High inherent viscosity polymers and fibers therefrom
AssigneesMagellan Systems International, LLC, E.I. du Pont de Nemours and Company
InventorsDoetze Jakob Sikkema, David J. Rodini, Qinghong Fu Adkins, Steven R. Allen, Christopher William Newton
Life of this patent
Estimating the term…
Abstract
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.
Claims16
A poly(1,4-(2,5-dihydroxy)phenylene-2,6-pyrido[2,3-d:5,6-d′]bisimidazole) polymer, characterized as providing a polymer solution 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.
Dependencies are inferred from the claim text.