High strength papers from floc and fibrids

Details High strength papers from floc and fibrids High strength papers from floc and fibrids

1991-01-18

1992-06-30

Jones, W. Gary

Paper making and fiber liberation

Processes and products

Plural fiber containing

162156, 1621573, 428395, 428902, 428903, 528184, 528185, 528331, D21H 1326

Patent

active

051260123

ABSTRACT:
A high strength fibrid-floc sheet is made of a floc which can be carbon, aramid or glass. The fibrids are made from the following units: ##STR1## where n is 4 or 5; X is from 0.03 to 0.30 and Ar is a radical selected from 3,4'-oxydiphenylene, 4,4'-oxydiphenylene, 4,4'-sulfonyldiphenylene, 1,3-phenylene, 1-methyl-2,4-phenylene, and mixtures of such radicals with each other or mixtures of such radicals with up to 50 mol percent of 1,4-phenylene radicals based on the mixtures of radicals.

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