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Title: Substituted polyacetylene separation membrane

Abstract

A separation membrane useful for gas separation, particularly separation of C.sub.2+ hydrocarbons from natural gas. The invention encompasses the membrane itself, methods of making it and processes for using it. The membrane comprises a polymer having repeating units of a hydrocarbon-based, disubstituted polyacetylene, having the general formula: ##STR1## wherein R.sub.1 is chosen from the group consisting of C.sub.1 -C.sub.4 alkyl and phenyl, and wherein R.sub.2 is chosen from the group consisting of hydrogen and phenyl. In the most preferred embodiment, the membrane comprises poly(4-methyl-2-pentyne) ›PMP!. The membrane exhibits good chemical resistance and has super-glassy properties with regard to separating certain large, condensable permeant species from smaller, less-condensable permeant species. The membranes may also be useful in other fluid separations.

Inventors:
 [1];  [2]
  1. Palo Alto, CA
  2. Tokyo, JP
Issue Date:
Research Org.:
Membrane Technology and Research, Inc. (Menlo Park, CA)
OSTI Identifier:
871320
Patent Number(s):
5707423
Application Number:
08/663906
Assignee:
Membrane Technology and Research, Inc. (Menlo Park, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
FG03-94ER81811
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
substituted; polyacetylene; separation; membrane; useful; gas; particularly; hydrocarbons; natural; encompasses; methods; processes; comprises; polymer; repeating; units; hydrocarbon-based; disubstituted; formula; str1; chosen; consisting; -c; alkyl; phenyl; hydrogen; preferred; embodiment; poly; 4-methyl-2-pentyne; pmp; exhibits; chemical; resistance; super-glassy; properties; regard; separating; condensable; permeant; species; less-condensable; membranes; fluid; separations; membrane comprises; chemical resistance; natural gas; preferred embodiment; gas separation; separation membrane; repeating units; membrane useful; fluid separation; fluid separations; repeating unit; comprises poly; substituted poly; /95/96/

Citation Formats

Pinnau, Ingo, and Morisato, Atsushi. Substituted polyacetylene separation membrane. United States: N. p., 1998. Web.
Pinnau, Ingo, & Morisato, Atsushi. Substituted polyacetylene separation membrane. United States.
Pinnau, Ingo, and Morisato, Atsushi. Tue . "Substituted polyacetylene separation membrane". United States. https://www.osti.gov/servlets/purl/871320.
@article{osti_871320,
title = {Substituted polyacetylene separation membrane},
author = {Pinnau, Ingo and Morisato, Atsushi},
abstractNote = {A separation membrane useful for gas separation, particularly separation of C.sub.2+ hydrocarbons from natural gas. The invention encompasses the membrane itself, methods of making it and processes for using it. The membrane comprises a polymer having repeating units of a hydrocarbon-based, disubstituted polyacetylene, having the general formula: ##STR1## wherein R.sub.1 is chosen from the group consisting of C.sub.1 -C.sub.4 alkyl and phenyl, and wherein R.sub.2 is chosen from the group consisting of hydrogen and phenyl. In the most preferred embodiment, the membrane comprises poly(4-methyl-2-pentyne) ›PMP!. The membrane exhibits good chemical resistance and has super-glassy properties with regard to separating certain large, condensable permeant species from smaller, less-condensable permeant species. The membranes may also be useful in other fluid separations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

Patent:

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