Perlited Portland cement plaster joint compound additive...

Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing

Reexamination Certificate

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C106S675000, C106S735000, C106S772000, C106S783000, C106S784000, C106S788000, C106S816000

Reexamination Certificate

active

06902614

ABSTRACT:
A composition and method for treating a surface is described. In one embodiment, the composition comprises about 10% to 90% by weight of cement, about 10% to 90% by weight of plaster, about 0.01% to about 20% by weight of lime, and about 0% to about 30% by weight of perlite. In another embodiment, the composition comprises plaster, cement, perlite, lime, joint compound and water, wherein the plaster, cement, perlite, and lime are in a ratio of about 10-90: 10-90: 0-30: 0.01-20 by weight. In another embodiment, the composition is prepared by a method comprising:(a) providing a first mixture comprising plaster, cement, perlite, and lime;(b) converting the first mixture to a second mixture by a method selected from the group consisting of stirring the first mixture, passing the first mixture through a strainer, and milling the first mixture; and(c) mixing the second mixture with joint compound and water to obtain the composition.

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