Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-03-06
1979-02-27
Schain, Howard E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
210 38B, C08H 106
Patent
active
041418883
ABSTRACT:
A process for producing a reduced keratinous substance having a high adsorptive power for cationic substances, which comprises reducing a substance containing keratin as a main ingredient under alkaline conditions to cleave the disulfide linkages of the keratin, dissolving the reduced keratin in an aqueous medium containing urea or thiourea in a concentration of less than 5 moles/liter, and then acidifying the resulting solution to precipitate the dissolved reduced keratin under such conditions that the thiol side-chains present in the reduced keratin do not substantially undergo oxidation. The reduced keratinous substance is especially useful as a heavy metal ion capturing agent.
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Chem. Abstracts, vol. 47, 1953, 1464i-1465a, Woods.
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Inagaki Hiroshi
Kikyotani Sho
Matsuda Hisayuki
Shinoda Katsuro
Takahashi Minoru
Schain Howard E.
Sekisui Kagaku Kogyo Kabushiki Kaisha
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