发明名称 |
High performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes |
摘要 |
In the present invention high performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes and methods for making and using these membranes have been developed. The cross-linked polybenzoxazole and polybenzothiazole polymer membranes are prepared by: 1) first synthesizing polyimide polymers comprising pendent functional groups (e.g.,—OH or—SH) ortho to the heterocyclic imide nitrogen and cross-linkable functional groups in the polymer backbone; 2) fabricating polyimide membranes from these polymers; 3) converting the polyimide membranes to polybenzoxazole or polybenzothiazole membranes by heating under inert atmosphere such as nitrogen or vacuum; and 4) finally converting the membranes to high performance cross-linked polybenzoxazole or polybenzothiazole membranes by a crosslinking treatment, preferably UV radiation. The membranes can be fabricated into any convenient geometry. The high performance cross-linked polybenzoxazole and polybenzothiazole polymer membranes of the present invention are suitable for a variety of liquid, gas, and vapor separations.
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申请公布号 |
US8127937(B2) |
申请公布日期 |
2012.03.06 |
申请号 |
US20090412633 |
申请日期 |
2009.03.27 |
申请人 |
LIU CHUNQING;TANG MAN-WING;SERBAYEVA RAISA;ZHOU LUBO;UOP LLC |
发明人 |
LIU CHUNQING;TANG MAN-WING;SERBAYEVA RAISA;ZHOU LUBO |
分类号 |
B01D71/64;B01D53/22;B01D59/12;B01D61/00;B01D71/60;B01D71/66 |
主分类号 |
B01D71/64 |
代理机构 |
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