US3956159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable concentrated liquid peroxygen bleach composition
Assignee: Procter and Gamble Co
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Filing: 1974-11-25
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Granted: 1976-05-11
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Expires: 1994-11-25
Abstract
Abstract A shelf-stable concentrated liquid organic peroxyacid bleach composition comprising a peroxyacid, a ternary solvent system, a stabilizing agent and, preferably, a buffering agent.
Inventors
- 👤 John Paul Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:48
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3937; C11D3/394; C11D3/3947
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
154 words
A storage stabilized concentrated liquid peroxyacid bleach composition, consisting essentially of: a. from about 94% to about 98% by weight of an anhydrous ternary solvent mixture consisting essentially of: i. from 20% to 45% by weight of t-butyl alcohol; ii. from 20% to 40% by weight of ethylene diacetate; iii. from 20% to 40% by weight of glycerol triacetate; b. from about 1% to about 6% by weight of a peroxyacid having the formula ##EQU2## wherein R is an alkylene group containing from 1 to about 12 carbon atoms and X is methyl, chloromethyl, carboxyl, sulfonate or peroxycarboxylate and the water-soluble salts thereof; c. from 0.005% to 0.05% by weight of a stabilizing agent selected from the group consisting of picolinic acid, dipicolinic acid, and quinaldic acid; and d. from 0% to 3% by weight of a pH 6.5 to pH 12 buffering agent selected from the group consisting of phosphates, carbonates and bicarbonates.
Claim 2
Dependent Claim
154 words
A storage stabilized concentrated liquid peroxyacid bleach composition, consisting essentially of: a. from about 94% to about 98% by weight of an anhydrous ternary solvent mixture consisting essentially of: i. from 20% to 45% by weight of t-butyl alcohol; ii. from 20% to 40% by weight of ethylene diacetate; iii. from 20% to 40% by weight of glycerol triacetate; b. from about 1% to about 6% by weight of a peroxyacid having the formula ##EQU2## wherein R is an alkylene group containing from 1 to about 12 carbon atoms and X is methyl, chloromethyl, carboxyl, sulfonate or peroxycarboxylate and the water-soluble salts thereof; c. from 0.005% to 0.05% by weight of a stabilizing agent selected from the group consisting of picolinic acid, dipicolinic acid, and quinaldic acid; and d. from 0% to 3% by weight of a pH 6.5 to pH 12 buffering agent selected from the group consisting of phosphates, carbonates and bicarbonates.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein the peroxyacid is selected from the group consisting of diperazelaic acid, perazelaic acid and diperadipic acid.
Claim 4
Dependent Claim
27 words
The composition of claim 1 wherein the buffering agent is selected from the group consisting of sodium bicarbonate, sodium carbonate, disodium hydrogen phosphate and sodium dihydrogen phosphate.
Claim 5
Dependent Claim
17 words
The composition of claim 3 having a pH within the range of from about 7 to 10.
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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |