Manufacture of polyvinylpyrrolidone-iodine

Details Manufacture of polyvinylpyrrolidone-iodine Manufacture of polyvinylpyrrolidone-iodine

C - Chemistry, Metallurgy

08

F

402/480

C08F 126/10 (2006.01) C08F 8/22 (2006.01)

Patent

CA 1079443

ABSTRACT OF THE DISCLOSURE: A process for the manufacture of polyvinylpyrrolidone- iodine from polyvinyl pyrrolidone and iodine which comprises: -the free radical polymerization of vinylpyrrolidone in a anhydrous organic solvent selected from the group consisting of aromatic hydrocarbons, lower aliphatic monohydric alcohols of 1 to 4 carbon atoms, in the presence of free radicals supplied by an organic per-compound in an amount of about 0.5 to 5% by weight on the basis of the weight of the vinylpyrrolidone; -mixing the resulting polyvinylpyrrolidone in the form of a powder having a K value of from 10 to 50 and a water content of from 0.5 to 11% by weight with iodine in an amount of about 5 to 25% based on the total weight of the polyvinylpyrrolidone- iodine, at about room temperature up to about 50°C and, -heating the resulting mixture for about 5 to 20 hours at about 70 to 100°C.

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