Anticorrosive composition

Abstract

The present invention relates to the discovery that melanoidins, and higher molecular weight fractions of products containing melanoidins, provide significant corrosive inhibition, which render these melanoidins suitable for use as anticorrosive agents in corrosive environments. In addition to being highly anticorrosive, the melanoidins of the present invention are environmentally friendly and non-toxic, and can be found in animal food and in human foodstuffs.

1 . An anticorrosive composition comprising:
 a molecular weight fraction of a melanoidin-containing product, wherein said molecular weight fraction comprises substantially all of the available melanoidin species having a molecular weight greater than or equal to 10,000 in said product.   
     
     
         2 . The anticorrosive composition of  claim 1 , wherein said molecular weight fraction comprises substantially all of the available melanoidin species having a molecular weight greater than or equal to 12,400 in said product. 
     
     
         3 . The anticorrosive composition of  claim 1 , wherein said melanoidin-containing product is selected from the group consisting of molasses, corn steep liquor, brewers condensed solubles, and distillers condensed solubles. 
     
     
         4 . The anticorrosive composition of  claim 1 , wherein the source of said melanoidin containing agriculture product or by-product is at least one selected from the group consisting of sugar cane, sugar beets, corn, wheat, barley, and rice. 
     
     
         5 . The anticorrosive composition of  claim 1 , further comprising
 a brine.   
     
     
         6 . The anticorrosive composition of  claim 1 , further comprising
 a chloride salt.   
     
     
         7 . The anticorrosive composition of  claim 6 , wherein said chloride salt is at least one selected from the group consisting of sodium chloride, magnesium chloride, calcium chloride, and potassium chloride. 
     
     
         8 . The anticorrosive composition of  claim 6 , further comprising a low molecular weight carbohydrate having a molecular weight in the range of about 180 to 1500, wherein said carbohydrate is at least one selected from the group consisting of glucose, fructose and higher saccharides based on glucose and/or fructose and mixtures thereof. 
     
     
         9 . The anticorrosive composition of  claim 8 , further comprising a thickener selected from the group consisting of high molecular weight cellulose derivatives and carbohydrates in the range of about 60,000 to 1,000,000 for cellulose derivatives and 10,000 to 50,000 for carbohydrates.