US3899588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rot and mildew prevention employing certain alkanoic acid salts
Assignee: WR Grace and Co
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Filing: 1973-10-17
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Granted: 1975-08-12
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Expires: 1993-10-17
Abstract
Abstract An aqueous solution useful for preventing rot and mildew comprising an ammonium, alkali metal, or magnesium salt of an alkanoic acid is prepared by adding liquid anhydrous ammonia, an alkali metal hydroxide, or magnesium hydroxide to an agitated aqueous mixture of water and the alkanoic acid in a cooled reactor.
Inventors
- 👤 Ebbe R Skov
- 👤 Roderick B Judge
- 👤 Geoffrey Hemphill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:04
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/41; C07C51/412; A; A23; A23K; A23K30/00; A23K30/10; A23K30/15
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A PROCESS FOR PREPARING A LIQUID SOLUTION USEFUL FOR PREVENTING ROT AND MILDEW FROM FORMING ON SILAGE OR SEEDS COMPRISING: A. FORMING A FIRST MIXTURE BY ADMIXTING WATER AND AN ALKANOIC ACID HAVING 2-10 CARBONS IN A MIXING AND REACTING ZONE HAVING A COOLING MEANS, AN UPPER PORTION, A LOWER PORTION, AND AN AGITATING MEANS POSITIONED IN AT LEAST THE LOWER PORTION, THE MOLE RATIO OF WATER TO ALKANOIC ACID BEING 1:0. 16-0. 36, B. FEEDING LIQUID ANHYDROUS AMMONIA INTO THE BOTTOM OF THE MIXING AND REACTING ZONE AND AGITATING THE FIRST MIXTURE AND THE RESULTING REACTING MIXTURE THEREIN WHILE MAINTAINING THE TEMPERATURE OF SAID REACTING MIXTURE AT ABOUT 25*-95*C, THE LIQUID ANHYDROUS AMMONIA BEING ADDED IN AN AMOUNT TO PROVIDE ABOUT 0.85-0.95 MOLES OF AMMONIA PER MOLE OF SAID ALKANOIC ACID, AND C. REMOVING THE RESULTING LIQUID SOLUTION FROM THE MIXING AND REACTING ZONE AND RECOVERING SAID SOLUTION.
Claim 2
Dependent Claim
149 words
A PROCESS FOR PREPARING A LIQUID SOLUTION USEFUL FOR PREVENTING ROT AND MILDEW FROM FORMING ON SILAGE OR SEEDS COMPRISING: A. FORMING A FIRST MIXTURE BY ADMIXTING WATER AND AN ALKANOIC ACID HAVING 2-10 CARBONS IN A MIXING AND REACTING ZONE HAVING A COOLING MEANS, AN UPPER PORTION, A LOWER PORTION, AND AN AGITATING MEANS POSITIONED IN AT LEAST THE LOWER PORTION, THE MOLE RATIO OF WATER TO ALKANOIC ACID BEING 1:0. 16-0. 36, B. FEEDING LIQUID ANHYDROUS AMMONIA INTO THE BOTTOM OF THE MIXING AND REACTING ZONE AND AGITATING THE FIRST MIXTURE AND THE RESULTING REACTING MIXTURE THEREIN WHILE MAINTAINING THE TEMPERATURE OF SAID REACTING MIXTURE AT ABOUT 25*-95*C, THE LIQUID ANHYDROUS AMMONIA BEING ADDED IN AN AMOUNT TO PROVIDE ABOUT 0.85-0.95 MOLES OF AMMONIA PER MOLE OF SAID ALKANOIC ACID, AND C. REMOVING THE RESULTING LIQUID SOLUTION FROM THE MIXING AND REACTING ZONE AND RECOVERING SAID SOLUTION.
Claim 3
Dependent Claim
16 words
The process of claim 1 in which the alkanoic acid has 4 or 5 carbon atoms.
Claim 4
Dependent Claim
13 words
The process of claim 2 in which the alkanoic acid is isobutyric acid.
Claim 5
Dependent Claim
13 words
The process of claim 2 in which the alkanoic acid is valeric acid.
Claim 6
Dependent Claim
38 words
A method for preventing rot and mildew from forming on silage or seeds comprising applying a rot and mildew preventing amount of the liquid solution prepared by the process of claim 1 to the silage or the seeds.
Claim 7
Dependent Claim
38 words
A method for preventing rot and mildew from forming on silage or seeds comprising applying a rot and mildew preventing amount of the liquid solution prepared by the process of claim 3 to the silage or the seeds.
Claim 8
Dependent Claim
38 words
A method for preventing rot and mildew from forming on silage or seeds comprising applying a rot and mildew preventing amount of the liquid solution prepared by the process of claim 4 to the silage or the seeds.
References Cited (Backward Citations)
US3595665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |