US4410599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for reducing the freeze-adherence of particulate minerals to the walls of transport bins and the like
Assignee: ChampionX LLC
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Filing: 1982-03-08
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Granted: 1983-10-18
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Expires: 2002-03-08
Abstract
Abstract A side-release composition for use in facilitating the discharge of a frozen cargo of particulate mineral material comprises brine and a sufficient amount of polymeric ethylene oxide in the brine to form a gel upon exposure to temperatures of less than about 65 DEG F.
Inventors
- 👤 William J. Roe
- 👤 Jacqueline L. Perisho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:58
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/08; C; C09; C09K; C09K3/00; C09K3/18; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
137 words
The method of reducing the freeze-adherence of coarse mineral particles to the metal surfaces of shipping containers and the like, which method comprises the step of applying to said surfaces a coating composition comprising brine and a sufficient amount of polymeric ethylene oxide in said brine to form a gel upon exposure to temperatures of less than about 65° F., wherein said brine is a water solution of an alkali metal or alkaline earth metal salt, wherein said salt is present in said brine in a concentration of about 10% to about 35% by weight, wherein said polymeric ethylene oxide is a homopolymer having a molecular weight of between about 100,000 and about 600,000, and wherein said polymeric ethylene oxide is present in said brine in a concentration of between about 0.2% and about 3.0% by weight.
Claim 2
Independent Claim
137 words
The method of reducing the freeze-adherence of coarse mineral particles to the metal surfaces of shipping containers and the like, which method comprises the step of applying to said surfaces a coating composition comprising brine and a sufficient amount of polymeric ethylene oxide in said brine to form a gel upon exposure to temperatures of less than about 65° F., wherein said brine is a water solution of an alkali metal or alkaline earth metal salt, wherein said salt is present in said brine in a concentration of about 10% to about 35% by weight, wherein said polymeric ethylene oxide is a homopolymer having a molecular weight of between about 100,000 and about 600,000, and wherein said polymeric ethylene oxide is present in said brine in a concentration of between about 0.2% and about 3.0% by weight.
Claim 3
Dependent Claim
12 words
The method according to claim 1 wherein said salt is a chloride.
Claim 4
Dependent Claim
12 words
The method according to claim 2 wherein said chloride is magnesium chloride.
Claim 5
Dependent Claim
32 words
The method of reducing the freeze-adherence of coarse mineral particles according to claim 1 wherein said composition is applied when said surfaces are at a temperature of less than about 40° F.
Claim 6
Dependent Claim
40 words
The method of reducing the freeze-adherence of coarse mineral particles according to claim 1 wherein said brine and said polymeric ethylene oxide are stored separately and mixed together at a delivery nozzle at the time of application to said surfaces.
References Cited (Backward Citations)
JPS5355213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |