C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 31/02 (2006.01)
Patent
CA 2146714
The invention relates to a process for purifying fullerenes which are in the form of a pulverized solid having a purity of at least 90 % by weight, which com- prises suspending the pulverized solid in a nonpolar organic medium and washing it therewith, filtering the suspension and isolating the filtration residue.
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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