More controllable acoustic spray patch
View Patent ↗A more controllable acoustic ceiling patch or textured material in the form of a sprayable composition includes a base, a filler, an adhesive binder, an anti-foaming agent, a suspension agent, and rubber particulates or polyethylene particulates forming an aggregate suitable for spraying in the presence of volatile organic compound (VOC) propellants without melting or deterioration. The more controllable acoustic ceiling patch is storable and dispensable from a pressurized dispenser having a delivery nozzle. An aerosol system with a spray nozzle is included on the container for selective discharge of the textured material onto a prepared patch area, which may be on a drywall or support panel so as to match and blend with the surrounding acoustic ceiling surface area in order to provide a continuous and unbroken coextensive surface texture of mechanically and visually matched material.
1. A hardenable flowable substance for application to a patch surface surrounded by an acoustic ceiling material having an irregular surface texture to form a layer of textured patch material on the patch surface, wherein the hardenable flowable substance is storable in a fluid-tight dispensing container, and further wherein the hardenable flowable substance is mixed with a volatile organic compound propellant, the hardenable flowable substance comprising:
a liquid base;
a filler selected to form an extender or bodifier for the resulting patch material;
an adhesive binder selected to adhere the resulting patch material to the surface;
an aggregate comprising rubber particulates, selected to give the resulting patch material an irregular surface texture that substantially matches the surrounding acoustic ceiling material;
an anti-foaming agent; and
a suspension agent comprising carbonal,
wherein the hardenable flowable substance is initially stored in the fluid state and is dispensable in the form of a controllable aerosol spray from the fluid-tight container and, after being released and curing, forms a bumpy, irregular surface texture that matches and is compatible with the acoustic ceiling material surrounding the patch, and wherein the aggregate and volatile organic compound propellant are selected such that the aggregate does not decompose in the volatile organic compound propellant when stored in the fluid state or dispensed in the aerosol spray.
2. The hardenable flowable substance according to claim 1 , having the following composition by percentage weight:
the liquid base of 20–70%;
the filler of 40–80%;
the adhesive binder of 1–50%;
the propellant of 5–20%;
the aggregate of 2–40%;
the anti-foaming agent of 1–10%; and
the suspension agent of 1–20%.
3. The hardenable flowable substance according to claim 2 , wherein:
the liquid base consists essentially of water;
the filler consists essentially of a mixture of calcium carbonate and mica;
the adhesive binder consists essentially of polyvinyl alcohol;
the propellant consists essentially of dimethyl ether;
the rubber particulates of the aggregate are open-cell; and
the suspension agent consists essentially of carbonal.
4. The hardenable flowable substance according to claim 2 , wherein:
the liquid base consists essentially of a solvent;
the filler consists essentially of a mixture of calcium carbonate and mica;
the adhesive binder consists essentially of polyvinyl alcohol;
the propellant consists essentially of dimethyl ether;
the rubber particulates of the aggregate are open-cell; and
the suspension agent consists essentially of carbonal.
5. The hardenable flowable substance according to claim 1 , further comprising:
a fungicide.
6. The hardenable flowable substance according to claim 5 , wherein the fungicide has a composition by percentage weight of 0.05–5%.
7. The hardenable flowable substance according to claim 1 , further comprising:
an anti-freeze.
8. The hardenable flowable substance according to claim 7 , wherein the anti-freeze consists essentially of ethylene glycol.
9. The hardenable flowable substance according to claim 7 , wherein the anti-freeze has a composition by percentage weight of 1–10%.