摘要:
The present invention concerns a process for making a polyareneazole polymer comprising the steps of: a) contacting azole-forming monomers, metal powder, and optionally P2O5, in polyphosphoric acid to form a mixture; b) blending the mixture at a temperature of from about 50° C. to about 110° C.; c) further blending the mixture at a temperature of up to about 145° C. to form a solution comprising an oligomer; d) optionally, degassing the solution; and e) reacting the oligomer solution at a temperature of about 160° C. to about 250° C. for a time sufficient to form a polymer.
摘要翻译:本发明涉及一种制备聚azole唑聚合物的方法,包括以下步骤:a)使形成吡咯的单体,金属粉末和任选的P 2 O 5 O 5在多磷酸 酸形成混合物; b)在约50℃至约110℃的温度下混合该混合物; c)在高达约145℃的温度下进一步混合该混合物以形成包含低聚物的溶液; d)任选地,使溶液脱气; 和e)在约160℃至约250℃的温度下使所述低聚物溶液反应足以形成聚合物的时间。
摘要:
Disclosed are processes for preparing polyareneazole polymers including contacting a molar excess of a free base in water with a terephthalic acid salt to form an aqueous mixture, adjusting the pH to precipitate a monomer complex, contacting the monomer complex with metal powder, and polymerizing the monomer complex. Polyareneazoles, filaments and yarns are also disclosed.
摘要:
Disclosed are processes for preparing polyareneazole polymers that include contacting, in polyphosphoric acid, azole-forming monomers and metal powder, the metal powder added in an amount of from about 0.05 to about 0.9 weight percent, based on the total weight of the azole-forming monomers, and reacting the azole-forming monomers to form the polyareneazole polymers. Polyareneazoles, filaments and yarns are also disclosed.
摘要:
Disclosed are processes for preparing polyareneazole polymers characterized as providing polymer solutions having an inherent viscosity of at least about 22 dl/g at 30° C. at a polymer concentration of 0.05 g/dl in methane sulfonic acid. Polyareneazoles, filaments and yarns are also disclosed.