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US 4,359,341 AGranted
Starch based adhesives and method therefor
AssigneeHarper-Love Adhesives Corporation
InventorLeon A. Allen
Life of this patent
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AssigneeHarper-Love Adhesives Corporation
InventorLeon A. Allen
Estimating the term…
A process for preparing a carrier type starch which is characterized by the steps of mixing two starch portions having different gelatinization temperatures with water to form a slurry and causing gelatinization of the starch portion having the lower gelatinization temperature to thereby form a stable gelatinized carrier for the raw starch portion having the higher gelatinization temperature. The ratio of the starch portion having the lower gelatinization temperature to the starch portion having the higher gelatinization temperature is preferably of the order of from 1:10 to 1:4 and the ratio by weight of the starch portions to water is of the order of from 1:2 to 1:4, preferably about 1:3. A carrier type starch based adhesive comprising a mixture of a gelatinized carrier starch portion and a raw starch portion having a higher gelatinization temperature dispersed in the carrier portion is also disclosed.
A process for preparing a carrier-type starch adhesive comprising the steps of:
A process for preparing a carrier-type starch adhesive comprising the steps of:
A carrier type starch based adhesive prepared by the process comprising the steps of:
Dependencies are inferred from the claim text.