Textured grout composition, dispenser therefor, and method of use
View Patent ↗The invention relates to grout compositions that are suitable for packaging in pressurized containers. The compositions comprise a mineral filler that has average particle size greater than about 160 micrometers in which the mineral particles exhibit a Mohs hardness less than about 6.5.
1. A grout composition comprising
a) 20% to 40%, by weight, of first mineral filler particles having an average particle size in the range from 160 to 700 micrometers and a Mohs hardness less than 6.5;
b) 20% to 40%, by weight, of second mineral filler particles having an average particle size in the range from 90 to 120 micrometers; and
c) 20% to 35%, by weight, of an air-dryable polymeric latex, the latex having a solids content sufficient to form a solid grout from the composition upon drying.
2. The composition of claim 1 , wherein at least 80% of the first particles have a size in the range from 160 to 700 micrometers.
3. The composition of claim 2 , wherein at least 80% of the second particles have a size in the range from 90 to 120 micrometers.
4. The composition of claim 1 , wherein the first mineral filler particles and the second mineral filler particles are particles of the same mineral.
5. The composition of claim 1 , wherein the latex comprises a plurality of polymers.
6. The composition of claim 5 , wherein the latex comprises a plurality of acrylic polymers.
7. The composition of claim 1 , further comprising a polymer-soluble dye.
8. The composition of claim 1 , wherein the composition comprises one or more solvents in an amount sufficient to improve the workability of the composition.
9. The composition of claim 1 , further comprising a fungicide.
10. The composition of claim 1 , further comprising propylene glycol in an amount sufficient to modulate the rate of drying of the composition upon exposure to air.
11. The composition of claim 1 , further comprising an antifoam, a wetting agent, a biocide, a thickening agent, a drying rate modulator, and water.
12. The composition of claim 1 , further comprising a water-repelling polymer.
13. The composition of claim 12 , wherein the water-repelling polymer is selected from the group consisting of fluorochemical polymers, styrene maleic anhydride copolymers, and polyalkylsiloxanes.
14. The composition of claim 1 , further comprising a coupling agent for covalently binding at least one of the first and second mineral fillers with a polymer of the latex.
15. A sealed container containing the grout composition of claim 1 , wherein the container has a nozzle for dispensing the composition from the container under pressure.
16. The container of claim 15 , further comprising a valve in fluid communication with the nozzle, whereby the composition is dispensed through the nozzle upon actuation of the valve.
17. The container of claim 15 , further comprising a piston having a face that urges the composition through the nozzle upon application of force pressure to the piston.
18. The container of claim 17 , further comprising a pressurized reservoir exerts pressure on the piston.
19. The container of claim 17 , wherein the shape of the container is adapted to fit a caulking gun, whereby the caulking gun can be used to apply pressure to the second face of the piston and dispense the composition through the nozzle.
20. A pressurized container containing the grout composition of claim 1 , wherein the container has a valved outlet in fluid communication with the interior of the container for dispensing the composition from the container under pressure upon actuation of the valve.
21. The container of claim 20 , further comprising a nozzle in fluid communication with the outlet of the valve, for directing the dispensed composition.
22. The container of claim 21 , wherein the nozzle has a dispensing end adapted to fit between ceramic tiles.
23. The container of claim 22 , wherein the dispensing end of the nozzle is adapted to fit between ceramic tiles spaced not less than 0.5 inch apart.
24. The container of claim 22 , wherein the dispensing end of the nozzle is adapted to fit between ceramic tiles spaced not less than 0.25 inch apart.
25. The container of claim 22 , wherein the dispensing end of the nozzle is adapted to fit between ceramic tiles spaced not less than 0.125 inch apart.
26. The container of claim 22 , wherein the dispensing end of the nozzle defines an orifice through which the composition can be dispensed and a shaping edge adjacent the orifice, whereby the surface of the dispensed composition can be shaped by sliding the shaping edge along the surface.
27. The container of claim 26 , wherein the shaping edge has a rounded shape for imparting a concave shape to the surface of the dispensed composition when the shaping edge is slid along the surface.
28. The container of claim 22 , wherein the nozzle comprises a stabilizing member for sliding against a tiled surface while dispensing the composition.
29. The container of claim 28 , wherein the stabilizing member is unitary with the nozzle.
30. The container of claim 20 , further comprising a piston interposed between a pressurized portion of the container and a second portion of the container, wherein the second portion contains the composition and fluidly communicates with the valve.
31. The container of claim 30 , wherein the container has a substantially circular cross-section arid the pressurized portion of the container urges the piston axially along the container.
32. The container of claim 20 , wherein the pressurized portion of the container comprises a pressurized bladder contained within the container.
33. A container having a sealed outlet and a compressible portion and containing the composition of claim 1 , whereby the composition is dispensable from the outlet when the outlet is unsealed and the compressible portion is compressed.
34. The container of claim 33 , wherein the outlet is sealed by a valve.
35. A method of waterproofing a surface having tiles adhered thereto, the method comprising filling interstices between the tiles with the composition of claim 1 .
36. The method of claim 35 , wherein the interstices are filled by applying the composition to the tiled surface, urging the composition into the interstices, and thereafter removing excess composition not contained within the interstices.
37. The method of claim 35 , wherein the interstices are filled using an apparatus which comprises a container containing the composition, a pressure source, and a valve in fluid communication with the pressure source and the interior of the container for dispensing the composition from the container upon actuation of the valve.
38. The method of claim 37 , wherein the apparatus further comprises a nozzle for directing the dispensed composition into the interstices.
39. The method of claim 37 , wherein the apparatus is a container having a piston interposed between a pressurized portion of the container and a second portion of the container, wherein the second portion contains the composition and fluidly communicates with the valve.