Adhesive bonding and miscellaneous chemical manufacture – Methods – Plaster board making
Reexamination Certificate
2007-05-16
2008-07-01
Marcantoni, Paul (Department: 1793)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Plaster board making
C156S045000, C264S333000, C052S443000, C106S772000, C106S778000
Reexamination Certificate
active
07393424
ABSTRACT:
A gypsum composition comprising water, stucco, clay, an amine compound, a polyoxyalkylene, and a comb-branched copolymer is disclosed. The gypsum composition has improved fluidity. A method for preparing the gypsum composition is also disclosed. The method comprises mixing the components to form a slurry, casting the slurry into a product, and drying the product.
REFERENCES:
patent: 6527850 (2003-03-01), Schwartz et al.
patent: 6670415 (2003-12-01), Jardine et al.
patent: 6869988 (2005-03-01), Schwartz et al.
patent: 7070648 (2006-07-01), Schwartz et al.
Arrell Robert M.
Lee Sallie J.
Liotta, Jr. Frank J.
Schwartz Steven A.
Guo Shao-Hua
Lyondell Chemical Technology, L.P.
Marcantoni Paul
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