WO2007027530A3 - Modified landplaster as a wallboard filler - Google Patents

Modified landplaster as a wallboard filler Download PDF

Info

Publication number
WO2007027530A3
WO2007027530A3 PCT/US2006/033297 US2006033297W WO2007027530A3 WO 2007027530 A3 WO2007027530 A3 WO 2007027530A3 US 2006033297 W US2006033297 W US 2006033297W WO 2007027530 A3 WO2007027530 A3 WO 2007027530A3
Authority
WO
WIPO (PCT)
Prior art keywords
calcium sulfate
gypsum slurry
sulfate hemihydrate
hydrophilic
coating
Prior art date
Application number
PCT/US2006/033297
Other languages
French (fr)
Other versions
WO2007027530A2 (en
Inventor
David R Blackburn
Qingxia Liu
Michael P Shake
Original Assignee
United States Gypsum Co
David R Blackburn
Qingxia Liu
Michael P Shake
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
Priority claimed from US11/217,039 external-priority patent/US20070044687A1/en
Application filed by United States Gypsum Co, David R Blackburn, Qingxia Liu, Michael P Shake filed Critical United States Gypsum Co
Priority to NZ566055A priority Critical patent/NZ566055A/en
Priority to EP06813785A priority patent/EP1928652A2/en
Priority to BRPI0617056-0A priority patent/BRPI0617056A2/en
Priority to AU2006285062A priority patent/AU2006285062B2/en
Priority to CA2619960A priority patent/CA2619960C/en
Priority to JP2008529135A priority patent/JP2009505942A/en
Publication of WO2007027530A2 publication Critical patent/WO2007027530A2/en
Publication of WO2007027530A3 publication Critical patent/WO2007027530A3/en
Priority to IL189535A priority patent/IL189535A0/en
Priority to NO20081553A priority patent/NO20081553L/en

Links

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
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • 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
    • C04B2111/52—Sound-insulating materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Dairy Products (AREA)

Abstract

A gypsum slurry includes calcium sulfate hemihydrate, water and calcium sulfate dihydrate is coated with a hydrophilic, dispersible coating. The coating is less soluble than the calcium sulfate hemihydrate to delay exposure of the landplaster to the remainder of the slurry, preventing premature crystallization and the early stiffening that accompanies it. Another embodiment is a gypsum slurry that includes calcium sulfate hemihydrate, a polycarboxylate dispersant, water and coated calcium sulfate dihydrate. In this case, the hydrophilic, dispersible coating is selected to serve as a modifier to enhance the ability of the dispersant to fluidize the gypsum slurry.
PCT/US2006/033297 2005-08-31 2006-08-25 Modified landplaster as a wallboard filler WO2007027530A2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NZ566055A NZ566055A (en) 2005-08-31 2006-08-25 Modified landplaster as a wallboard filler
EP06813785A EP1928652A2 (en) 2005-08-31 2006-08-25 Modified landplaster as a wallboard filler
BRPI0617056-0A BRPI0617056A2 (en) 2005-08-31 2006-08-25 modified plaster as a sheet filler
AU2006285062A AU2006285062B2 (en) 2005-08-31 2006-08-25 Modified landplaster as a wallboard filler
CA2619960A CA2619960C (en) 2005-08-31 2006-08-25 Modified landplaster as a wallboard filler
JP2008529135A JP2009505942A (en) 2005-08-31 2006-08-25 Modified powder gypsum as wallboard filler
IL189535A IL189535A0 (en) 2005-08-31 2008-02-14 Modified landplaster as a wallboard filler
NO20081553A NO20081553L (en) 2005-08-31 2008-03-28 Modified lime fertilizer as a wall plate filler

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/217,039 US20070044687A1 (en) 2005-08-31 2005-08-31 Modified landplaster as a wallboard filler
US11/217,039 2005-08-31
US11/490,150 US7601214B2 (en) 2005-08-31 2006-07-20 Modified landplaster as a wallboard filler
US11/490,150 2006-07-20

Publications (2)

Publication Number Publication Date
WO2007027530A2 WO2007027530A2 (en) 2007-03-08
WO2007027530A3 true WO2007027530A3 (en) 2007-06-28

Family

ID=37809386

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/033297 WO2007027530A2 (en) 2005-08-31 2006-08-25 Modified landplaster as a wallboard filler

Country Status (5)

Country Link
EP (1) EP1928652A2 (en)
AR (1) AR055626A1 (en)
AU (1) AU2006285062B2 (en)
CA (1) CA2619960C (en)
WO (1) WO2007027530A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8563139B2 (en) 2008-04-22 2013-10-22 United States Gypsum Company Non-hydrating plaster composition and method
FR2948933B1 (en) * 2009-08-05 2013-05-10 Lafarge Sa PROTECTION OF A DISPERSANT AGAINST HIGH TEMPERATURES
US10309771B2 (en) 2015-06-11 2019-06-04 United States Gypsum Company System and method for determining facer surface smoothness
US10207475B2 (en) 2016-05-13 2019-02-19 United States Gypsum Company Mat-faced board

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078199A (en) * 1936-10-02 1937-04-20 United States Gypsum Co Heatproofed set-stabilized gypsum plaster
US3997692A (en) * 1974-09-16 1976-12-14 Lever Brothers Company Process of coating calcium sulfate dihydrate detergent filler particles
US4681644A (en) * 1985-09-27 1987-07-21 Usg Corporation Accelerator for gypsum plaster and process of manufacture
US6379458B1 (en) * 2000-02-11 2002-04-30 United States Gypsum Company Efficient set accelerator for plaster
US6641658B1 (en) * 2002-07-03 2003-11-04 United States Gypsum Company Rapid setting cementitious composition
US6902797B2 (en) * 2002-11-12 2005-06-07 Innovative Construction And Building Materials Gypsum-based composite materials reinforced by cellulose ethers
US20050150427A1 (en) * 2004-01-12 2005-07-14 United States Gypsum Company Surface enhancing coating for gypsum-containing floor underlayments
US20050250888A1 (en) * 2002-03-27 2005-11-10 Lettkeman Dennis M High strength flooring compositions

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078199A (en) * 1936-10-02 1937-04-20 United States Gypsum Co Heatproofed set-stabilized gypsum plaster
US3997692A (en) * 1974-09-16 1976-12-14 Lever Brothers Company Process of coating calcium sulfate dihydrate detergent filler particles
US4681644A (en) * 1985-09-27 1987-07-21 Usg Corporation Accelerator for gypsum plaster and process of manufacture
US6379458B1 (en) * 2000-02-11 2002-04-30 United States Gypsum Company Efficient set accelerator for plaster
US20050250888A1 (en) * 2002-03-27 2005-11-10 Lettkeman Dennis M High strength flooring compositions
US6641658B1 (en) * 2002-07-03 2003-11-04 United States Gypsum Company Rapid setting cementitious composition
US6902797B2 (en) * 2002-11-12 2005-06-07 Innovative Construction And Building Materials Gypsum-based composite materials reinforced by cellulose ethers
US20050150427A1 (en) * 2004-01-12 2005-07-14 United States Gypsum Company Surface enhancing coating for gypsum-containing floor underlayments

Also Published As

Publication number Publication date
CA2619960A1 (en) 2007-03-08
AU2006285062B2 (en) 2010-09-09
AR055626A1 (en) 2007-08-29
AU2006285062A1 (en) 2007-03-08
CA2619960C (en) 2014-11-04
EP1928652A2 (en) 2008-06-11
WO2007027530A2 (en) 2007-03-08

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