The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 1994
Filed:
Sep. 09, 1993
Daniel P Johnston, Pierre, SD (US);
State of South Dakota as represented by the Department of Transportation, Pierre, SD (US);
Abstract
Improved deicer compositions containing crystalline double salts formed from mixtures of relatively low molecular weight carboxylic acids (for example, mixtures of formic acid and acetic acid) are provided. The deicer compositions are generally prepared by neutralizing an aqueous mixture containing at least two carboxylic acids or salts thereof, adjusting the pH to between about 7 and about 10, and drying the aqueous mixture to obtain a double salt crystalline product. Double salts containing sodium cations and double salts containing sodium cations and at least one cation selected from the group consisting of potassium, calcium, and magnesium provide effective deicing compositions which are environmentally safer than conventional deicing compositions.