US2014044593A1PendingUtilityA1

Corrosion inhibitor comprising azole and cellulose nanocrystals

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Assignee: GARNER ANDREWPriority: Jul 4, 2012Filed: Jul 4, 2013Published: Feb 13, 2014
Est. expiryJul 4, 2032(~5.9 yrs left)· nominal 20-yr term from priority
Inventors:Andrew Garner
C10M 171/06C10N 2040/22C10M 145/40C10M 173/00C10M 2209/12C10N 2030/12C10N 2020/063C23F 11/173B82Y 30/00C23F 11/149
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Claims

Abstract

The present invention relates to a corrosion inhibitor. The corrosion includes an azole and a plurality of cellulose nanocrystals. The cellulose nanocrystals are combined with monovalent cationic counterions according to one aspect. The monovalent cationic counterions are sodium ions according to one example. The cellulose nanocrystals may be in dried solid form. According to a further aspect, there is provided a process for the use of cellulose nanocrystals in inhibiting corrosion. The process includes the step of providing an azole. The process further includes the step of adding cellulose nanocrystals to the azole. According to another aspect, there is provided a process for inhibiting corrosion of metal equipment where water can reside. The process includes adding an effective corrosion inhibiting amount of a corrosion inhibitor composition. The corrosion inhibitor composition includes an azole and cellulose nanocrystals.

Claims

exact text as granted — not AI-modified
1 . A corrosion inhibitor comprising:
 an azole; and   a plurality of cellulose nanocrystals.   
     
     
         2 . The corrosion inhibitor as claimed in  claim 1  wherein the cellulose nanocrystals are in dried solid form. 
     
     
         3 . The corrosion inhibitor as claimed in  claim 1  wherein the cellulose nanocrystals are combined with monovalent cationic counterions. 
     
     
         4 . The corrosion inhibitor as claimed in  claim 1 , wherein the cellulose nanocrystals are in sodium-form. 
     
     
         5 . The corrosion inhibitor as claimed in  claim 3  wherein the monovalent cationic counterions are sodium ions. 
     
     
         6 . The corrosion inhibitor as claimed in  claim 1  for use in inhibiting corrosion in ferrous metals. 
     
     
         7 . The corrosion inhibitor as claimed in  claim 1  for use in inhibiting corrosion in non-ferrous metals. 
     
     
         8 . The corrosion inhibitor as claimed in  claim 1 , wherein the azole is one or more from the group consisting of: tolyltriazole, benzotriazole, and 2-mercaptobenzothiazole. 
     
     
         9 . The corrosion inhibitor as claimed in  claim 1 , wherein the azole is one or more from the group consisting of: tolyltriazole, benzotriazole, 1,2benzisothiazoline-3-1, 2-benzimidazolone, 4,5,6,7-tetrahydrobenzotrazole, tolylimidazolone, 2(5-ethyl-2-pyridyl)benzimidazole, 2-mercaptobenzothiazole. 
     
     
         10 . The corrosion inhibitor as claimed in  claim 1  wherein the azole is tolyltriazole. 
     
     
         11 . A metal-cutting fluid using the corrosion inhibitor as claimed in  claim 1 . 
     
     
         12 . A process for the use of cellulose nanocrystals in inhibiting corrosion, comprising the steps of:
 a) providing an azole; and   b) adding cellulose nanocrystals to the azole.   
     
     
         13 . The process as claimed in  claim 12 , further including adding water to the azole and the cellulose nanocrystals. 
     
     
         14 . The process as claimed in  claim 12 , further including adding the azole and the cellulose nanocrystals to water having salt dissolved therein. 
     
     
         15 . The process as claimed in  claim 13 , further including dispersing the azole and cellulose nanocrystals within the water. 
     
     
         16 . The process as claimed in  claim 12  for inhibiting corrosion of metal equipment where water can reside, the process including adding an effective corrosion inhibiting amount of the azole and the cellulose nanocrystals. 
     
     
         17 . A corrosion inhibitor consisting essentially of:
 an azole; and   a plurality of cellulose nanocrystals.   
     
     
         18 . The corrosion inhibitor as claimed in  claim 17 , wherein the azole is one or more from the group consisting of: tolyltriazole, benzotriazole, and 2-mercaptobenzothiazole. 
     
     
         19 . The corrosion inhibitor as claimed in  claim 17 , wherein the azole is one or more from the group consisting of: tolyltriazole, benzotriazole, 1,2benzisothiazoline-3-1, 2-benzimidazolone, 4,5,6,7-tetrahydrobenzotrazole, tolylimidazolone, 2(5-ethyl-2-pyridyl)benzimidazole, and 2-mercaptobenzothiazole. 
     
     
         20 . The corrosion inhibitor as claimed in  claim 17  wherein the azole is tolyltriazole.

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