Ice melter and method of making same

Abstract

This invention relates to a composition for melting ice, particularly for melting ice from driveways, sidewalks and the like. The composition includes a salt, more particularly sodium and/or potassium chloride and an amide such as urea. The method of making the composition includes the steps of (1) sizing the salt, (2) spraying a liquid amide thereon, and (3) drying the resultant composition.

What is claimed is: 
     
       1. An ice melter composition for use on driveways, sidewalks and the like comprising: a salt combination and an amide,   said salt combination comprising a mixture of sodium and potassium chloride and said amide is urea,   said sodium chloride being present in the ratio by weight of 3 to 1 of said potassium chloride.   
     
     
       2. An ice melter composition for use on driveways, sidewalks and the like comprising: a salt combination and an amide,   said salt combination comprising a mixture of 3 parts by weight of sodium chloride to 1 part by weight of potassium chloride and said amide being urea which is present and coated on said salt combination in from about 1% to about 4% by weight of said salt combination.   
     
     
       3. The method of making an ice melter composition comprising the steps of: (1) sizing the salt portion of said composition,   (2) spraying the sized salt with a liquid amide, and   (3) drying said composition, said salt being a mixture of sodium and potassium .[.choride.]. .Iadd.chloride.Iaddend.,   said amide being urea, which is present in from about 1% to about 4% by weight of said salt,   said urea being present in from about 1% to about 4% by weight of said sodium-potassium chloride mixture. .Iadd.4. An ice melter composition for use on driveways, sidewalks, and the like comprising:     a salt combination and an amide,   said salt combination comprising a soluble mixture of sodium chloride and potassium chloride, of which mixture each said chloride is a substantial component by weight,   said salt combination being in particulate form sized to substantially lie in the range of from about 1.19 millimeters to about 2.36 millimeters,   and said amide comprising urea which is present and coated on the particulate material making up said salt combination in the range of from about 1 percent to about 4 percent by weight of said salt combination. .Iaddend. .Iadd.5. The method of making an ice melter composition comprising steps of:   (1) sizing the salt portion of said composition,   (2) spraying the sized salt with a liquid amide, and   (3) drying said composition, said salt being a soluble mixture of sodium and potassium chloride in particulate form sized to substantially lie in the range of from about 1.19 millimeters to about 2.36 millimeters,   said amide being urea which is present in said composition in from about 1 percent to about 4 percent by weight of said salt.