Water-resistant products using a wax emulsion
View Patent ↗Embodiments of the present disclosure are directed to water-resistant products which contain a wax emulsion, or silicones, or siliconates, or fluorinated compounds, or stearates, or combinations thereof. In some embodiments, the compound can be used to provide enhanced moisture resistance to joints, or holes such as screw holes or nail holes, in a wallboard.
1. A water-resistant joint compound comprising:
water;
a preservative;
a wax emulsion wherein the wax emulsion comprises paraffin wax, montan wax, caranuba wax, sunflower wax, rice wax, tallow wax, synthetic wax, wax containing organic acids, wax containing esters, or combinations thereof;
at least one silicone, siliconate, fluorinated compound, stearate, or combinations thereof; and the wax emulsion is stabilized with polyvinyl alcohol and wherein the joint compound has a contact angle of about 60 to about 130 degrees; a pH below 12; and a Cobb value of about 1.0 to about 200 grams per square meter.
2. The joint compound of claim 1 , wherein the joint compound comprises:
about 20 to about 55 wt. % water;
about 0.02 to about 1.0 wt. % preservatives;
about 0.1 to about 20 wt. % wax emulsion; and further comprises
about 10 to about 50 wt. calcium carbonate;
about 0.0 to about 10 wt. % mica;
about 0.0 to about 10 wt. % attapulgite clay;
about 0.0 to about 10 wt. % talc;
about 0.0 to about 40 wt. % perlite;
about 0.0 to about 10 wt. % polyethylene oxide;
about 0.0 to about 10 wt. % polyether siloxane;
about 0.5 to about 10 wt. % latex binder; and
about 0.1 to about 8.0 wt. % cellulose ether thickener.
3. The joint compound of claim 1 , wherein the joint compound further comprises a rheology modifier, a binder, a thickener, and a filler.
4. The joint compound of claim 1 , wherein the joint compound further comprises calcium carbonate, cristobalite, a micro-roughened filler, gypsum, mica, clay, thickener, a latex binder, talc, perlite, expanded perlite, or combinations thereof.
5. The join compound of claim 1 , wherein ihe joint compound comprises the wax emulsion comprising:
water;
polyvinyl alcohol;
paraffin wax, or montan wax, or synthetic wax, or combinations thereof;
a base; and
a dispersant.
6. The joint compound of claim 1 , wherein the wax emulsion comprises synthetic wax at about 0.1% to about 8% of the joint compound.
7. The joint compound of claim 1 , wherein the joint compound has a pH below 9.
8. The joint compound of claim 1 , wherein the joint compound has a contact angle of about 90 to about 130 degrees.
9. The joint compound of claim 8 , wherein the joint compound is hydrophobic and has a contact angle of about 110 to about 130 degrees.
10. The joint compound of claim 1 , wherein the joint compound has a Cobb value of about 5.0 to about 200 grams per square meter.
11. The joint compound of claim 10 , wherein the joint compound has a Cobb value of about 65 grams per square meter.
12. The joint compound of claim 1 , wherein the joint compound further comprises surface micro-roughened fillers.
13. The joint compound of claim 1 , wherein the joint compound comprises the wax at about 0.5% to about 4% of the joint compound dry weight.
14. The joint compound of claim 3 , wherein the thickener comprises cellulose ether.
15. The joint compound of claim 5 , wherein the base is monethanol amine, diethanol amine, triethanol amine, imidazole, or potassium siliconate.
16. The joint compound of claim 5 , wherein the dispersant is a lignosulfonate.