US4124356A
Expired / Lapsed
US
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Organophosphorus azides as peroxygen activators
Assignee: FMC Corp
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Filing: 1977-10-03
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Granted: 1978-11-07
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Expires: 1997-10-03
Abstract
Abstract A process of removing soil and/or stains from fabrics by immersing the fabrics in a peroxygen bleach bath containing as a peroxygen activator an organophosphorus azide of the formulae: RR.sub.1 P(O)N.sub.3 and ROR.sub.1 OP (O)N.sub.3 wherein R and R 1 are each selected from the class consisting of phenyl and alkyl radicals. Also described are dry blend compositions containing the bleach bath components.
Inventors
- 👤 John H. Blumbergs
- 👤 Fred R. Scholer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:27
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/393
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
76 words
A process for the low temperature bleaching of stained or soiled fabrics which comprises treating them with an aqueous peroxygen bleaching solution having a pH of about 6 to about 12 and containing as a peroxygen activator therefor, an effective amount of an organophosphorus azide having the formulae: RR.sub.1 P(O)N.sub.3 and ROR.sub.1 OP(O)N.sub.3 wherein R and R 1 are each selected from the group consisting of phenyl radicals and alkyl radicals of to 18 carbon atoms.
Claim 2
Dependent Claim
76 words
A process for the low temperature bleaching of stained or soiled fabrics which comprises treating them with an aqueous peroxygen bleaching solution having a pH of about 6 to about 12 and containing as a peroxygen activator therefor, an effective amount of an organophosphorus azide having the formulae: RR.sub.1 P(O)N.sub.3 and ROR.sub.1 OP(O)N.sub.3 wherein R and R 1 are each selected from the group consisting of phenyl radicals and alkyl radicals of to 18 carbon atoms.
Claim 3
Dependent Claim
21 words
The process according to claim 1 wherein the mole ratio of peroxygen to activator is from about 20:1 to about 1:3.
Claim 4
Dependent Claim
13 words
The process according to claim 2 wherein the peroxygen is sodium perborate tetrahydrate.
Claim 5
Dependent Claim
26 words
The process according to claim 2 wherein the quantity of peroxygen is sufficient to provide from about 2 ppm to about 2000 ppm of active oxygen.
Claim 6
Dependent Claim
14 words
The process according to claim 1 wherein the bleach solution contains a detergent agent.
Claim 7
Dependent Claim
21 words
The process according to claim 1 wherein the pH of the bleach solution is maintained by means of a buffering agent.
Claim 8
Dependent Claim
24 words
The process according to claim 1 wherein the activator is selected from the group consisting of diphenylphosphino azides, diphenyl phosphorazidates and alkylated diphenyl phosphorazidates.
Claim 9
Dependent Claim
53 words
A bleaching composition consisting essentially of a peroxygen bleaching compound and as a peroxygen activator, an effective amount of an organophosphorus azide having the formulae: RR.sub.1 P(O)N.sub.3 and ROR.sub.1 OP(O)N.sub.3 wherein R and R 1 are each selected from the group consisting of phenyl and alkyl radicals of 1 to 18 carbon atoms.
Claim 10
Dependent Claim
53 words
A bleaching composition consisting essentially of a peroxygen bleaching compound and as a peroxygen activator, an effective amount of an organophosphorus azide having the formulae: RR.sub.1 P(O)N.sub.3 and ROR.sub.1 OP(O)N.sub.3 wherein R and R 1 are each selected from the group consisting of phenyl and alkyl radicals of 1 to 18 carbon atoms.
Claim 11
Dependent Claim
14 words
The composition according to claim 8 wherein the peroxygen compound is sodium perborate tetrahydrate.
Claim 12
Dependent Claim
16 words
A detergent composition consisting essentially of a detergent agent and the composition defined in claim 8.
Claim 13
Dependent Claim
24 words
The bleaching composition of claim 8 wherein the activator is selected from the group consisting of diphenylphosphino azides, diphenyl phosphorazidates and alkylated diphenyl phosphorazidates.
Claim 14
Dependent Claim
70 words
A bleaching composition consisting essentially of a peroxygen bleaching compound, an effective amount of an organophosphorus azide having the formulae: RR.sub.1 P(O)N.sub.3 and ROR.sub.1 OP(O)N.sub.3 wherein R and R 1 are each selected from the group consisting of phenyl radical and alkyl radicals of 1 to 18 carbon atoms, and sufficient buffering agent to maintain a pH of about 6 to 12 when the bleaching composition is dissolved in water.
Claim 15
Dependent Claim
70 words
A bleaching composition consisting essentially of a peroxygen bleaching compound, an effective amount of an organophosphorus azide having the formulae: RR.sub.1 P(O)N.sub.3 and ROR.sub.1 OP(O)N.sub.3 wherein R and R 1 are each selected from the group consisting of phenyl radical and alkyl radicals of 1 to 18 carbon atoms, and sufficient buffering agent to maintain a pH of about 6 to 12 when the bleaching composition is dissolved in water.
Claim 16
Dependent Claim
21 words
The bleaching composition of claim 12 wherein the mole ratio of peroxygen to activator is from about 20:1 to about 1:3.
Claim 17
Dependent Claim
49 words
A detergent composition consisting essentially of (a) from about 5% to about 50% by weight of the bleaching composition of claim 12, (b) from about 5% to about 50% by weight of a detergent agent; and (c) from about 1% to about 60% by weight of a detergency builder.
Claim 18
Dependent Claim
31 words
The detergent composition of claim 14 wherein the peroxygen is sodium perborate tetrahydrate and the activator is selected from the group consisting of diphenylphosphino azides, diphenyl phosphorazidates and alkylated diphenyl phosphorazidates.
References Cited (Backward Citations)
US3982892A
Cited
US4025453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |