Fine polybenzimidazole-containing particles

Details Fine polybenzimidazole-containing particles Fine polybenzimidazole-containing particles

1992-05-26

1993-06-29

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521138, 521184, 524606, 524607, 524608, 525435, 528491, C08J 9228, C08J 9232

Patent

active

052235505

ABSTRACT:
Fine, porous polybenzimidazole-containing particles prepared by spray-atomizing/quenching a polybenzimidazole-containing polymer solution into porous polybenzimidazole-containing particles, and fluidized bed, oppose jet milling the particles into fine, porous polybenzimidazole-containing particles. The milled particles exhibit a narrow particle size distribution centered at about a 5 .mu.m mean particle size, a surface area of about 35 m.sup.2 /g, and an open porosity of about 1.2 cm.sup.2 /gm which is at pore radius of less than about 100 nm.

REFERENCES:
patent: 4628067 (1986-12-01), Chen, Sr. et al.

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