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Title: Poly(ethylene oxide) functionalization

Abstract

A simple procedure is provided by which the hydroxyl termini of poly(ethylene oxide) can be appended with functional groups to a useful extent by reaction and precipitation. The polymer is dissolved in warmed toluene, treated with an excess of organic base and somewhat less of an excess of a reactive acylating reagent, reacted for several hours, then precipitated in isopropanol so that the product can be isolated as a solid, and salt byproducts are washed away. This procedure enables functionalization of the polymer while not requiring laborious purification steps such as solvent-solvent extraction or dialysis to remove undesirable side products.

Inventors:
Publication Date:
Research Org.:
Seeo, Inc., Hayward, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1129165
Patent Number(s):
8,691,919
Application Number:
13/251,246
Assignee:
Seeo, Inc. (Hayward, CA) NETL
DOE Contract Number:  
OE0000223
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Oct 01
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Pratt, Russell Clayton. Poly(ethylene oxide) functionalization. United States: N. p., 2014. Web.
Pratt, Russell Clayton. Poly(ethylene oxide) functionalization. United States.
Pratt, Russell Clayton. Tue . "Poly(ethylene oxide) functionalization". United States. https://www.osti.gov/servlets/purl/1129165.
@article{osti_1129165,
title = {Poly(ethylene oxide) functionalization},
author = {Pratt, Russell Clayton},
abstractNote = {A simple procedure is provided by which the hydroxyl termini of poly(ethylene oxide) can be appended with functional groups to a useful extent by reaction and precipitation. The polymer is dissolved in warmed toluene, treated with an excess of organic base and somewhat less of an excess of a reactive acylating reagent, reacted for several hours, then precipitated in isopropanol so that the product can be isolated as a solid, and salt byproducts are washed away. This procedure enables functionalization of the polymer while not requiring laborious purification steps such as solvent-solvent extraction or dialysis to remove undesirable side products.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 08 00:00:00 EDT 2014},
month = {Tue Apr 08 00:00:00 EDT 2014}
}

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Works referenced in this record:

Solubilities of Quaternary Ammonium Salts in Certain Organic Solvents
journal, July 1952

  • Hughes, Vincent L.; Vernon, Arthur A.
  • The Journal of Physical Chemistry, Vol. 56, Issue 7, p. 927-928
  • DOI: 10.1021/j150499a026