Starch derivatives
AssigneeArbrook, Inc.
InventorsJohn Francis Fox, Thomas William Roylance, Angus Campbell Mair
Life of this patent
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Abstract
Starch, in a form so it is absorbable by body tissues and especially suitable for use as a medical dusting powder or lubricant for surgical gloves, is obtained by treating a substituted polysaccharide such as etherified vegetable starch with an acid or alkaline material and heating until it has a reducing power of at least 15 R.sub.Cu units, and then optionally is sterilized with gamma-irradiation thereby raising the reducing power to at least 65 R.sub.Cu units.
Claims15
A starch derivative absorbable by body tissues comprising the product of treating an etherified starch with an acid medium of pH 6 or below or with an alkaline medium of pH 8 or above and subjecting the treated material to a temperature of from about 80.degree. to about 100.degree. C for time sufficient to produce a product exhibiting a reducing power of at least 15 R.sub.Cu units.
A method of manufacturing a starch derivative that is absorbable by body tissues, which comprises treating a substituted starch with an acid medium of pH 6 or below or with an alkaline medium of pH 8 or above and subjecting the treated material to an elevated temperature of from about 80.degree. C to about 100.degree. C for time sufficient to produce a product exhibiting a reducing power of at least 15 R.sub.Cu units.
Dependencies are inferred from the claim text.