Patent US6415437B1 successfully refreshed from Google Patents.
US4247408A
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US
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Acidic liquid detergent composition for cleaning hard surfaces containing polyoxyalkylene alkyl ether solvent
Assignee: Kao Corp
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Filing: 1979-05-23
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Granted: 1981-01-27
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Expires: 1999-05-23
Abstract
Abstract A weakly acidic or acidic liquid detergent composition comprising a water-soluble solvent, an anionic and/or nonionic surfactant, an acidic substance or a mixture of acidic substance and water-soluble salt thereof, wherein said water-soluble solvent has the formula RO(C.sub.2 H.sub.4 O).sub.x (C.sub.3 H.sub.6 O).sub.y R' wherein R and R' are hydrogen, methyl or ethyl, with the proviso that R and R' are not hydrogen simultaneously, the sum of x plus y is from 3.0 to 10 and 0≦x≦0.25y.
Inventors
- 👤 Tetsuya Imamura
- 👤 Ryoji Shiozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:21
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/43; C11D3/02; C11D3/04; C11D3/042; C11D3/16; C11D3/20; C11D3/2075; C11D3/26; C11D3/33
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
A weakly acidic or acidic liquid detergent composition consisting essentially of: (A) 0.1 to 20% by weight of one or a mixture of two or more water-soluble solvents having the formula: RO(C.sub.2 H.sub.4 O).sub.x (C.sub.3 H.sub.6 O).sub.y R' wherein R and R' are hydrogen, methyl or ethyl, with the proviso that both of R and R' are not hydrogen simultaneously, the mean value of x plus y is from 3.5 to 6.0 and 0.0≦x≦0.25y, (B) 0.1 to 10% by weight of water-soluble, synthetic, anionic, organic surfactant, water-soluble, synthetic, nonionic, organic surfactant, or mixture thereof, (C) 0.1 to 20% by weight of water-soluble acidic substance or a mixture of water-soluble acidic substance and water-soluble salt thereof, and (D) the balance is essentially water.
Claim 2
Dependent Claim
122 words
A weakly acidic or acidic liquid detergent composition consisting essentially of: (A) 0.1 to 20% by weight of one or a mixture of two or more water-soluble solvents having the formula: RO(C.sub.2 H.sub.4 O).sub.x (C.sub.3 H.sub.6 O).sub.y R' wherein R and R' are hydrogen, methyl or ethyl, with the proviso that both of R and R' are not hydrogen simultaneously, the mean value of x plus y is from 3.5 to 6.0 and 0.0≦x≦0.25y, (B) 0.1 to 10% by weight of water-soluble, synthetic, anionic, organic surfactant, water-soluble, synthetic, nonionic, organic surfactant, or mixture thereof, (C) 0.1 to 20% by weight of water-soluble acidic substance or a mixture of water-soluble acidic substance and water-soluble salt thereof, and (D) the balance is essentially water.
Claim 3
Dependent Claim
59 words
A liquid detergent composition as set forth in claim 1 wherein the acidic substance is selected from the group consisting of citric acid, malic acid, condensed phosphoric acid, ethylenediamine tetra-acetic acid, hydroxyethylenediamine tri-acetic acid, sulfamic acid, hydrochloric acid and phosphoric acid, and the water-soluble salt is selected from the group consisting of alkali metal salts of said acidic substance.
Claim 4
Dependent Claim
22 words
A liquid detergent composition as set forth in claim 1 wherein the component (B) is a sulfonate type anionic surface active agent.
Claim 5
Dependent Claim
28 words
A liquid detergent composition as set forth in claim 3 wherein the sulfonate type anionic surface active agent is an alkali metal salt of a linear alkyl benzenesulfonate.
References Cited (Backward Citations)
US3239467A
Cited
US4013579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-27 | 1984-07-28 | 1985-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-27 | 1988-07-28 | 1989-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-27 | 1992-07-28 | 1993-01-27 | $7700.00 | Window Closed / Lapsed |