US4439337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method for preventing freezing together of various surfaces
Assignee: Dow Chemical Co
•
Filing: 1981-11-20
•
Granted: 1984-03-27
•
Expires: 2001-11-20
Abstract
Abstract A surface which is to be contacted with another surface, e.g., a particulate material, in the presence of moisture (water) which is subject to freezing, is coated with a composition containing water and substantially water soluble components comprising (1) a polyhydroxy compound or monoalkyl ether thereof, (2) an organic nonvolatile compound having at least one hydrophilic group, (2) being different than (1), optionally a salt which functions to lower the freezing point of water, and a sufficient quantity of an organic polymer which functions to increase the viscosity and tackiness of the composition sufficient to retain the composition on non-horizontal surfaces to freeze proof the same.
Inventors
- 👤 Kenneth H. Nimerick
- 👤 Claude T. Copeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:54
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
164 words
A composition comprising in amounts sufficient to provide a composition which when applied to a surface reduces the tendency of the surface to become frozen to another surface in the presence of moisture under freezing conditions: at least one of substantially water soluble components (1), (2), (3) comprising (1)about 5.0 to about 95.0 percent a polyhydroxy compound or monoalkyl ether thereof, (2) about 0.1 to about 10.0 percent an organic non-volatile compound having at least one hydrophilic group, (2) being different than (1), (3) optionally about 0.1 to about 45.0 percent a salt which functions to reduce the freezing point of water, (4) an organic polymer which functions to increase the viscosity and tackiness of the composition sufficiently to maintain the composition on a non-horizontal surface for a sufficient period of time to function to reduce the tendency of a surface to become frozen to another surface in the presence of moisture under freezing conditions and (5) about 5.0 to about 75 percent water.
Claim 2
Dependent Claim
164 words
A composition comprising in amounts sufficient to provide a composition which when applied to a surface reduces the tendency of the surface to become frozen to another surface in the presence of moisture under freezing conditions: at least one of substantially water soluble components (1), (2), (3) comprising (1)about 5.0 to about 95.0 percent a polyhydroxy compound or monoalkyl ether thereof, (2) about 0.1 to about 10.0 percent an organic non-volatile compound having at least one hydrophilic group, (2) being different than (1), (3) optionally about 0.1 to about 45.0 percent a salt which functions to reduce the freezing point of water, (4) an organic polymer which functions to increase the viscosity and tackiness of the composition sufficiently to maintain the composition on a non-horizontal surface for a sufficient period of time to function to reduce the tendency of a surface to become frozen to another surface in the presence of moisture under freezing conditions and (5) about 5.0 to about 75 percent water.
Claim 3
Dependent Claim
25 words
The composition of claim 1 wherein sufficient quantity of Component (4) to impart to the composition a viscosity of about 25 to about 1500 centipoise.
Claim 4
Dependent Claim
50 words
The composition of claim 1 wherein Component (2) is selected from the group of an acetate or a formate and Component (3) is selected from the group of CaCl 2 , MgCl 2 , NaCl, and Component (4) is selected from the group of celluloses, polyethyene oxides or polyacrylamide polymers.
Claim 5
Dependent Claim
68 words
The composition of claim 1 comprising ethylene glycol, about 10 to about 25 percent; propylene glycol, about 10 to about 25 percent; sodium acetate, about 0.1 to about 5.0 percent; calcium chloride, about 5.0 to about 30.0 percent; water, about 20 to about 60 percent; and a sufficient quantity of a hydroxyethyl cellulose polymer to provide a composition having a viscosity of about 25 to about 1500 centipoise.
Claim 6
Dependent Claim
25 words
The composition of claim 4 wherein a sufficient quantity of the polymer is employed to impart a viscosity of about 50 to about 700 centipoise.
Claim 7
Dependent Claim
12 words
The composition of claim 5 wherein the polymer is a polyethylene oxide.
Claim 8
Dependent Claim
16 words
The composition of claim 6 wherein the polymer has a molecular weight of about four million.
Claim 9
Dependent Claim
46 words
A method of freeze proofing a surface subject to having bonded thereto frozen water which comprises applying to the surface prior to freezing the composition of claim 1 in an amount ranging from about 120 cc to about 400 cc per square meter of said surface.
Claim 10
Dependent Claim
16 words
The method of claim 8 wherein the composition of claim 2 is applied to said surface.
Claim 11
Dependent Claim
16 words
The method of claim 8 wherein the composition of claim 3 is applied to said surface.
Claim 12
Dependent Claim
16 words
The method of claim 8 wherein the composition of claim 4 is applied to said surface.
Claim 13
Dependent Claim
16 words
The method of claim 8 wherein the composition of claim 5 is applied to said surface.
Claim 14
Dependent Claim
16 words
The method of claim 8 wherein the composition of claim 6 is applied to said surface.
Claim 15
Dependent Claim
16 words
The method of claim 8 wherein the composition of claim 7 is applied to said surface.
Claim 16
Dependent Claim
45 words
A method of treating a metal surface which is to come in contact with moist particulate coal under freezing conditions which comprises treating said surface with a sufficient amount of the composition of claim 1 to reduce the bonding of frozen coal to said surface.
Claim 17
Dependent Claim
25 words
The method of claim 5 wherein from about 120 cc to about 400 cc of said composition is applied per square meter of said surface.
Claim 18
Dependent Claim
16 words
The method of claim 6 wherein the composition of claim 8 is applied to said surface.
Claim 19
Dependent Claim
16 words
The method of claim 6 wherein the composition of claim 5 is applied to said surface.
References Cited (Backward Citations)
US1968195A
Cited
US2116682A
Cited
US2238776A
Cited
US2436146A
Cited
US4117214A
Cited
SU652200A1
Cited
US4163079A
Cited
US4290810A
Cited
US4254166A
Cited
US4338359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |