Drug – bio-affecting and body treating compositions – Lymphokine
Patent
1983-05-24
1985-06-18
Schenkman, Leonard
Drug, bio-affecting and body treating compositions
Lymphokine
424 78, 514778, 514779, 514781, 514782, 514783, 514944, A61K 3174, A61K 3178
Patent
active
045240647
ABSTRACT:
Provided is a wound covering material produced by applying an aqueous solution containing a polyvinyl alcohol with a degree of hydrolysis not less than 95 mol. % and a viscosity-average degree of polymerization not less than 1,500, a water-soluble C.sub.2-20 polyhydric alcohol having 2-8 hydroxyl groups in the molecule and a high-viscosity water-soluble macromolecular substance being different from polyvinyl alcohol with a viscosity of the 2% aqueous solution of 25.degree. C. not less than 300 cP, concentrations of said polyvinyl alcohol, said water-soluble polyhydric alcohol and said water-soluble macromolecular substance being adjusted respectively to 1.5-8% by weight, 10-85% by weight and 0.2-15% by weight, onto a flat or curved plate having 30,000-200,000 projections per m.sup.2, the total area occupied by the projections being 10-70% to a thickness from 0.5 to 5 mm, cooling the applied plate to a temperature not higher than -6.degree. C. to solidify the solution and then subjecting the resulting mass to vacuum dehydration to a ratio of dehydration from 5% by weight to 95% by weight.
REFERENCES:
patent: 4010259 (1977-03-01), Johansson
patent: 4272518 (1981-06-01), Moro et al.
Nippon Oil Company Limited
Schenkman Leonard
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