Lightweight joint compound containing stable air pockets

Details Lightweight joint compound containing stable air pockets Lightweight joint compound containing stable air pockets

2005-08-30

2005-08-30

Lorengo, J. A. (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

C106S672000, C106S675000, C106S677000, C106S698000, C106S801000, C106S814000, C524S426000

Reexamination Certificate

active

06936099

ABSTRACT:
Low density joint compounds, and methods for their use are disclosed. Joint compounds comprising water, calcium carbonate, a foaming agent, and a rheology modification agent contain a plurality of stable air bubbles. Joint compounds can have densities of about 4 pounds per gallon to about 8 pounds per gallon. A presently prepared composition has a density of about 4.8 pounds per gallon. A presently preferred foaming agent is a polyether siloxane copolymer. A presently preferred rheology modification agent is poly(ethylene oxide). The joint compounds can comprise additional components such as perlite, mica, talc, preservatives, and latex.

REFERENCES:
patent: 4454267 (1984-06-01), Williams
patent: 4657594 (1987-04-01), Struss
patent: 4686253 (1987-08-01), Struss et al.
patent: 5653797 (1997-08-01), Patel
patent: 6476099 (2002-11-01), Cimaglio et al.
patent: 6545066 (2003-04-01), Immordino et al.
patent: 6790277 (2004-09-01), Ayambem

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