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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:
Issue Date:
Research Org.:
Seeo, Inc., Hayward, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1129165
Patent Number(s):
8691919
Application Number:
13/251,246
Assignee:
Seeo, Inc. (Hayward, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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 = {2014},
month = {4}
}

Patent:

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