# US 2010/0168376 A1 · Production of a functionalized polytriazole polymer

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- Number: US 2010/0168376 A1
- Document ID: US20100168376A1
- Status: Published application
- Kind: A1
- Application number: 12/721,838
- Filed: 2010-03-11
- Published: 2010-07-01
- Earliest claimed: 2007-01-31
- Assignees: GKSS-Forschungszentrum Geesthacht GmbH
- Inventors: Mariela Leticia Ponce; Dominique De Figueiredo Gomes; Suzana Nunes; Volker Abetz
- Web page: https://patentgrep.com/patent/US20100168376A1

## CPC

- D01F 6/76: from other polycondensation products
- C08G 73/08: Polyhydrazides; Polytriazoles; Polyaminotriazoles; Polyoxadiazoles
- C08J 5/2256: {based on macromolecular compounds obtained by reactions other than those involving carbon-to-carbon bonds, e.g. obtained by polycondensation}
- H01M 8/103: having nitrogen, e.g. sulfonated polybenzimidazoles [S-PBI], polybenzimidazoles with phosphoric acid, sulfonated polyamides [S-PA] or sulfonated polyphosphazenes [S-PPh]
- H01M 8/1048: Ion-conducting additives, e.g. ion-conducting particles, heteropolyacids, metal phosphate or polybenzimidazole with phosphoric acid
- H01M 8/1081: starting from solutions, dispersions or slurries exclusively of polymers
- C08J 2379/06: Polyhydrazides; Polytriazoles; Polyamino-triazoles; Polyoxadiazoles
- Y02E 60/50: Fuel cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- D01F: CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A method for the production of a functionalized polytriazole polymer, particularly a poly(1,2,4-triazole)-polymer, includes the steps of (a) mixing a hydrazine salt, particularly hydrazine sulfate, with at least an aromatic and/or heteroaromatic dicarboxylic acid and/or at least a dicarboxylic acid derivate in polyphosphoric acid and if necessary further components for obtaining a solution; (b) heating the solution in a protective gas atmosphere for obtaining polyhydrazides and adding aromatic and/or heteroaromatic primary amines to the solution; and (c) precipitating a polymer. If necessary, neutralization in a basic solution may be carried out.

## Claims

### Claim 1

A functionalized polytriazole polymer obtained by a method comprising the steps of:
a) mixing a hydrazine salt with at least one of a dicarboxylic acid and a dicarboxylic acid derivative in polyphosphoric acid to obtain a solution;
b) heating the solution in a protective gas atmosphere and adding at least one primary amine to the solution to form polyhydrazides, wherein said primary amine is selected from a group consisting of aromatic primary amines and heteroaromatic primary amines; and
c) precipitating a polymer from the solution.

### Claim 2 (depends on 1)

The functionalized polymer according to claim 1, wherein a molar ratio N/C of nitrogen to carbon is between 0.168 and 0.175.

### Claim 3 (depends on 1)

The functionalized polymer according to claim 1, wherein a molar ratio S/C of sulfur to carbon is between 0.018 and 0.400.

### Claim 4 (depends on 1)

The functionalized polymer according to claim 1, having a molecular weight approximately in a range of 105 g/mol or above.

### Claim 5 (depends on 1)

The functionalized polymer according to claim 1, having an intrinsic viscosity, measured in dimethylsulfoxide, within a range between 1 and 5 dL/g.

### Claim 6 (depends on 1)

The functionalized polymer according to claim 1, wherein the functionalized polymer is soluble in aprotic polar solvents and in strong acids.

### Claim 7 (depends on 1)

A membrane comprising a functionalized polymer according to claim 1.

### Claim 8 (depends on 7)

The membrane according to claim 7 for use in a fuel cell.

### Claim 9 (depends on 1)

A fiber comprising a functionalized polymer according to claim 1.