US3965048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soap curd dissolving drain cleaner
Assignee: SC Johnson and Son Inc
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Filing: 1974-03-29
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Granted: 1976-06-22
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Expires: 1994-03-29
Abstract
Abstract Drain cleaning compositions, especially effective in dissolving soap curd, are provided which comprise in aqueous solution a potassium salt of nitrilotriacetic acid, N-2-hydroxyethylimino diacetic acid, an alkylene polyamine polycarboxylic acid, or mixtures thereof, and potassium hydroxide, wherein the compositions are substantially free of other alkali metal ions and the alkylene polyamine polycarboxylic acid has the formula (HOOCCH.sub.2).sub.2 N[(CH.sub.2).sub.x NCH.sub.2 COOH].sub.y CH.sub.2 COOH where x and y may each independently be from 1 to 4.
Inventors
- 👤 Justin J. Murtaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:32
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/06; B; B08; B08B; B08B3/00; B08B3/04; B08B3/08; C11D3/00; C11D3/16; C11D3/26; C11D3/33
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
A drain cleaning composition consisting essentially of: from about 0.25% to 10%, by weight, of a potassium salt of a member selected from the group consisting of nitrilotriacetic acid, N-2-hydroxyethylimino diacetic acid, an alkylene polyamine polycarboxylic acid, and mixtures thereof; from about 0.50% to 10%, by weight, of potassium hydroxide; and up to about 99%, by weight, of water, wherein said composition is substantially free of other alkali metal ions.
Claim 2
Dependent Claim
70 words
A drain cleaning composition consisting essentially of: from about 0.25% to 10%, by weight, of a potassium salt of a member selected from the group consisting of nitrilotriacetic acid, N-2-hydroxyethylimino diacetic acid, an alkylene polyamine polycarboxylic acid, and mixtures thereof; from about 0.50% to 10%, by weight, of potassium hydroxide; and up to about 99%, by weight, of water, wherein said composition is substantially free of other alkali metal ions.
Claim 3
Dependent Claim
32 words
A composition according to claim 1 wherein said alkylene polyamine polycarboxylic acid has the formula (HOOCCH.sub.2).sub.2 N[(CH.sub.2).sub.x NCH.sub.2 COOH].sub.y CH.sub.2 COOH wherein x and y may independently be from 1 to 7.
Claim 4
Dependent Claim
32 words
A composition according to claim 2 wherein said alkylene polyamine polycarboxylic acid has the formula (HOOCCH.sub.2).sub.2 N[(CH.sub.2).sub.x NCH.sub.2 COOH].sub.y CH.sub.2 COOH wherein x and y may independently be from 1 to 4.
Claim 5
Dependent Claim
34 words
A composition according to claim 2 wherein said potassium salt is present from about 0.25% to about 5.0%, by weight, and said potassium hydroxide is present from about 0.50% to about 5.0%, by weight.
Claim 6
Dependent Claim
34 words
A composition according to claim 3 wherein said potassium salt is present from about 0.25% to about 5.0%, by weight, and said potassium hydroxide is present from about 0.50% to about 5.0%, by weight.
Claim 7
Dependent Claim
27 words
A composition according to claim 5 wherein said member is selected from the group consisting of ethylenediaminetetraacetic acid, nitrilotriacetic acid, and N-2-hydroxyethylimino diacetic acid, and mixtures thereof.
Claim 8
Dependent Claim
34 words
A composition according to claim 6 wherein said potassium salt is present from about 1.0% to about 3.0%, by weight, and said potassium hydroxide is present from about 1.0% to about 3.0%, by weight.
Claim 9
Dependent Claim
32 words
A composition according to claim 7 wherein said composition additionally contains up to about 10%, by weight, of a corrosion inhibitor selected from the group consisting of potassium silicate and potassium thioglycolate.
Claim 10
Dependent Claim
48 words
A composition according to claim 8 wherein said composition additionally contains from about 0.25% to about 5.0%, by weight, of a potassium or ammonium salt of an anionic surfactant selected from the group consisting of: lauryl sulfate; a sulfated linear primary alcohol ethoxylate; an anionic phosphate ester surfactant.
Claim 11
Dependent Claim
46 words
A composition according to claim 9 wherein said composition consists essentially of, by weight, about 5.0% of the potassium salt; about 5.0% of potassium hydroxide; about 3.0% of said corrosion inhibitor; about 0.25% of said salt of said anionic surfactant; and the remaining portion is water.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |