Wax emulsions for gypsum products
AssigneeHexion Specialty Chemicals, Inc.
InventorSteven J. Wantling
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Abstract
Emulsions, useful for imparting water resistance to gypsum products are disclosed. The emulsions of the invention include at least one wax, an alkyl phenol and a hydrophyllic metallic salt, preferably magnesium sulfate. The emulsions of the invention do not require the addition of a starch compound and therefore exhibit enhanced stability even at higher solids content then compared to prior art emulsions.
Claims20
An emulsion for providing water-resistance to a gypsum product comprising at least one wax, an alkyl phenol and magnesium sulfate.
A method for making an emulsion useful in providing water-resistance to a gypsum product, comprising the steps of
- (a) combining a first mixture comprising at least one wax and an alkyl phenol with a second mixture comprising magnesium sulfate and water,
- (b) combining the first mixture and the second mixture to form a resultant mixture, and
- (c) homogenizing the resultant mixture.
Dependencies are inferred from the claim text.