Method of making a gypsum slurry with modifiers and dispersants

Details Method of making a gypsum slurry with modifiers and dispersants Method of making a gypsum slurry with modifiers and dispersants

2006-06-09

2009-08-11

Marcantoni, Paul (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

C524S004000, C524S005000, C264S333000

Reexamination Certificate

active

07572329

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.

REFERENCES:
patent: 4028125 (1977-06-01), Martin
patent: 4202857 (1980-05-01), Lowe
patent: 4238239 (1980-12-01), Brown
patent: 4341560 (1982-07-01), Saito et al.
patent: 4561986 (1985-12-01), Villa et al.
patent: 4666971 (1987-05-01), Greenhalgh
patent: 4814014 (1989-03-01), Arfaei
patent: 4927463 (1990-05-01), Kloetzer et al.
patent: 4960465 (1990-10-01), Arfaei
patent: 5109030 (1992-04-01), Chao et al.
patent: 5118751 (1992-06-01), Schulze et al.
patent: 5223036 (1993-06-01), Koyata et al.
patent: 5286412 (1994-02-01), Northey et al.
patent: 5362323 (1994-11-01), Koyata et al.
patent: 5369198 (1994-11-01), Albrecht et al.
patent: 5387626 (1995-02-01), Bohme-Kovac et al.
patent: 5393343 (1995-02-01), Darwin et al.
patent: 5401798 (1995-03-01), Rasp et al.
patent: 5424099 (1995-06-01), Stewart et al.
patent: 5556460 (1996-09-01), Berke et al.
patent: 5614017 (1997-03-01), Shawl
patent: 5643978 (1997-07-01), Darwin et al.
patent: 5661206 (1997-08-01), Tanaka et al.
patent: 5670578 (1997-09-01), Shawl
patent: 5685903 (1997-11-01), Stav et al.
patent: 5703174 (1997-12-01), Arfaei et al.
patent: 5725656 (1998-03-01), Shimanovich et al.
patent: 5725657 (1998-03-01), Darwin et al.
patent: 5739212 (1998-04-01), Wutz et al.
patent: 5779786 (1998-07-01), Patel
patent: 5798425 (1998-08-01), Albrecht et al.
patent: 5834576 (1998-11-01), Nagano et al.
patent: 5858083 (1999-01-01), Stav et al.
patent: 5925184 (1999-07-01), Hirata et al.
patent: 5985989 (1999-11-01), Shawl et al.
patent: 6034208 (2000-03-01), McDaniel et al.
patent: 6043329 (2000-03-01), Lepori et al.
patent: 6150437 (2000-11-01), Wutz et al.
patent: 6166112 (2000-12-01), Hirata et al.
patent: 6187887 (2001-02-01), Albrecht et al.
patent: 6211317 (2001-04-01), Albrecht et al.
patent: 6264739 (2001-07-01), Yamoto et al.
patent: 6281307 (2001-08-01), Muhlebach et al.
patent: 6294015 (2001-09-01), Yamashita et al.
patent: 6376581 (2002-04-01), Tanaka et al.
patent: 6527850 (2003-03-01), Schwartz et al.
patent: 6620879 (2003-09-01), Albrecht et al.
patent: 6800129 (2004-10-01), Jardine et al.
patent: 6852159 (2005-02-01), Kinoshita et al.
patent: 6929875 (2005-08-01), Savoly et al.
patent: 2003/0019401 (2003-01-01), Schwartz et al.
patent: 2003/0127026 (2003-07-01), Anderson et al.
patent: 2003/0167973 (2003-09-01), Peev et al.
patent: 2004/0045481 (2004-03-01), Sethuraman et al.
patent: 2004/0072939 (2004-04-01), Cornman et al.
patent: 2004/0149172 (2004-08-01), Jardine et al.
patent: 2004/0149174 (2004-08-01), Farrington et al.
patent: 2004/0170873 (2004-09-01), Smith
patent: 2004/0198873 (2004-10-01), Bury et al.
patent: 2004/0211342 (2004-10-01), Sprouts et al.
patent: 2005/0045069 (2005-03-01), McCarthy et al.
patent: 2006/0278134 (2006-12-01), Lettkeman et al.
patent: 2006/0280899 (2006-12-01), Liu et al.
patent: 2008/0009565 (2008-01-01), Wittbold et al.
patent: 2008/0148997 (2008-06-01), Blackburn et al.
patent: 0644165 (1995-03-01), None
patent: 0725044 (1996-08-01), None
patent: 56045857 (1981-04-01), None
patent: 59025876 (1984-02-01), None
patent: 61040861 (1986-02-01), None
patent: WO 9533698 (1995-12-01), None
patent: WO 0181263 (2001-11-01), None
patent: WO 03/082765 (2003-10-01), None
patent: WO 03/082766 (2003-10-01), None

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