出至少20%的选择性增加。 本发明的MMM适用于各种液体,气体和蒸气分离。
    • 68. 发明申请
    • Molecular Sieve/Polymer Hollow Fiber Mixed Matrix Membranes
    • 分子筛/聚合物中空纤维混合基质膜
    • US20090152755A1
    • 2009-06-18
    • US11954463
    • 2007-12-12
    • Chunqing LiuStephen T. WilsonDavid A. Lesch
    • Chunqing LiuStephen T. WilsonDavid A. Lesch
    • D04H3/16
    • B01D69/148B01D67/0079B01D69/08B01D69/087B01D71/028
    • The present invention discloses a method for making mixed matrix membranes (MMMs) and methods for using these membranes. These MMMs contain a continuous polymer matrix and dispersed microporous molecular sieve particles. This invention also pertains to control the thickness of the thin dense selective mixed matrix layer equal to or greater than the particle size of the largest molecular sieve particles for making large scale asymmetric MMMs. In particular, the invention is directed to make asymmetric hollow fiber MMM by a phase inversion technique. The MMMs of the present invention exhibit at least 20% increase in selectivity compared to the polymer membranes prepared from their corresponding continuous polymer matrices. The MMMs of the present invention are suitable for a variety of liquid, gas, and vapor separations.
    • 本发明公开了一种制备混合基质膜(MMM)的方法和使用这些膜的方法。 这些MMM含有连续的聚合物基质和分散的微孔分子筛颗粒。 本发明还涉及控制等于或大于用于制造大规模非对称MMM的最大分子筛颗粒的粒度的薄致密选择性混合基质层的厚度。 特别地,本发明涉及通过相位反转技术制造不对称中空纤维MMM。 与由其相应的连续聚合物基质制备的聚合物膜相比,本发明的MMM显示出至少20%的选择性增加。 本发明的MMM适用于各种液体,气体和蒸气分离。
    • 69. 发明申请
    • Method of Making Polymer Functionalized Molecular Sieve/Polymer Mixed Matrix Membranes
    • 制备聚合物官能化分子筛/聚合物混合基质膜的方法
    • US20090131242A1
    • 2009-05-21
    • US11940539
    • 2007-11-15
    • Chunqing LiuStephen T. WilsonDavid A. LeschDouglas B. Galloway
    • Chunqing LiuStephen T. WilsonDavid A. LeschDouglas B. Galloway
    • B01J20/28
    • B01J20/28004B01D53/228B01D61/362B01D67/0088B01D67/0093B01D69/148B01D71/028B01D71/64B01D71/68B01D2256/24B01D2257/504B01J20/18B01J20/26B01J20/28026Y02C10/10
    • The present invention discloses a method of making polymer functionalized molecular sieve/polymer mixed matrix membranes (MMMs) with either no macrovoids or voids of less than several Angstroms at the interface of the polymer matrix and the molecular sieves by incorporating polyethersulfone (PES) or cellulose triacetate (CTA) functionalized molecular sieves into a continuous polyimide or cellulose acetate polymer matrix. The MMMs, particularly PES functionalized AlPO-14/polyimide MMMs and CTA functionalized AlPO-14/CA MMMs have good flexibility and high mechanical strength, and exhibit significantly enhanced selectivity and/or permeability over the polymer membranes made from the corresponding continuous polymer matrices for carbon dioxide/methane (CO2/CH4), hydrogen/methane (H2/CH4), and propylene/propane separations. The MMMs are suitable for a variety of liquid, gas, and vapor separations such as deep desulphurization of gasoline and diesel fuels, ethanol/water separations, pervaporation dehydration of aqueous/organic mixtures, CO2/CH4, CO2/N2, H2/CH4, O2/N2, olefin/paraffin, iso/normal paraffins separations, and other light gas mixture separations.
    • 本发明公开了一种通过加入聚醚砜(PES)或纤维素,在聚合物基体和分子筛的界面处制备聚合物官能化分子筛/聚合物混合基质膜(MMM)的方法,该聚合物官能化分子筛/聚合物混合基质膜(MMMs)在聚合物基体和分子筛的界面处没有大于或等于几埃的大孔或空隙 三乙酸酯(CTA)官能化分子筛成为连续聚酰亚胺或乙酸纤维素聚合物基质。 MMMs,特别是PES功能化的AlPO-14 /聚酰亚胺MMM和CTA官能化的AlPO-14 / CA MMM具有良好的柔韧性和高的机械强度,并且显示出从由相应的连续聚合物基体制成的聚合物膜显着增强的选择性和/或渗透性 二氧化碳/甲烷(CO2 / CH4),氢/甲烷(H2 / CH4)和丙烯/丙烷分离。 MMM适用于各种液体,气体和蒸气分离,如汽油和柴油的深度脱硫,乙醇/水分离,水/有机混合物的渗透蒸发脱水,CO2 / CH4,CO2 / N2,H2 / CH4, O2 / N2,烯烃/石蜡,异/正链烷烃分离和其他轻质气体混合物分离。