Abstract: There is provided the use of cellulose nanocrystals as a corrosion inhibitor for inhibiting corrosion of a metal object made of steel. The use includes imparting charges onto the cellulose nanocrystals. The use includes dispersing an effective corrosion inhibiting amount of the cellulose nanocrystals so charged within a composition comprising a carrier. The use includes applying an effective corrosion inhibiting amount of the composition to the metal object such that the composition is adapted to inhibit corrosion of the metal object by 8% or more.

Abstract: There is provided the use of cellulose nanocrystals as a corrosion inhibitor for inhibiting corrosion of a metal object made of steel. The use includes using acid to impart ester groups onto the cellulose nanocrystals. The use includes dispersing an effective corrosion inhibiting amount of the cellulose nanocrystals having the ester groups within a composition comprising a carrier essentially consisting of water. The cellulose nanocrystals are provided in an amount equal to or greater than 0.1% by weight of the carrier and equal to or less than 3.0% by weight of the carrier. The use includes applying an effective corrosion inhibiting amount of the composition to the metal object such that the composition is adapted to inhibit corrosion of the metal object by 8% or more.

Abstract: There is provided the use of cellulose nanocrystals as a corrosion inhibitor for inhibiting corrosion of a metal object made of steel. The use includes using acid to impart ester groups onto the cellulose nanocrystals. The use includes dispersing an effective corrosion inhibiting amount of the cellulose nanocrystals having the ester groups within a composition comprising a carrier essentially consisting of water. The cellulose nanocrystals are provided in an amount equal to or greater than 0.1% by weight of the carrier and equal to or less than 3.0% by weight of the carrier. The use includes applying an effective corrosion inhibiting amount of the composition to the metal object such that the composition is adapted to inhibit corrosion of the metal object by 8% or more.

Abstract: The present invention relates to a corrosion inhibitor comprising cellulose nanocrystals. According to another aspect, there is provided a corrosion-inhibiting agent essentially consisting of a plurality of cellulose nanocrystals. The above set out cellulose nanocrystals may be in free form, such as acid-form cellulose nanocrystals, in one embodiment and added to a carrier. The cellulose nanocrystals may be effective in inhibiting ferrous and non-ferrous metals. According to a further aspect, the invention relates to a corrosion-inhibiting composition comprising a corrosion inhibitor and the above set out corrosion-inhibiting agent in an effective combination to inhibit corrosion of metals. The composition may be effective in inhibiting ferrous metals when the cellulose nanocrystals are in either salt or free form. The composition may be effective in inhibiting corrosion of both ferrous and non-ferrous metals when the cellulose nanocrystals are in free form.