Deicing compositions and methods of use

Abstract

The invention provides a non-corrosive deicing composition containing a deicing component, a corrosion inhibitor and a protein solution having a pH adjusted to between about pH 5 and about pH 7. Optionally, the deicing composition contains a corrosion inhibitor as well. The invention also provides a method of removing snow and ice from a road surface by applying these deicing compositions to the ice or snow.

1 . A corrosion inhibiting composition, comprising triethanolamine and protein solution having a pH adjusted to between about pH 5 and about pH 7.  
   
   
       2 . The corrosion inhibiting composition of  claim 1 , wherein the composition comprises between about 30% and about 60% triethanolamine.  
   
   
       3 . The corrosion inhibiting composition of  claim 1 , wherein the composition comprises between about 1% and about 15% protein.  
   
   
       4 . The corrosion inhibiting composition of  claim 1 , wherein the protein solution has been at least partially digested.  
   
   
       5 . The corrosion inhibiting composition of  claim 1 , wherein the protein is derived from a source selected from the group consisting of pork hides, pork hooves, beef hides, beef hooves, grain protein and forage protein.  
   
   
       6 . The corrosion inhibiting composition of  claim 1 , wherein the protein solution has a pH adjusted to about pH 6.  
   
   
       7 . The corrosion inhibiting composition of  claim 1 , wherein the protein solution is prepared by mixing a solid protein material with water and heating the mixture to a temperature of between about 40° C. and about 82° C. prior to adjusting the pH.  
   
   
       8 . The corrosion inhibiting composition of  claim 1 , wherein the protein has been digested with a proteolytic enzyme selected from the group consisting of trypsin and chymotrypsin