Patent US4645979A successfully refreshed from Google Patents.
Patent US4013579A successfully refreshed from Google Patents.
US4013579A
Expired / Lapsed
US
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Acidic cleaning composition
Assignee: Kao Corp
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Filing: 1974-05-31
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Granted: 1977-03-22
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Expires: 1994-05-31
Abstract
Abstract An acidic cleaning composition comprising at least 0.1 weight percent of at least one member selected from the group consisting of furan-carboxylic acid and derivatives thereof having the following formula I and tetrahydrofuran-carboxylic acid and derivatives thereof having the following formula II <IMAGE> wherein R1, R2, R3 and R4 are hydrogen, -COOH, -CH3, -C2H5 or -OH with the proviso that at least one of R1, R2, R3 and R4 is -COOH.
Inventors
- 👤 Yumio Nakasone
- 👤 Miwako Abe
- 👤 Hiroshi Mizutani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:14
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/43; C11D3/16; C11D3/20; C11D3/2096
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
165 words
A method of cleaning an object having adherent soil or stain thereon, which comprises applying to said object a liquid acidic cleaning composition, consisting essentially of a. from 0.1 to 20 weight percent of at least one furancarboxylic acid compound having the formula ##STR5## wherein R 1 , R 2 , R 3 and R 4 , which can be the same or different, are hydrogen or --COOH, with the proviso that at least one of R 1 , R 2 , R 3 and R 4 is --COOH, b. up to 10 weight percent of anionic, cationic, nonionic or ampholytic water-soluble surfactants effective to promote penetration of the cleaning composition for dispersing and emulsifying dislodged soil, c. up to 10 weight percent of mono- or di-ethylene glycol mono alkyl (C 1 to C 4 ) ethers, d. up to 10 weight percent of hydrotroping agent sufficient to dissolve (a), and e. the balance is water and then rubbing said object to remove soil therefrom.
Claim 2
Independent Claim
165 words
A method of cleaning an object having adherent soil or stain thereon, which comprises applying to said object a liquid acidic cleaning composition, consisting essentially of a. from 0.1 to 20 weight percent of at least one furancarboxylic acid compound having the formula ##STR5## wherein R 1 , R 2 , R 3 and R 4 , which can be the same or different, are hydrogen or --COOH, with the proviso that at least one of R 1 , R 2 , R 3 and R 4 is --COOH, b. up to 10 weight percent of anionic, cationic, nonionic or ampholytic water-soluble surfactants effective to promote penetration of the cleaning composition for dispersing and emulsifying dislodged soil, c. up to 10 weight percent of mono- or di-ethylene glycol mono alkyl (C 1 to C 4 ) ethers, d. up to 10 weight percent of hydrotroping agent sufficient to dissolve (a), and e. the balance is water and then rubbing said object to remove soil therefrom.
Claim 3
Dependent Claim
20 words
A method according to claim 1, in which said cleaning composition contains from 3 to 10 weight percent of component
Claim 4
Dependent Claim
30 words
A method according to claim 1, wherein said compound (a) is selected from the group consisting of furan-2-carboxylic acid, furan-3-carboxylic acid, furan-2,3-dicarboxylic acid, furan-2,4-dicarboxylic acid, furan-2,5-dicarboxylic acid and furan-3,4-dicarboxylic acid.
Claim 5
Dependent Claim
31 words
A method according to claim 1, which said cleaning composition consists essentially of a. from 0.1 to 5 weight percent of said furan-carboxylic acid compound, and b. the balance is water.
Claim 6
Dependent Claim
45 words
A method according to claim 1, in which said cleaning composition consists essentially of a. from 0.1 to 20 weight percent of said furan-carboxylic acid compound. b. up to 10 weight percent of hydrotroping agent sufficient to dissolve (a) and c. the balance is water.
Claim 7
Dependent Claim
23 words
A method according to claim 5, in which said cleaning composition contains from one to 6 weight percent of said furancarboxylic acid compound.
