Ultra-lightweight, open-pore foamed cellulose materials with lar

Details Ultra-lightweight, open-pore foamed cellulose materials with lar Ultra-lightweight, open-pore foamed cellulose materials with lar

1991-04-05

1994-03-29

Griffin, Ronald W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 57, 106122, 422 56, 521 25, 521 61, C08B 100, C08L 1100

Patent

active

052986152

ABSTRACT:
An ultra-lightweight, open-pore foamed cellulose material with an increased surface area, having ion exchangeable functional groups introduced in it. The cellulose material presents a three-dimensional network structure which, upon swollen, has a particle diameter of 0.8 to 12.0 mm, a mean pore diameter of 0.1 to 1.7 mm, a specific surface area of 1.0 to 10.0 m.sup.2 /g, a true density of 1.4 to 1.6 g/cm.sup.3 and a porosity of 90% or greater. The ion exchangeable functional groups, for instance, may be cationic polyethyleneimine.

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