US4756845A
Expired / Lapsed
US
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Bleaching compositions
Assignee: Lion Corp
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Filing: 1986-05-28
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Granted: 1988-07-12
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Expires: 2006-05-28
Abstract
Abstract A bleaching agent composition comprising a peroxide capable of releasing hydrogen peroxide in aqueous solution, in admixture with an activator for the peroxide selected from the group consisting of naphthonitriles, isophthalonitrides, terephthalonitriles, alkali metal salts of cyanic acid, cyanic acid ammonium salt, cyanopyridines and acid neutralized products thereof, cyanopyridinium salts, O-acyl compounds, and N-acyl compounds has improved bleaching power and enables bleaching of an article within a short period of time.
Inventors
- 👤 Hiroshi Sugawara
- 👤 Yoji Toma
- 👤 Takahiro Takabe
- 👤 Kenji Yokoi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:26
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/3917; C11D3/3925; C11D3/392
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
147 words
A bleaching agent composition comprising a peroxide capable of releasing hydrogen peroxide in aqueous solution, characterized in that the composition further comprises an activator for the peroxide, said activator being at least one member selected from the group consisting of a cyanopyridine of the formula: ##STR40## wherein R is a lower alkyl group or a lower alkoxy group, p has a value from 0 to 4, q has a value from 1 to 3, and the sum or p and q is from 1 to 5, inclusive; an acid neutralized product of the cyanopyridine of formula (4); and a cyanopyridinium salt of the formula: ##STR41## wherein R, p, and q are as defined above, R' is an alkyl or alkenyl group having 1 to 18 carbon atoms, and X is a halogen, an alkyl sulfonate group having 1 to 3 carbon atoms, or a phenyl sulfonate group.
Claim 2
Dependent Claim
147 words
A bleaching agent composition comprising a peroxide capable of releasing hydrogen peroxide in aqueous solution, characterized in that the composition further comprises an activator for the peroxide, said activator being at least one member selected from the group consisting of a cyanopyridine of the formula: ##STR40## wherein R is a lower alkyl group or a lower alkoxy group, p has a value from 0 to 4, q has a value from 1 to 3, and the sum or p and q is from 1 to 5, inclusive; an acid neutralized product of the cyanopyridine of formula (4); and a cyanopyridinium salt of the formula: ##STR41## wherein R, p, and q are as defined above, R' is an alkyl or alkenyl group having 1 to 18 carbon atoms, and X is a halogen, an alkyl sulfonate group having 1 to 3 carbon atoms, or a phenyl sulfonate group.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein the peroxide and the activator are blended in a molar ratio of from 20:1 to 1:2.
Claim 4
Dependent Claim
35 words
The composition of claim 1 wherein the peroxide is selected from the group consisting of hydrogen peroxide, percarbonates, perborates, and hydrogen peroxide adducts of pyrophosphates, citrates, sodium sulfate, urea and sodium silicate, and mixtures thereof.
Claim 5
Dependent Claim
14 words
The composition of claim 1 wherein the activator is a cyanopyridine of formula (4).
Claim 6
Dependent Claim
19 words
The composition of claim 1 wherein the activator is an acid neutralized product of the cyanopyridine of formula (4).
Claim 7
Dependent Claim
21 words
The composition of claim 5 wherein the acid of the neutralized product of the cyanopyridine of formula (4) is hydrochloric acid.
Claim 8
Dependent Claim
21 words
The composition of claim 5 wherein the acid of the neutralized product of the cyanopyridine of formula (4) is sulfuric acid.
Claim 9
Dependent Claim
13 words
The composition of claim 4 wherein the cyanopyridine is 2-cyanopyridine, 3-cyanopyridine or 4-cyanopyridine.
Claim 10
Dependent Claim
13 words
The composition of claim 8 wherein the cyanopyridine of formula (4) is 2-cyanopyridine.
Claim 11
Dependent Claim
13 words
The composition of claim 8 wherein the cyanopyridine of formula (4) is 3-cyanopyridine.
Claim 12
Dependent Claim
13 words
The composition of claim 8 wherein the cyanopyridine of formula (4) is 4-cyanopyridine.
Claim 13
Dependent Claim
34 words
The composition of claim 1 wherein the cyanopyridinium salt of formula (5) is a 2-cyanopyridine, 3-cyanopyridine, or 4-cyanopyridine salt of formula (5) wherein R' is an alkyl group having 1 to 12 carbon atoms.
Claim 14
Dependent Claim
22 words
The composition of claim 1 wherein the activator is in granular form and is blended with the peroxide to form the composition.
Claim 15
Dependent Claim
28 words
The composition of claim 1 which contains an auxiliary additive selected from a builder, a surfactant, an enzyme, a flavor, a pigment, a fluorescent agent or mixtures thereof.
Claim 16
Dependent Claim
18 words
A bleaching detergent composition comprising a granular detergent and a bleaching agent composition as defined in claim 1.
Claim 17
Dependent Claim
36 words
The composition of claim 15 which contains an auxiliary additive selected from a surfactant, a divalent metal ion trapping agent, an alkaline agent, an electrolyte, recontamination inhibitor, an enzyme, a flavor, a dye or mixtures thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |