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AssigneeUnited States Gypsum Company
InventorsSrinivas Veeramasuneni, Qiang Yu, Michael P. Shake
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A set gypsum-containing composition is disclosed. In one aspect, the set gypsum-containing composition includes an interlocking matrix of the set gypsum formed from at least calcined gypsum, water, and an enhancing material. The enhancing material can be selected from (i) an organic polyphosphonic compound, or a mixture thereof; (ii) a borate selected from ulexite colemanite, or a mixture thereof; or a mixture of (i) and (ii). In another aspect, the set gypsum-containing composition is treated with an enhancing material which can be selected from (i) an organic phosphonic compound or a mixture thereof; (ii) a borate selected from ulexite, colemanite, or a mixture thereof; (iii) a carboxylic compound or a mixture thereof; or a mixture of (i), (ii) and/or (iii).
A set gypsum-containing composition comprising an interlocking matrix of the set gypsum formed from at least calcined gypsum, water, and an enhancing material comprising a borate comprising ulexite, colemanite, or a mixture of ulexite and colemanite.
A gypsum board comprising an interlocking matrix of set gypsum formed from at least calcined gypsum, water, and an enhancing material comprising:
A set gypsum-containing composition comprising an interlocking matrix of set gypsum formed from at least calcined gypsum, water, and an enhancing material comprising:
A set gypsum-containing composition comprising an interlocking matrix of set gypsum wherein said set gypsum has been treated with a mixture of a liquid and an enhancing material comprising:
An accelerator for an aqueous calcined gypsum composition comprising a borate selected from the group consisting of ulexite, colemanite and a mixture of ulexite and colemanite, and an accelerator material.
A set gypsum-containing composition comprising an interlocking matrix of set gypsum formed from at least calcined gypsum, water, and an enhancing material comprising:
Dependencies are inferred from the claim text.