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US4279769A
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Bleaching composition
Assignee: Kao Corp
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Filing: 1979-03-14
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Granted: 1981-07-21
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Expires: 1999-03-14
Abstract
Abstract A bleaching composition comprising (A) sodium percarbonate and/or tetrasodium ethane-1,1,2,2-tetracarboxylate/hydrogen peroxide adduct, and (B) dicarboxyalkyleneimino, monocarboxyalkyleneiminobis(alkylene phosphonic acid), hydroxyethylimino diacetate and/or hydroxyethylethylenediamine triacetate compounds. The composition minimizes color change or fading of colored fabrics caused by bleaching.
Inventors
- 👤 Kouichi Yagi
- 👤 Yunosuke Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:24
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3937; C11D3/394; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
137 words
A bleaching composition consisting essentially of (A) one or both of sodium percarbonate and a tetrasodium ethane-1,1,2,2-tetracarboxylate/hydrogen peroxide adduct, and (B) at least one compound of the formulae (I), (II) and (III): ##STR4## wherein X and Y each represent hydrogen or an alkyl group of 1-5 carbon atoms, R 1 represents an alkyl group of 1-5 carbon atoms, an acyl group of 1-5 carbon atoms or a phosphonoalkylene group of 1-5 carbon atoms, R 2 represents a carboxyalkylene group of 1-5 carbon atoms, and their alkali metal salts, alkaline earth metal salts, ammonium salts and alkylolamine salts having an alkyl group of 2 or 3 carbon atoms, and ##STR5## wherein R represents HOCH 2 CH 2 -- or ##STR6## and M 1 , M 2 and M 3 represents an alkali metal or an alkaline earth metal.
Claim 2
Dependent Claim
137 words
A bleaching composition consisting essentially of (A) one or both of sodium percarbonate and a tetrasodium ethane-1,1,2,2-tetracarboxylate/hydrogen peroxide adduct, and (B) at least one compound of the formulae (I), (II) and (III): ##STR4## wherein X and Y each represent hydrogen or an alkyl group of 1-5 carbon atoms, R 1 represents an alkyl group of 1-5 carbon atoms, an acyl group of 1-5 carbon atoms or a phosphonoalkylene group of 1-5 carbon atoms, R 2 represents a carboxyalkylene group of 1-5 carbon atoms, and their alkali metal salts, alkaline earth metal salts, ammonium salts and alkylolamine salts having an alkyl group of 2 or 3 carbon atoms, and ##STR5## wherein R represents HOCH 2 CH 2 -- or ##STR6## and M 1 , M 2 and M 3 represents an alkali metal or an alkaline earth metal.
Claim 3
Dependent Claim
23 words
A bleaching composition according to claim 1, in which the component (B) is at least one compound of the formulae (I) and (II).
Claim 4
Dependent Claim
21 words
A bleaching composition according to claim 1, in which the component (B) is at least one compound of the formula (III).
Claim 5
Dependent Claim
22 words
A bleaching composition according to claim 2 which contains 40-99.9 wt. % of component (A) and 0.1-20 wt. % of component (B)
Claim 6
Dependent Claim
15 words
A bleaching composition according to claim 4 which contains 1-10 wt. % of component (B).
Claim 7
Dependent Claim
55 words
A bleaching composition according to claim 2 wherein the compound of formula (I) or (II) is selected from the group consisting of methyliminodiacetic acid, phosphonomethyliminodiacetic acid, phosphonoethyliminodiacetic acid, acetamidonitrilodiacetic acid, carboxyethyliminobis(methylenephosphonic acid) and carboxymethyliminobis(methylenephosphonic acid) and their alkali metal salts, alkaline earth metal salts and alkylolamine salts having an alkyl group of 2-3 carbon atoms.
Claim 8
Dependent Claim
22 words
A bleaching composition according to claim 2 which contains 70-95 wt. % of sodium percarbonate and 1-10 wt. % of sodium methyliminodiacetate.
Claim 9
Dependent Claim
22 words
A bleaching composition according to claim 3 which contains 70-95 weight % of component (A) and 1-10 weight % of component (B).
Claim 10
Dependent Claim
13 words
A bleaching composition according to claim 3 wherein component (A) is sodium percarbonate.
Claim 11
Dependent Claim
17 words
A bleaching composition according to claim 3 wherein the compound of formula (III) is a lithium salt.
Claim 12
Dependent Claim
21 words
A bleaching composition according to claim 3 wherein the compound of general formula (III) is a magnesium salt or barium salt.
Claim 13
Dependent Claim
18 words
A bleaching composition according to claim 3 wherein R in formula (III) is HOCH 2 CH 2 --.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |