PROCESSO PARA FORMAÇÃO DE UM POLÍMERO

• Main Author: KIU-SEUNG LEE
• Format: Patent
• Language: Portuguese
• Published: 28.02.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

POLÍMERO. A invenção refere-se ao polímero que compreende os resíduos de 2-(4-amino fenil)-5 (6) amino benzimidazol (DAPBI), parafenileno diamina e dicloreto de tereftaloil, em que o polímero tem uma razão de bloco de pico de IPC de 1,45 a 1,47 e uma viscosidade inerente maior que 2 dl/g. The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5 (6) amino phenyl benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, comprising the steps of: a) forming a solution of DAPBI and paraphenylene diamine dihydrochloride in a solvent system comprising an organic solvent and an inorganic salt; b) cooling the solution to a temperature of 30° C. or less; c) adding a stoichiometric amount of terephthaloyl dichloride, relative to the total amount of the DAPBI and the paraphenylene diamine dihydrochloride, to the solution; and d) agitating the solution of step c) to form a polymer.