High starch light weight gypsum wallboard

Details High starch light weight gypsum wallboard High starch light weight gypsum wallboard

2006-06-07

2010-06-08

Marcantoni, Paul (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

C106S778000, C428S400000, C052S443000, C156S039000

Reexamination Certificate

active

07731794

ABSTRACT:
The invention generally provides gypsum-containing slurries including stucco, naphthalenesulfonate dispersant, and pregelatinized starch. The naphthalenesulfonate dispersant is present in an amount of about 0.1%-3.0% by weight based on the weight of dry stucco. The pregelatinized starch is present in an amount of at least about 0.5% by weight up to about 10% by weight of pregelatinized starch by weight based on the weight of dry stucco in the formulation. Other slurry additives can include trimetaphosphate salts, accelerators, binders, paper fiber, glass fiber, and other known ingredients. The invention also comprises the gypsum-containing products made with such slurries, for example, gypsum wallboard, and a method of making gypsum wallboard.

REFERENCES:
patent: 1702729 (1929-02-01), Hite
patent: 3573947 (1971-04-01), Kinkade
patent: 4184887 (1980-01-01), Lange et al.
patent: 4237260 (1980-12-01), Lange et al.
patent: 4392896 (1983-07-01), Sakakibara
patent: 5575844 (1996-11-01), Bradshaw
patent: 6340388 (2002-01-01), Luongo
patent: 6342284 (2002-01-01), Yu et al.
patent: 6387172 (2002-05-01), Yu et al.
patent: 6398864 (2002-06-01), Przybysz et al.
patent: 6406537 (2002-06-01), Immordino
patent: 6409819 (2002-06-01), Ko
patent: 6409825 (2002-06-01), Yu et al.
patent: 6481171 (2002-11-01), Yu et al.
patent: 6572698 (2003-06-01), Ko
patent: 6632550 (2003-10-01), Yu et al.
patent: 6774146 (2004-08-01), Savoly et al.
patent: 6783587 (2004-08-01), Sethuraman et al.
patent: 6800131 (2004-10-01), Yu et al.
patent: 6832652 (2004-12-01), Dillenbeck et al.
patent: 7425236 (2008-09-01), Yu et al.
patent: 7455728 (2008-11-01), Losch et al.
patent: 2003/0084980 (2003-05-01), Seufert et al.
patent: 2004/0026002 (2004-02-01), Weldon et al.
patent: 2004/0092625 (2004-05-01), Pollock et al.
patent: 2004/0231916 (2004-11-01), Englert et al.
patent: 2005/0223949 (2005-10-01), Bailey, Jr. et al.
patent: WO 01/45932 (2001-06-01), None
EP 1008568 (Jun. 14, 2000) Reisch et al. abstract only.
CN 1396138 (Feb. 12, 2003) Li et al. abstract only.
AT 406048 (Jan. 25, 2000) Cement Intellectual Property Ltd Bermuda abstract only.
CN 1238312 (Dec. 15, 1999) Cao abstract only.
EP 335405 (Oct. 4, 1989) Contento et al. abstract only.
FR 2673620 (Sep. 11, 1992) Boussouria et al. abstract only.
DE 4316518 (Nov. 24, 1994) Riemann et al. abstract only.
NO 126524 (Feb. 19, 1973) Pran abstract only.
“Standard Test Methods for Physical Testing of Gypsum Panel Products”,Annual Book of ASTM Standards, Designations: C 473-97, vol. 04.01 1998, pp. 253-264.
Diloflo® GW Products Bulletin, “Polynaphthalene Sulfonate, Sodium Salt”, GEO Specialty Chemicals, Horsham, PA (Nov. 1999).

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