Patent ID: 7361716
Filing Date: 2008-04-22
Classification: C07D,C08G

Abstract:
1. A method of preparing a polymer which comprises structural units of formula I, in which formula: Ar is an aromatic cyclic system with 4 to 20 carbon atoms, which may be substituted with a substituent chosen from the group consisting of a non-branched C t is equal to 0, 1 or 2, R R in which formula R′ R R′ and that the polymer with structural units of the formula I is prepared through polymerization with the aid of a base into a polymer which comprises units having the formula III in which formula R R″2 is chosen from the group comprising R and for the preparation of the polymer with units having the formula I, in which formula t is equal to 1 or 2, through oxidation of at least a number of the units of the polymer having the formula III.