Patent ID: 9222174
Filing Date: 2015-12-29
Classification: B82Y,C10M,C10N,C23F

Abstract:
1. The use of acid-form cellulose nanocrystals as a corrosion inhibitor for inhibiting corrosion of a metal object made of steel, the cellulose nanocrystals being obtained via acid hydrolysis, each of said cellulose nanocrystals having a diameter in the range of 4 nm to about 60 nm and a length in the range of about 150 nm to about 350 nm, and the use comprising: using sulfuric acid to impart surface sulfate ester groups to the cellulose nanocrystals during the acid hydrolysis; dispersing in a colloidal suspension an effective corrosion inhibiting amount of said cellulose nanocrystals having said surface sulfate ester groups within a composition comprising a carrier essentially consisting of water, the cellulose nanocrystals being in an amount equal to or greater than 0.1 percent by weight of the carrier and equal to or less than 1.0 percent by weight of the carrier; and applying an effective corrosion inhibiting amount of said composition comprising said cellulose nanocrystals having said surface sulfate ester groups to the metal object, the composition functioning to inhibit corrosion of said metal object by between 8.1% and 79.4% when the metal object is exposed to temperature of 25 degrees Celsius.