Sumitomo Chemical Company, Limited

Masahide Nakano

Hikoya Hayatsu

Yoshikazu Matsuo

Silica gel is treated with a reactive phthalocyanine compound to form the blue silica gel, which has a phthalocyanine skeleton linked through an organic group. Typically, a phthalocyanine reactive dye is used for the reaction with silica gel at its hydroxyl or other reactive site. The blue silica gel easily adsorbs and desorbs the polycyclic organic substances in a solution. The blue silica gel can be used for the separation or removal of the mutagenic substances from the environment, foodstuffs, etc.

Silica gel linked to a phthalocyanine compound and a method for treating

Mutagenic substances in solutions are selectively adsorbed by specific solid adsorbents bearing covalently bound phthalocyanine derivatives. The adsorbents are prepared by coupling the organic solid materials, for instance, cotton and cellulose powder, with phthalocyanine derivatives having chemically reactive terminal groups. Such reactive phthalocyanines are commercially available as phthalocyanine reactive dyes.

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Hirakata, Japan

Masahide Nakano