POLYMERS COMPRISING PYRROLE FRAGMENTS IN MAIN CHAIN AND METHOD FOR THEIR PREPARING Russian patent published in 2005 - IPC

FIELD: organic chemistry, chemical technology, polymers.

SUBSTANCE: invention relates to polymers comprising pyrrole fragments in the main chain that can be used in making thermostable fibers, films, adhesion materials and other articles for electronic and semiconductive industry, and to a method for their preparing. Polypyrrole polymer comprises an elementary link of the following structure: wherein Ar means ; ; M means bridge groups: -O-; -CH₂-. Method for preparing polypyrrole polymer involves firstly carrying out the polyheterocyclization reaction of aromatic diketoxime and diethynyl arene that are taken in the equimole ratios. Reaction is carried out at temperature 120°C for 3 h in dimethylsulfoxide/KOH medium. Before precipitation of polymer tetrabutyl ammonium bromide is added to the reaction mixture in the ratio diketoxime : tetrabutyl ammonium bromide = 1:0.1 mole and methylene chloride in the ratio diketoxime : methylene chloride = 1;10 mole. Reduced viscosity value of prepared polymers is 0.35-0.5 dl/g. Invention allows creating new polymers possessing valuable properties complex and soluble in organic solvents.

EFFECT: improved preparing method, valuable properties of polymers.

3 cl, 4 ex