US4655781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable bleaching compositions
Assignee: Clorox Co
•
Filing: 1984-07-02
•
Granted: 1987-04-07
•
Expires: 2004-07-02
Abstract
Abstract This invention provides stable peroxyacid bleaching compositions comprising: (a) a surface active peroxyacid, and (b) at least one surfactant which forms a mixed micelle in aqueous solution with said peroxyacid; wherein said aqueous solution contains a detergent concentration of about 0.1 to 3.0 grams/liter. Buffers and other typical cleaning adjuncts known to those skilled in the art may be included. The invention also provides a method of stabilizing the decomposition rate of surface active peroxyacids.
Inventors
- 👤 Chung-Lu Hsieh
- 👤 Stephen B. Kong
- 👤 Dale S. Steichen
- 👤 Harold R. Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:15
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3937; C11D3/3945; C11D3/3947
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
82 words
A substantially nonaqueous stable peroxyacid bleach composition comprising: (a) an amount of a surface active peroxyacid sufficient to produce 1-100 ppm A.O. in aqueous solution, which tends to undergo extremely rapid solution decomposition in aqueous solution; and (b) an amount of at least one surfactant sufficient to produce 1-10,000 ppm surfactant in aqueous solution in order to form a mixed micelle with the peroxyacid; wherein said aqueous solution contains a commercial laundry detergent in a concentration of about 0.1 to 3.0 grams/liter.
Claim 2
Dependent Claim
82 words
A substantially nonaqueous stable peroxyacid bleach composition comprising: (a) an amount of a surface active peroxyacid sufficient to produce 1-100 ppm A.O. in aqueous solution, which tends to undergo extremely rapid solution decomposition in aqueous solution; and (b) an amount of at least one surfactant sufficient to produce 1-10,000 ppm surfactant in aqueous solution in order to form a mixed micelle with the peroxyacid; wherein said aqueous solution contains a commercial laundry detergent in a concentration of about 0.1 to 3.0 grams/liter.
Claim 3
Dependent Claim
22 words
The stable peroxyacid bleach composition of claim 1 wherein said surfactant is selected from anionic, nonionic, amphoteric, zwitterionic surfactants, and mixtures thereof.
Claim 4
Dependent Claim
27 words
The stable peroxyacid bleach composition of claim 1 wherein said peroxyacid comprises about 0.1 to 20.0% by weight and said surfactant comprises 0.01 to 80.0% by weight.
Claim 5
Dependent Claim
12 words
The stable peroxyacid bleach composition of claim 1 further comprising a buffer.
Claim 6
Dependent Claim
35 words
The stable peroxyacid bleach of claim 4 wherein said buffer is selected from the alkali metal, ammonium, and alkaline earth salts of borates, nitrates, iodates, hydroxides, carbonates, silicates, and phosphates; organic buffers; and mixtures thereof.
Claim 7
Dependent Claim
126 words
A substantially nonaqueous stable peroxyacid bleach composition comprising: (a) an amount of a surface active peroxyacid having a carbon chain of from about 6 to 20 carbon atoms sufficient to produce 1-100 ppm A.O. in aqueous solution, said peroxyacid tending to undergo extremely rapid solution decomposition in aqueous solution; (b) an amount of at least one surfactant sufficient to produce 1-10,000 ppm surfactant in aqueous solution, said surfactant forming a mixed micelle aqueous solution with said peroxyacid, said mixed micelle resulting in decreased peroxyacid decomposition rates and increased peroxyacid half-life; and (c) a buffer to keep the composition within the range of pH 7-12 when in aqueous solution with detergent; wherein said aqueous solution contains a commercial laundry detergent concentration of about 0.1 to 3.0 grams/liter.
