Color-changing wood filler
View Patent ↗A composition for use as a wood-filler that includes a modified styrene butadiene latex; at least one pH indicator, wherein pH indicator causes the composition to change color as the composition dries; and one or more types of microspheres, wherein the microspheres provide durability and stainability to the wood-filling composition.
1. A composition for use as a wood-filler, consisting of:
(a) a styrene butadiene latex;
(b) at least one pH indicator, wherein the at least one pH indicator is operative to provide a visual indication that the composition is dry, and wherein the visual indication is based on a color change of the composition that occurs as the composition dries;
(c) microspheres, wherein the microspheres include glass or ceramic or both, and wherein the microspheres provide durability and stainability to the wood-filling composition;
(d) water;
(e) at least one pH controller;
(f) at least one surfactant;
(g) at least one dispersant;
(h) at least one freeze-thaw stabilizer;
(i) at least one bactericide;
(j) at least one defoamer;
(k) at least one thickener;
(l) at least one calcium carbonate filler; and
(m) at least one film former.
2. The composition of claim 1 , wherein the at least one pH indicator is o-Cresolphthalein.
3. The composition of claim 1 , wherein the at least one freeze-thaw stabilizer includes propylene glycol; wherein the at least one bactericide includes an aqueous blend of chlorinated and non-chlorinated isothiazolinones and 2-bromo-2-nitro-1,3-propanediol; wherein the at least one thickener includes hydroxypropyl methylcellulose; wherein the at least one calcium carbonate filler includes dry ground calcium carbonate; and wherein the at least one film former includes dipropylene glycol n-propyl ether.
4. The composition of claim 1 , wherein upon drying, the color of the composition changes from purple to white.
5. A composition for use as a wood-filler, consisting of:
(a) a styrene butadiene latex;
(b) at least one pH indicator, wherein the at least one pH indicator is operative to provide a visual indication that the composition is dry, and wherein the visual indication is based on a color change of the composition that occurs as the composition dries;
(c) microspheres, wherein the microspheres include glass or ceramic or both, and wherein the microspheres provide durability and stainability to the wood-filling composition;
(d) at least one pigment;
(e) water;
(f) at least one pH controller;
(g) at least one surfactant;
(h) at least one dispersant;
(i) at least one freeze-thaw stabilizer;
(j) at least one bactericide;
(k) at least one defoamer;
(l) at least one thickener;
(m) at least one calcium carbonate filler; and
(n) at least one film former.
6. The composition of claim 5 , wherein the at least one pH indicator is o-cresolphthalein.
7. The composition of claim 5 , wherein the at least one freeze-thaw stabilizer includes propylene glycol; wherein the at least one bactericide includes an aqueous blend of chlorinated and non-chlorinated isothiazolinones and 2-bromo-2-nitro-1,3-propanediol; wherein the at least one thickener includes hydroxypropyl methylcellulose; wherein the at least one calcium carbonate filler includes dry ground calcium carbonate; and wherein the at least one film former includes dipropylene glycol n-propyl ether.
8. The composition of claim 5 , wherein upon drying, the color of the composition changes from magenta to beige.