Snamprogetti S.p.a.

Silvio Gulinelli

Francesco Bartoli

Walter Marconi

Franco Morisi

Dino Dinelli

Delio Zaccardelli

A method is disclosed for embedding sequestering agents in filamentary structures, the method comprising the steps of preparing an emulsion formed by an aqueous or nearly aqueous solution of the sequestering agent and a solution of the filament-forming polymer in an appropriate solvent, and spinning the emulsion in a coagulation bath.

Method for occluding sequestering agents in filamentary structure,

High permeability cellulose fibers containing enzymes are formed by preparing a solution of nitrocellulose in a solvent that is insoluble in water, preparing an aqueous enzyme solution, mixing together the nitrocellulose and enzyme solutions and emulsifying the mixture, spinning the emulsion into a coagulating bath to produce fibers englobing enzymes and treating the fibers with a reducing agent under conditions which do not damage the enzymes so that nitro groups are removed from the nitrocellulose.

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Monterotondo, Italy

Silvio Gulinelli