WO2006138001A3 - Method of making a gypsum slurry with modifiers and dispersants - Google Patents

Method of making a gypsum slurry with modifiers and dispersants Download PDF

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Publication number
WO2006138001A3
WO2006138001A3 PCT/US2006/018127 US2006018127W WO2006138001A3 WO 2006138001 A3 WO2006138001 A3 WO 2006138001A3 US 2006018127 W US2006018127 W US 2006018127W WO 2006138001 A3 WO2006138001 A3 WO 2006138001A3
Authority
WO
WIPO (PCT)
Prior art keywords
slurry
stucco
modifier
dispersant
making
Prior art date
Application number
PCT/US2006/018127
Other languages
French (fr)
Other versions
WO2006138001A2 (en
Inventor
Quingxia Liu
Original Assignee
United States Gypsum Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United States Gypsum Co filed Critical United States Gypsum Co
Publication of WO2006138001A2 publication Critical patent/WO2006138001A2/en
Publication of WO2006138001A3 publication Critical patent/WO2006138001A3/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
    • C04B2111/0062—Gypsum-paper board like materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/60—Flooring materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/232—Encased layer derived from inorganic settable ingredient

Abstract

In a method of making a gypsum slurry, a polycarboxylate dispersant, a modifier and a hydraulic material comprising stucco are selected for use in the slurry. These components are then combined with water to form a slurry, where the modifier is added to the slurry prior to formation of a slurry phase by the water, the stucco and the dispersant. The modifier has been shown to be less effective when added after the dispersant and stucco have been contacted in an aqueous slurry. In a preferred embodiment, an amount of stucco is obtained and the modifier and dispersant are selected. A predissolved solution of a dispersant and modifier is prepared in water to form a solution prior to the addition of the stucco. After mixing the solution, the stucco is added to form the slurry. Optionally, the slurry is then shaped into a product and allowed to set.
PCT/US2006/018127 2005-06-14 2006-05-11 Method of making a gypsum slurry with modifiers and dispersants WO2006138001A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/152,323 2005-06-14
US11/152,323 US20060280899A1 (en) 2005-06-14 2005-06-14 Method of making a gypsum slurry with modifiers and dispersants

Publications (2)

Publication Number Publication Date
WO2006138001A2 WO2006138001A2 (en) 2006-12-28
WO2006138001A3 true WO2006138001A3 (en) 2009-04-09

Family

ID=37522960

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/018127 WO2006138001A2 (en) 2005-06-14 2006-05-11 Method of making a gypsum slurry with modifiers and dispersants

Country Status (12)

Country Link
US (2) US20060280899A1 (en)
JP (1) JP2008543616A (en)
CN (1) CN101193833A (en)
BR (1) BRPI0612107A2 (en)
IL (1) IL187212A0 (en)
MX (1) MX2007015966A (en)
NZ (1) NZ563199A (en)
RU (1) RU2417963C2 (en)
TW (1) TW200714568A (en)
UA (1) UA93876C2 (en)
WO (1) WO2006138001A2 (en)
ZA (1) ZA200710226B (en)

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US6632550B1 (en) * 1997-08-21 2003-10-14 United States Gypsum Company Gypsum-containing product having increased resistance to permanent deformation and method and composition for producing it
US20030084980A1 (en) * 2001-11-06 2003-05-08 Seufert James F Lightweight gypsum wallboard and method of making same

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