# US 4,395,344 A · Drain opener composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,395,344 A - Document ID: US4395344A - Status: Granted - Kind: A - Application number: 06/709,652 - Filed: 1976-07-29 - Granted: 1983-07-26 - Earliest claimed: 1973-05-21 - Assignees: The Clorox Company - Inventors: Lodric L. Maddox - Web page: https://patentgrep.com/patent/US4395344A ## CPC - C11D 3/0052: {Gas evolving or heat producing compositions} - C11D 3/39: Organic or inorganic per-compounds - C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL ## Abstract A drain opening composition having superior ability to thoroughly and uniformly mix with the contents of a drain whereby any drainage constriction is attacked by the components of the composition to ensure free flow within the drain. The composition contains strong caustic in combination with an oxygen gas producing peroxy compound, particulate aluminum, potassium salts, a catalyst to promote the gas-forming reaction and a surfactant. ## Claims ### Claim 1 A drain opener composition that provides improved mixing with liquids trapped within a plugged drain, comprising a strong caustic in an amount of greater than about 50% by weight of the composition, aluminum metal in an effective amount for producing hydrogen gas in the presence of said caustic and for causing a mixing action, said effective amount of aluminum metal comprising less than about 5% by weight of the composition, a peroxy compound suitable for the process of generating oxygen gas over an extended period of time in an effective amount for generating oxygen gas to produce a strong mixing action, said amount of said peroxy compound comprising less than about 10% by weight of composition, a heavy metal salt catalyst in an amount sufficient for promoting the evolution of oxygen from said peroxy compound in the presence of water and the strong caustic, a surfactant which is stable in a highly caustic environment, and a water soluble potassium salt other than said surfactant, said potassium salt producing potassium ions in water solution, said ions upon contact with saponified fats and greases in said drain producing soft, highly soluble soaps which easily dissolve in drain water. ### Claim 2 (depends on 1) The composition of claim 1 wherein said strong caustic is sodium hydroxide. ### Claim 3 (depends on 1) The composition of claim 1 wherein the peroxy compound is a perborate. ### Claim 4 (depends on 3) The composition of claim 3 wherein the perborate is sodium perborate monohydrate. ### Claim 5 (depends on 4) The composition of claim 4 wherein the sodium perborate monohydrate is present in an amount of about 7 to about 8% by weight. ### Claim 6 (depends on 1) The composition of claim 1 wherein the aluminum metal is present as particles and comprises about 3% by weight of the composition. ### Claim 7 (depends on 1) The composition of claim 1 wherein said catalyst is cobalt carbonate. ### Claim 8 (depends on 7) The composition of claim 7 wherein the catalyst is present in an amount of about 0.3% by weight in the composition. ### Claim 9 (depends on 1) The composition of claim 1 wherein the surfactant is an anionic alkyl phosphate ester surfactant. ### Claim 10 (depends on 9) The composition of claim 9 wherein the surfactant is present in an amount of about 0.01% by weight in the composition. ### Claim 11 (depends on 1) The composition of claim 1 wherein the potassium salts are a mixture of potassium chloride and potassium nitrate. ### Claim 12 (depends on 11) The composition of claim 11 wherein the potassium chloride is present in an amount of about 18% to about 21% by weight and the potassium nitrate is present in an amount of about 5% to about 17% by weight. ### Claim 13 A drain opener composition comprising by weight about 54 to 62% sodium hydroxide, about 3% aluminum metal, about 0.1 to 0.3% cobalt carbonate, about 0.01% of an anionic alkyl phosphate ester surfactant, about 7 to 10% of sodium perborate-monohydrate, about 18 to 21% potassium chloride, and about 5 to 17% potassium nitrate. ### Claim 14 (depends on 1) The composition of claim 1 wherein the components of the composition are packaged into two portions, the first portion including the strong caustic, aluminum metal, the catalyst and the surfactant, and the second portion including the peroxy compound and the postassium salts. ### Claim 15 (depends on 1) A composition as in claim 1, wherein said peroxy compound in the presence of said catalyst, said water and said strong caustic evolves said oxygen from said peroxy compound for an extended period of time for at least about 20 minutes. ### Claim 16 (depends on 1) A composition as in claim 1, wherein said peroxy compound is selected from the group consisting of a perborate, a percarbonate and a perphosphate. ### Claim 17 A drain opener composition that provides improved mixing with liquids trapped within a plugged drain, comprising sodium hydroxide in an amount greater than about 50% by weight of the composition, aluminum metal in an effective amount for producing hydrogen gas in the presence of said sodium hydroxide and for causing a mixing action, said effective amount of aluminum metal comprising less than about 5% by weight of the composition, sodium perborate monohydrate in an effective amount for generating oxygen gas for an extended period of time of at least about 20 minutes, said effective amount of the sodium perborate monohydrate comprising about 7 to about 10% by weight of composition, a heavy metal salt catalyst in an amount sufficient for promoting the evolution of oxygen from the sodium perborate monohydrate in the presence of water and the sodium hydroxide, a surfactant which is stable in a highly caustic environment, and a water soluble potassium salt producing potassium ions in water solution, said ions upon contact with saponified fats and greases in said drain producing soft, highly soluble soaps which easily dissolve in drain water.