UREA-FORMALDEHYDE RESIN REINFORCED GYPSUM COMPOSITES AND BUILDING MATERIALS MADE THEREFROM
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United States of America Patent
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Issued Date -
Aug 4, 2011
app pub date -
Sep 8, 2010
filing date -
Feb 18, 2008
priority date (Note) -
Abandoned
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Abstract
A composite material containing wet chopped strand fibers, gypsum, and a polymer material is provided. The wet fibers are filamentized within the polymer material. In exemplary embodiments, the wet chopped strand fibers are wet-used chopped strand glass fibers. The gypsum may be α-gypsum, β-gypsum, or combinations thereof. In at least one embodiment, the polymer is a urea-formaldehyde resin. The composite material may contain a facing layer on at least one exposed major surface of the composite material. A method of forming a composite material that includes mixing gypsum with a polymer material to form a substantially homogeneous matrix and adding a sufficient quantity of wet-used chopped strand fibers to form the composite material is also provided.
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