Claim 8
Dependent Claim
126 words
A substantially nonaqueous stable peroxyacid bleach composition comprising: (a) an amount of a surface active peroxyacid having a carbon chain of from about 6 to 20 carbon atoms sufficient to produce 1-100 ppm A.O. in aqueous solution, said peroxyacid tending to undergo extremely rapid solution decomposition in aqueous solution; (b) an amount of at least one surfactant sufficient to produce 1-10,000 ppm surfactant in aqueous solution, said surfactant forming a mixed micelle aqueous solution with said peroxyacid, said mixed micelle resulting in decreased peroxyacid decomposition rates and increased peroxyacid half-life; and (c) a buffer to keep the composition within the range of pH 7-12 when in aqueous solution with detergent; wherein said aqueous solution contains a commercial laundry detergent concentration of about 0.1 to 3.0 grams/liter.
Claim 9
Dependent Claim
22 words
The stable peroxyacid bleach composition of claim 6 wherein said surfactant is selected from anionic, nonionic, amphoteric, zwitterionic surfactants, and mixtures thereof.
Claim 10
Dependent Claim
69 words
The stable peroxyacid bleach composition of claim 6 wherein said peroxyacid is selected from: alpha substituted alkyl diperoxysuccinic acids and alpha or beta monoperoxysuccinic acids of about 6 to 20 carbon atoms in the alkyl group; straight chain monoperoxyacids of about 6 to 20 carbon atoms in the carbon chain; substituted or unsubstituted arylperoxy acids with an alkyl group of about 6 to 20 carbon atoms; and mixtures thereof.
Claim 11
Dependent Claim
24 words
The stable peroxyacid bleach composition of claim 7 wherein said surfactant is selected from alkyl fatty acids, their alkali metal salts and mixtures thereof.
Claim 12
Dependent Claim
30 words
The stable peroxyacid bleach composition of claim 9 wherein said surfactant has an alkyl chain containing a number of carbons approximately greater than or equal to the peroxyacid's carbon chain.
Claim 13
Dependent Claim
27 words
The stable peroxyacid bleach composition of claim 10 wherein said surfactant is selected from lauric, myristic, palmitic and stearic acid, their alkali metal salts and mixtures thereof.
Claim 14
Dependent Claim
15 words
The stable peroxyacid bleach composition of claim 11 wherein said alkali metal salt is potassium.
Claim 15
Independent Claim
111 words
A method for stablizing the solution decomposition rate of substantially nonaqueous peroxyacids comprising: (a) combining an amount of a surface active peroxyacid sufficient to produce 1-100 ppm A.O. in aqueous solution, said peroxyacid tending to undergo extremely rapid solution decomposition in aqueous solution, with an amount of at least one surfactant sufficient to produce 1-10,000 ppm surfactant in aqueous solution; and (b) forming a mixed micelle therebetween in aqueous solution, said mixed micelle causing decreased peroxyacid decomposition rates and increased peroxyacid half-life, said peroxyacid and said surfactant of the combination in (a) being substantially nonaqueous; wherein said aqueous solution contains a commercial laundry detergent concentration of about 0.1 to 3.0 grams/liter.
Claim 16
Independent Claim
111 words
A method for stablizing the solution decomposition rate of substantially nonaqueous peroxyacids comprising: (a) combining an amount of a surface active peroxyacid sufficient to produce 1-100 ppm A.O. in aqueous solution, said peroxyacid tending to undergo extremely rapid solution decomposition in aqueous solution, with an amount of at least one surfactant sufficient to produce 1-10,000 ppm surfactant in aqueous solution; and (b) forming a mixed micelle therebetween in aqueous solution, said mixed micelle causing decreased peroxyacid decomposition rates and increased peroxyacid half-life, said peroxyacid and said surfactant of the combination in (a) being substantially nonaqueous; wherein said aqueous solution contains a commercial laundry detergent concentration of about 0.1 to 3.0 grams/liter.
Claim 17
Dependent Claim
19 words
The method of claim 13 wherein said surfactant is selected from anionic, nonionic, amphoteric, zwitterionic surfactants, and mixtures thereof.
Claim 18
Dependent Claim
25 words
The method of claim 13 wherein said peroxyacid comprises about 0.1 to 20.0% by weight and said surfactant comprises about 0.01 to 80.0% by weight.
