Back to results
US 5,288,775 AGranted
Moldable building material composites
AssigneeFiberstone Quarries, Inc.
InventorsRobert K. Bischoff, Eugene A. Witzleben
Life of this patent
Estimating the term…
Abstract
Acrylic polymer composites which are moldable to form building veneers, panels, facades, decorative trims, planters and the like which include natural cellulose fibers, alpha-gypsum, melamine resin, hardening agents, inert fillers and water.
Claims20
Moldable structural building material composite comprising:
- an acrylic polymer emulsion including 30-70% polymer solids in solution, said polymer emulsion being present in the composite in an amount between approximately 19 to 35%, by weight;
- an alpha-gypsum present in the composite in an amount between approximately 35 to 71%, by weight;
- natural cellulose fibers present in the composite in an amount of between approximately 3 to 15%, by dry weight of the fiber;
- and
- water in an amount of between approximately 200-400%, by weight of the fibers.
2 more elements
A moldable structural building material composite comprising:
- an acrylic polymer emulsion including 30-70% polymer solids in a water base solution, said polymer emulsion being present in the composite in an amount between approximately 19 to 35%, by weight;
- an alpha-gypsum present in the composite in an amount between approximately 35 to 71%, by weight;
- a melamine resin present in an amount of up to approximately 10%, by weight of the composite;
- a hardening agent present in the composite in an amount of at least approximately 5.0%, by weight of the melamine resin;
- natural cellular fibers present in the composite in an amount of between approximately 3 to 15%, by dry weight of the fiber;
- a non-reactive filler;
- and
- water in an amount of between approximately 200-400%, by weight of the fiber.
5 more elements
Dependencies are inferred from the claim text.