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US 7,128,780 B2Granted
Process for producing building materials from raw paint sludge
AssigneeE. I. Du Pont de Nemours and Company
InventorsRobert R. Matheson, Dennis M. Dixon, John R. Moore, David A. Fischer
Life of this patent
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Abstract
A process for producing building materials, such as asphalt, cement, concrete, mortar, or plaster board from liquid paint sludge containing water and paint solids produced from overspray in commercial paint booth operations. The preferred embodiment comprises adding the liquid paint sludge as the hydrating agent directly to the building material mix.
Claims13
A process for producing cement, concrete, asphalt, mortar or plaster building materials from liquid paint sludge, comprising:
- a. mixing liquid paint sludge with one of the group consisting of cement mix, concrete mix, asphalt mix, mortar mix, and plaster mix;
- and,
- b. allowing the mixture to harden, thereby producing a building material therefrom,
- wherein the liquid paint sludge is used directly as a hydrating agent for the building material.
1 more element
Dependencies are inferred from the claim text.