METHOD FOR INHIBITING FORMATION OF GYPSUM SEEDS IN A READY-MIXED SETTING TYPE JOINT COMPOUND

A ready-mixed setting type joint compound in which formation of gypsum seeds has been inhibited. A method for controlling a setting reaction by mixing a ready-mixed setting type joint compound with one or more metal ion control agents comprising aminopolycarboxylic acid and/or a salt thereof, and fu...

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Bibliographische Detailangaben
Hauptverfasser: SCHLUDE, Joseph, ROSENTHAL, Guy L, KINCAID, Tyler, MILLER, Charles J
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A ready-mixed setting type joint compound in which formation of gypsum seeds has been inhibited. A method for controlling a setting reaction by mixing a ready-mixed setting type joint compound with one or more metal ion control agents comprising aminopolycarboxylic acid and/or a salt thereof, and further mixing the setting type joint compound with one or more non-calcium phosphate compounds. The method may further comprise mixing the setting type joint compound with a set activator obtained by blending together a first set activator including a cadmium compound, lead compound and/or zinc compound and a second set activator including a ferrous compound, aluminum compound and/or manganese compound.