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Title: Stable, concentrated solutions of polyaniline using amines as gel inhibitors

Abstract

Stable, concentrated solutions of high-molecular weight polyaniline using amines as gel inhibitors. Certain amine compounds (gel inhibitors) are used to form highly concentrated, stable solutions of the emeraldine base form of polyaniline in numerous organic solvents from which coatings, films and fibers are readily prepared without problems associated with rapid gelation which occurs when concentrated solutions are attempted without the use of the gel inhibitors of the present invention. Tertiary amines are used to solubilize low-molecular weight fractions (M.sub.w <120,000, M.sub.n <30,000) of the pernigraniline, emeraldine, and leucoemeraldine oxidation states of polyaniline as concentrated (>20 wt. %) polyaniline solutions, while primary and secondary amines are used to produce solutions having 15-40 wt % of high-molecular weight polyaniline [M.sub.w.gtoreq.120,000, M.sub.n.gtoreq.30,000]. Concentrated solutions of polyaniline co-polymers or ring and/or nitrogen-substituted polyanilines may also be prepared.

Inventors:
 [1];  [2]
  1. Los Alamos, NM
  2. Tesuque, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
874636
Patent Number(s):
6429282
Assignee:
The Regents of the University of California (Los Alamos, NM)
Patent Classifications (CPCs):
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
D - TEXTILES D01 - NATURAL OR MAN-MADE THREADS OR FIBRES D01F - CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
stable; concentrated; solutions; polyaniline; amines; inhibitors; high-molecular; weight; amine; compounds; form; highly; emeraldine; base; numerous; organic; solvents; coatings; films; fibers; readily; prepared; associated; rapid; gelation; occurs; attempted; tertiary; solubilize; low-molecular; fractions; msubw; <120000; msubn; <30000; pernigraniline; leucoemeraldine; oxidation; >20; wt; primary; secondary; produce; 15-40; msubwgtoreq120000; msubngtoreq30000; co-polymers; andor; nitrogen-substituted; polyanilines; molecular weight; organic solvent; tertiary amine; weight polyaniline; concentrated solution; /528/252/524/

Citation Formats

Wang, Hsing-Lin, and Mattes, Benjamin R. Stable, concentrated solutions of polyaniline using amines as gel inhibitors. United States: N. p., 2002. Web.
Wang, Hsing-Lin, & Mattes, Benjamin R. Stable, concentrated solutions of polyaniline using amines as gel inhibitors. United States.
Wang, Hsing-Lin, and Mattes, Benjamin R. Tue . "Stable, concentrated solutions of polyaniline using amines as gel inhibitors". United States. https://www.osti.gov/servlets/purl/874636.
@article{osti_874636,
title = {Stable, concentrated solutions of polyaniline using amines as gel inhibitors},
author = {Wang, Hsing-Lin and Mattes, Benjamin R},
abstractNote = {Stable, concentrated solutions of high-molecular weight polyaniline using amines as gel inhibitors. Certain amine compounds (gel inhibitors) are used to form highly concentrated, stable solutions of the emeraldine base form of polyaniline in numerous organic solvents from which coatings, films and fibers are readily prepared without problems associated with rapid gelation which occurs when concentrated solutions are attempted without the use of the gel inhibitors of the present invention. Tertiary amines are used to solubilize low-molecular weight fractions (M.sub.w <120,000, M.sub.n <30,000) of the pernigraniline, emeraldine, and leucoemeraldine oxidation states of polyaniline as concentrated (>20 wt. %) polyaniline solutions, while primary and secondary amines are used to produce solutions having 15-40 wt % of high-molecular weight polyaniline [M.sub.w.gtoreq.120,000, M.sub.n.gtoreq.30,000]. Concentrated solutions of polyaniline co-polymers or ring and/or nitrogen-substituted polyanilines may also be prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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Works referenced in this record:

Polyaniline: Synthesis and Characterization of the Emeraldine Oxidation State by Elemental Analysis
book, January 1987


LiCl Induced Morphological Changes in Polyaniline Base and Their Effect on the Electronic Properties of the Doped Form
journal, January 1996


Polyaniline spinning solutions and fibers
journal, June 1993


Conductivity Relaxation of 1-Methyl-2-pyrrolidone-Plasticized Polyaniline Film
journal, November 1995


Polyaniline: Dependency of selected properties on molecular weight
journal, March 1993


Concurrent reduction and modification of polyaniline emeraldine base with pyrrolidine and other nucleophiles
journal, January 1997