Claim 19
Dependent Claim
13 words
The method of claim 13 further comprising the step (c) adding a buffer.
Claim 20
Dependent Claim
32 words
The method of claim 16 wherein said buffer is selected from the alkali metal, ammonium, and alkaline earth salts of borates, nitrates, iodates, hydroxides, carbonates, silicates, phosphates; organic buffers; and mixtures thereof.
Claim 21
Dependent Claim
20 words
The method of claim 13 wherein said peroxyacid has a carbon chain of from about 6 to 20 carbon atoms.
Claim 22
Dependent Claim
66 words
The method of claim 13 wherein said peroxyacid is selected from: alpha substituted alkyl diperoxysuccinic acids and alpha or beta monoperoxysuccinic acids of about 6 to 20 carbon atoms in the alkyl chain; straight chain monoperoxyacids of about 6 to 20 carbon atoms in the carbon chain; substituted or unsubstituted arylperoxy acids with an alkyl group of about 6 to 20 carbon atoms; and mixtures thereof.
Claim 23
Independent Claim
122 words
A method for bleaching soiled fabrics comprising: treating a soiled fabric with a substantially nonaqueous composition which comprises: (a) an amount of a surface active peroxyacid sufficient to produce 1-100 ppm A.O. in aqueous solution, said peroxyacid tending to undergo extremely rapid solution decomposition in aqueous solution; (b) an amount of at least one surfactant sufficient to produce 1-10,000 ppm A.O. in aqueous solution, said surfactant forming a mixed micelle in aqueous solution with said peroxyacid, said mixed micelle causing decreased decomposition rates and increased peroxyacid half-life said (a) and said (b) of said composition being substantially nonaqueous; and removing the soil from said soiled fabric; wherein said aqueous solution contains a commercial laundry detergent concentration of about 0.1 to 3.0 grams/liter.
Claim 24
Independent Claim
122 words
A method for bleaching soiled fabrics comprising: treating a soiled fabric with a substantially nonaqueous composition which comprises: (a) an amount of a surface active peroxyacid sufficient to produce 1-100 ppm A.O. in aqueous solution, said peroxyacid tending to undergo extremely rapid solution decomposition in aqueous solution; (b) an amount of at least one surfactant sufficient to produce 1-10,000 ppm A.O. in aqueous solution, said surfactant forming a mixed micelle in aqueous solution with said peroxyacid, said mixed micelle causing decreased decomposition rates and increased peroxyacid half-life said (a) and said (b) of said composition being substantially nonaqueous; and removing the soil from said soiled fabric; wherein said aqueous solution contains a commercial laundry detergent concentration of about 0.1 to 3.0 grams/liter.
Claim 25
Dependent Claim
19 words
The method of claim 20 wherein said surfactant is selected from anionic, nonionic, amphoteric, zwitterionic surfactants, and mixtures thereof.
Claim 26
Dependent Claim
13 words
The method of claim 20 wherein said composition further comprises (c) a buffer.
Claim 27
Dependent Claim
31 words
The method of claim 21 wherein said buffer is selected from alkali metal, ammonium, and alkaline earth salts of borates, nitrates, iodates, hydroxides, carbonates, silicates, phosphates; organic buffers; and mixtures thereof.
Claim 28
Dependent Claim
20 words
The method of claim 20 wherein said peroxyacid has a carbon chain of from about 6 to 20 carbon atoms.
Claim 29
Dependent Claim
66 words
The method of claim 24 wherein said peroxyacid is selected from: alpha substituted alkyl diperoxysuccinic acids and alpha or beta monoperoxysuccinic acids of about 6 to 20 carbon atoms in the alkyl chain; straight chain monoperoxyacids of about 6 to 20 carbon atoms in the carbon chain; substituted or unsubstituted arylperoxy acids with an alkyl group of about 6 to 20 carbon atoms; and mixtures thereof.
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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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |