Patent ID: 7893012

Claim:
A solid cleaning composition consisting essentially of: (a) methacrylate, wherein the methacrylate constitutes between about 1% and about 10% by weight of the solid cleaning composition, and wherein the methacrylate is selected from the group consisting of: sodium polymethacrylate, lithium polymethacrylate, potassium polymathacrylate, ammonium polymethacrylate, and alkanolamine polymethacrylates; (b) water, wherein the water constitutes between about 5% and about 30% by weight of the solid cleaning composition; (c) defoamer, wherein the defoamer constitutes between about 1% and about 5% by weight of the solid cleaning composition; (d) carboxylate, wherein the carboxylate constitutes between about 10% and about 30% by weight of the solid cleaning composition; (e) sodium carbonate, wherein the sodium carbonate constitutes between about 15% and about 80% by weight of the solid cleaning composition; (f) metasilicate, wherein the metasilicate constitutes between about 1% and about 5% by weight of the solid cleaning composition; and (g) surfactant, wherein the surfactant constitutes between about 1% and about 10% by weight of the solid cleaning composition; (h) wherein the solid cleaning composition is substantially phosphorus-free; (i) wherein the methacrylate, sodium carbonate, and water interact to form a hydrate solid; and (j) wherein if heated at a temperature of 120 degrees Fahrenheit, the solid cleaning composition is dimensionally stable and has a growth exponent of less than about 2%.