Production of a functionalized polytriazole polymer
AssigneeHelmholtz-Zentrum Geesthacht Zentrum für Material-und Küstenforschung GmbH
InventorsMariela Leticia Ponce, Dominique De Figueiredo Gomes, Suzana Nunes, Volker Abetz
Life of this patent
Estimating the term…
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.
Claims7
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 polytriazoles, 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, wherein the functionalized polymer is soluble in aprotic polar solvents and in strong acids,
- wherein a molar ratio S/C of sulfur to carbon is between 0.018 and 0.400.
Dependencies are inferred from the claim text.