Claim 8
Dependent Claim
157 words
A liquid acidic cleaning composition for removing adherent soils and stains from hard surfaces, consisting essentially of a. from 0.1 to 20 weight percent of at least one furancarboxylic acid compound having the formula ##STR6## wherein R 1 , R 2 , R 3 and R 4 , which can be the same or different, are hydrogen or --COOH, with the proviso that at least one of R 1 , R 2 , R 3 and R 4 is --COOH, b. up to 10 weight percent of anionic, cationic, nonionic or ampholytic water-soluble surfactants effective to promote penetration of the cleaning composition for dispersing and emulsifying dislodged soil, c. up to 10 weight percent of mono- or di-ethylene glycol mono alkyl (C 1 to C 4 ) esters, d. up to 10 weight percent of hydrotroping agent sufficient to dissolve (a), e. from 5 to 15 weight percent of hydrochloric acid, and f. the balance is water.
Claim 9
Dependent Claim
157 words
A liquid acidic cleaning composition for removing adherent soils and stains from hard surfaces, consisting essentially of a. from 0.1 to 20 weight percent of at least one furancarboxylic acid compound having the formula ##STR6## wherein R 1 , R 2 , R 3 and R 4 , which can be the same or different, are hydrogen or --COOH, with the proviso that at least one of R 1 , R 2 , R 3 and R 4 is --COOH, b. up to 10 weight percent of anionic, cationic, nonionic or ampholytic water-soluble surfactants effective to promote penetration of the cleaning composition for dispersing and emulsifying dislodged soil, c. up to 10 weight percent of mono- or di-ethylene glycol mono alkyl (C 1 to C 4 ) esters, d. up to 10 weight percent of hydrotroping agent sufficient to dissolve (a), e. from 5 to 15 weight percent of hydrochloric acid, and f. the balance is water.
Claim 10
Dependent Claim
29 words
A liquid acidic cleaning composition according to claim 7, containing from one to 5 weight percent of component (a) and from 8.5 to 10.5 weight percent of component (e).
Claim 11
Dependent Claim
145 words
A liquid acidic cleaning composition for removing adherent soils and stains from hard surfaces, consisting essentially of a. from 0.1 to 20 weight percent of at least one furancarboxylic acid compound having the formula ##STR7## wherein R 1 , R 2 , R 3 and R 4 , which can be the same or different, are hydrogen or --COOH, with the proviso that at least one of R 1 , R 2 , R 3 and R 4 is --COOH, b. 3 to 10 weight percent of anionic, cationic, nonionic or ampholytic water-soluble surfactants effective to promote penetration of the cleaning composition for dispersing and emulsifying dislodged soil, c. up to 10 weight percent of mono- or di-ethylene glycol mono alkyl (C 1 to C 4 ) esters, d. a hydrotroping agent in an amount sufficient to dissolve (a), and e. the balance is water.
Claim 12
Dependent Claim
145 words
A liquid acidic cleaning composition for removing adherent soils and stains from hard surfaces, consisting essentially of a. from 0.1 to 20 weight percent of at least one furancarboxylic acid compound having the formula ##STR7## wherein R 1 , R 2 , R 3 and R 4 , which can be the same or different, are hydrogen or --COOH, with the proviso that at least one of R 1 , R 2 , R 3 and R 4 is --COOH, b. 3 to 10 weight percent of anionic, cationic, nonionic or ampholytic water-soluble surfactants effective to promote penetration of the cleaning composition for dispersing and emulsifying dislodged soil, c. up to 10 weight percent of mono- or di-ethylene glycol mono alkyl (C 1 to C 4 ) esters, d. a hydrotroping agent in an amount sufficient to dissolve (a), and e. the balance is water.
Claim 13
Dependent Claim
17 words
A cleaning composition according to claim 9, containing from one to 6 weight percent of component (a).
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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |