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US 2024/0376009 A1Published application
Gypsum Board with Improved Starch Binder
AssigneeGold Bond Building Products, LLC
InventorsEli Stav, Ma-Ikay Miatudila
Life of this patent
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Abstract
Gypsum board having improved performance is obtained by controlling the distribution of starch in the gypsum core of the board and the gelling temperature of the starch. Starch migration in the board is controlled by the degree of acid-modification, to adjust the starch viscosity profile. The starch gelling temperature is controlled by chemical modification of the starch —OH groups.
Claims18
A gypsum board, comprising:
- a gypsum core formed from a gypsum slurry having a composition comprising stucco, a starch, and an aqueous foam,
- wherein the starch comprises an unmodified starch and a chemically modified starch, an acid modified starch, or a mixture thereof.
Dependencies are inferred from the claim text.