Water resistant high amylose corrugating adhesive with improved runnability
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorsMichael T. Foran, Craig H. Leake, Michael T. Philbin, Peter T. Trzasko
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Abstract
A water resistant, starch-based, alkaline corrugating adhesive is provided having improved tack or runnability and comprises using a chemically treated or modified high amylose starch having at least 40% by weight amylose content as the raw starch component.
Claims18
In a water resistant alkaline curing corrugating adhesive having improved tack and green bond strength and comprising an aqueous dispersion of a gelatinized carrier and an ungelatinized raw starch component, the improvement comprising using a chemically treated or modified high amylose starch having at least 40% by weight amylose content as the raw starch component.
A starch-based, water resistant alkaline curing corrugating adhesive comprising:
- a) from about 10 to 50% by weight, based on the weight of the composition, of starch including the ungelatinized raw and gelatinized carrier portions of the starch,
- b) from about 0.3 to 5% by weight, based on the weight of the starch, of an alkali, and
- c) from about 40 to 90% by weight, based on the weight of the composition, of water, wherein the raw starch is a chemically treated or modified high amylose starch having at least 40% by weight amylose content.
Dependencies are inferred from the claim text.