US4128490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenyl sulfonate esters as peroxygen activators
Assignee: FMC Corp
•
Filing: 1977-10-03
•
Granted: 1978-12-05
•
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 a phenyl sulfonate ester of the formula: ##STR1## WHEREIN R is selected from the class consisting of a hydrocarbon radical of 1 to 16 carbon atoms and a heterocyclic radical having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; X is hydrogen or at least one electron withdrawing substituent and n is an integer of from 1 to 5. Also described are dry blend compositions containing the bleach bath components.
Inventors
- 👤 Joseph H. Finley
- 👤 John H. Blumbergs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:15
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/3915
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
124 words
A process for the low temperature bleaching of stained and/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 a phenyl sulfonate ester having the formula: ##STR24## wherein R is selected from the class consisting of a hydrocarbon radical of 1 to 16 carbon atoms and a heterocyclic radical having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; X is hydrogen or at least one electron-withdrawing substituent and n is an integer of from 1 to 5.
Claim 2
Dependent Claim
124 words
A process for the low temperature bleaching of stained and/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 a phenyl sulfonate ester having the formula: ##STR24## wherein R is selected from the class consisting of a hydrocarbon radical of 1 to 16 carbon atoms and a heterocyclic radical having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; X is hydrogen or at least one electron-withdrawing substituent and n is an integer of from 1 to 5.
Claim 3
Dependent Claim
14 words
The process according to claim 1 wherein the bleach solution contains a detergent agent.
Claim 4
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 5
Dependent Claim
17 words
The process according to claim 1 wherein the activator is selected from the class consisting of ##STR25##
Claim 6
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 7
Dependent Claim
13 words
The process according to claim 5 wherein the peroxygen is sodium perborate tetrahydrate.
Claim 8
Dependent Claim
26 words
The process according to claim 5 wherein the quantity of peroxygen is sufficient to provide from about 2 ppm to about 2000 ppm of active oxygen.
Claim 9
Dependent Claim
97 words
A bleaching composition consisting essentially of a peroxygen bleaching compound and as a peroxygen activator, a phenyl sulfonate ester of the formula: ##STR26## wherein R is selected from the class consisting of a hydrocarbon radical of 1 to 16 carbon atoms and a heterocyclic radical having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; X is hydrogen or at least one electron-withdrawing substituent and n is an integer of from 1 to 5.
Claim 10
Dependent Claim
97 words
A bleaching composition consisting essentially of a peroxygen bleaching compound and as a peroxygen activator, a phenyl sulfonate ester of the formula: ##STR26## wherein R is selected from the class consisting of a hydrocarbon radical of 1 to 16 carbon atoms and a heterocyclic radical having 1 ring or 2 fused rings, said ring or rings containing 5 to 6 members of which 1 to 2 are heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; X is hydrogen or at least one electron-withdrawing substituent and n is an integer of from 1 to 5.
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
21 words
The bleaching composition of claim 8 wherein the mole ratio of peroxygen to activator is from about 20:1 to about 1:3.
Claim 14
Dependent Claim
17 words
The bleaching composition of claim 8 wherein the activator is selected from the class consisting of ##STR27##
Claim 15
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 8; (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 16
Dependent Claim
24 words
The detergent composition of claim 13 wherein the peroxygen is sodium perborate tetrahydrate and the activator is selected from the class consisting of ##STR28##
References Cited (Backward Citations)
US3532634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |