Deicing composition contianing one or more fluorinated surfactants

• US 5,043,088 A
• Filed: 01/22/1990
• Issued: 08/27/1991
• Est. Priority Date: 01/22/1990
• Status: Expired due to Term

• Current Assignee: The Dow Chemical Company (Dow, Inc.)
• Original Assignee: The Dow Chemical Company (Dow, Inc.)
• Inventors: Falla, Daniel J.
• Primary Examiner(s): Liberman, Paul
• Assistant Examiner(s): Parks, William S.
• Application Number:
  US07/468,452
• Time in Patent Office: 582 Days
• Field of Search: 106/13, 252/70
• US Class Current: 252/70
• CPC Class Codes: C09K 3/185 Thawing materials

Abstract

A deicing composition for use in removing ice from a surface such as the windshield of an automobile, which consists essentially of one or more monohydric alcohols, one or more polyhydric alcohols, and one or more anionic fluorinated surfactants in combination.

Claims

1. A deicing composition which consists essentially of:

one or more polyhydric alcohols;

one or more monohydric alcohols;

from about 0.001 to about 5.0% by weight of

one or more fluorinated surfactants, and not more than 0.5% by weight of water.

2. A deicing composition as defined in claim 1, further comprising a non-staining, nonionic, non-azo polymeric dye.

3. A deicing composition as defined in claim 1, wherein said one or more polyhydric alcohols comprise from about 5 to about 30 percent by weight of the composition.

4. A deicing composition as defined in claim 1, wherein said one or more polyhydric alcohols comprise from about 10 to about 30 percent by weight of the composition.

5. A deicing composition as defined in claim 3, wherein said one or more polyhydric alcohols are selected from the group consisting of the alkylene and dialkylene glycols having from 2 to 4 carbon atoms in the alkyl portion or portions, respectively, thereof.

6. A deicing composition as defined in claim 5, wherein said one or more polyhydric alcohols are selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, and dipropylene glycol.

7. A deicing composition as defined in claim 6, wherein said one or more polyhydric alcohols comprises at least about 10 percent by weight of propylene glycol.

8. A deicing composition as defined in claim 1, wherein said one or more monohydric alcohols comprise from about 70 to about 95 percent by weight of the composition.

9. A deicing composition as defined in claim 8, wherein said one or more monohydric alcohols comprise from about 70 to about 90 percent by weight of the composition.

10. A deicing composition as defined in claim 8, wherein said one or more monohydric alcohols are selected from the group consisting of the monohydric alcohols having from 1 to 3 carbon atoms.

11. A deicing composition as defined in claim 10, wherein said one or more monohydric alcohols comprises at least about 70 percent by weight of isopropanol.

12. A deicing composition as defined in claim 1, wherein said one or more fluorinated surfactants comprise from about 0.001 to about 5 percent by weight of the composition.

13. A deicing composition as defined in claim 12, wherein said one or more fluorinated surfactants comprise from about 0.001 to about 1.0 percent by weight of the composition.

14. A deicing composition as defined in claim 13, wherein said one or more fluorinated surfactants consists essentially of a mixture of mono- and bis-fluoroalkyl phosphates, ammonium salt, complexed with an aliphatic quaternary methosulfate.

15. A deicing composition as defined in claim 14, wherein said mixture comprises from about 0.003 to about 0.17 percent by weight of the composition.

17. A deicing composition as defined in claims 1 or 16, wherein the deicing composition consists substantially entirely of a mixture of one or more polyhydric alcohols, one or more monohydric alcohols, and one or more fluorinated surfactants.

16. A deicing composition which is compatible with the vinyl exterior coverings, butyl rubber seals, windshield wipers and painted surfaces and finishes adjacent an automobile windshield, the deicing composition consisting essentially of:

one or more polyhydric alcohols;

one or more monohydric alcohols from about 0.001 to about 5.0% by weight of;

one or more fluorinated surfactants, and not more than 0.5% by weight of water.