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:

Pratt, Russell Clayton

Issue Date:

Tue Apr 08 00:00:00 EDT 2014

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

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C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08G65/3322 - {acyclic}

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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