Triptycene-based dianhydrides, polyimides, methods of making each, and methods of use

A technology of aromatic polyimide and triptycene, applied in separation methods, chemical instruments and methods, semi-permeable membrane separation, etc., can solve problems such as unsatisfied gas separation needs

Active Publication Date: 2016-01-20
KING ABDULLAH UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, current polyimides do not meet current gas separation needs, and thus new polyimides are needed

Method used

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  • Triptycene-based dianhydrides, polyimides, methods of making each, and methods of use
  • Triptycene-based dianhydrides, polyimides, methods of making each, and methods of use
  • Triptycene-based dianhydrides, polyimides, methods of making each, and methods of use

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[0047] Having now generally described embodiments of the invention, the examples describe some other embodiments. While embodiments of the invention have been described with reference to the examples and accompanying text and drawings, it is not intended that the embodiments of the invention be limited to these descriptions. On the contrary, it is intended to cover all alternatives, modifications and equivalents included within the spirit and scope of the embodiments of the present invention.

example 1

[0049] See Annex A

[0050] It should be noted that ratios, concentrations, amounts and other numerical data may be expressed herein in range format. It should be understood that such range forms are used for convenience and brevity and, therefore, should be construed in a flexible manner to include not only the values ​​as expressly stated by the boundaries of the stated range, but also all individual values ​​or values ​​encompassed within the stated range. Subranges, as if each value and subrange were expressly recited. For purposes of illustration, a concentration range of "about 0.1% to about 5%" should be interpreted to include not only the explicitly recited concentrations of about 0.1% to about 5% by weight, but also individual concentrations within the indicated range (eg, 1% , 2%, 3% and 4%) and subranges (eg 0.5%, 1.1%, 2.2%, 3.3% and 4.4%). In an embodiment, the term "about" may include conventional rounding according to significant figures of a value. Additiona...

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Abstract

A triptycene-based monomer, a method of making a triptycene-based monomer, a triptycene-based aromatic polyimide, a method of making a triptycene- based aromatic polyimide, methods of using triptycene-based aromatic polyimides, structures incorporating triptycene-based aromatic polyimides, and methods of gas separation are provided. Embodiments of the triptycene-based monomers and triptycene-based aromatic polyimides have high permeabilities and excellent selectivities. Embodiments of the triptycene-based aromatic polyimides have one or more of the following characteristics: intrinsic microporosity, good thermal stability, and enhanced solubility. In an exemplary embodiment, the triptycene-based aromatic polyimides are microporous and have a high BET surface area. In an exemplary embodiment, the triptycene-based aromatic polyimides can be used to form a gas separation membrane.

Description

Background technique [0001] Gas separation is an emerging technology with a rapidly growing market, including applications such as air separation for oxygen or nitrogen enrichment from natural gas streams, as well as acid gas removal and hydrocarbon recovery. The economics of membrane-based separation systems depend on the gas permeability (thickness and pressure normalized flux) and selectivity (preferential permeation of one gas over another) of the materials used. Unfortunately, there is a conventional trade-off between these two main parameters such that an increase in permeability coincides with a decrease in selectivity, and vice versa. This leads to what is commonly referred to as the "ceiling" of performance, defined by the polymeric material having the highest known combination of permeability and selectivity. It was modified to accommodate the discovery of better performing polymers and is therefore considered a specification of the state of the art. [0002] Polyi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10B01D71/64
CPCB01D71/64C08G73/1053C08G73/1075C08G73/1078B01D53/228C07D493/22C08G73/1085
Inventor 贝德·格哈奈姆恩果·品瑙哈雅·斯崴丹
Owner KING ABDULLAH UNIV OF SCI & TECH
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