Porous spherical cellulose acetate particles

Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter

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428403, B32B 514, B32B 516, B32B 900

Patent

active

045513899

ABSTRACT:
Cellulose acetate is formed into porous, spherical particles, having an acetylation degree of 49 to 60%, a particle diameter of 0.05 to 10 mm, a sphericity of 0.7 or larger, a pore volume of 0.4 cc/g or larger and a collapsing strength of 9 kg or higher.

REFERENCES:
patent: 3837989 (1974-09-01), McCoy

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