Glass bubble filled polybenzimidazole
AssigneeHoechst Celanese Corporation
InventorsPaul N. Chen, Sr., Victor C. Astone, William M. Cooper, O. Richard Hughes
Life of this patent
Estimating the term…
Abstract
A moldable hollow glass filled PBI composition. The composition may be prepared by making a well-mixed slurry of glass microspheres in a solution of PBI in a suitable solvent, and then spinning the slurry through a jet or die under pressure and into a water bath where the particles coagulate. The solvent dissolves in the water, allowing solvent-free PBI-glass composite particles to be isolated.
Claims12
A moldable composition comprising polybenzimidazole and glass bubbles, said glass bubbles comprising at least about 10% by volume of said composition.
A moldable composition consisting essentially of polybenzimidazole and glass bubbles, wherein at least about 10% by volume of said composition consists of said glass bubbles.
A moldable composition comprising poly[2,2'-(m-phenylene)-5,5'-bibenzimidazole] and about 10-70% by volume glass bubbles.
Dependencies are inferred from the claim text.