Process for preparing porous spherical cellulose particles

Details Process for preparing porous spherical cellulose particles Process for preparing porous spherical cellulose particles

1981-07-21

1983-06-28

Griffin, Ronald W.

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

Organic compounds

Carbohydrates or derivatives

536 68, 536 76, 536 79, 536 80, 536 81, 536 82, C08B 306, C08B 308, C08B 316, C08B 318

Patent

active

043906915

ABSTRACT:
A process for preparing porous, spherical cellulose particles which comprises suspending a cellulose organic ester solution dissolved in a chlorinated hydrocarbon solvent into an aqueous medium to form droplets of the solution, evaporating the chlorinated hydrocarbon solvent in the droplets to form cellulose organic ester spherical particles, and saponifying the cellulose organic ester spherical particles. In the aforesaid process, an acid or alkali is added and mixed with the cellulose organic ester solution prior to suspending the cellulose organic ester solution into the aqueous medium to control the porosity of the porous, spherical cellulose particles with high reproducibility.

REFERENCES:
patent: 2872331 (1959-02-01), Grady et al.
patent: 3444286 (1969-05-01), King et al.
patent: 3557083 (1971-01-01), Sacco
patent: 3560232 (1971-02-01), Littman
patent: 4239545 (1980-12-01), Uemura et al.
patent: 4312980 (1982-01-01), Motozato et al.

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