Invention Grant
- Patent Title: Chemical inhibition of pitting corrosion in methanolic solutions containing an organic halide
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Application No.: US14514626Application Date: 2014-10-15
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Publication No.: US09732430B2Publication Date: 2017-08-15
- Inventor: Zhengwei Liu , Sunder Ramachandran , Vaithilingam Panchalingam , Timothy Z. Garza , Paul Robert Stead , Stuart Edward Cook , Gordon T. Rivers , Vu Thieu , Heather McEachern
- Applicant: Baker Hughes Incorporated
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agency: Mossman, Kumar & Tyler, P.C.
- Main IPC: C23F11/12
- IPC: C23F11/12 ; C23F11/00 ; C23F11/08 ; C23F11/10

Abstract:
Pitting corrosion of stainless steel occurs in solutions of organic acid, such as tartaric acid, in an electrolyte solution with methanol. However, methanolic solutions containing at least one organic halide and at least one organic hydroxyacid and some water provide reduced pitting corrosion of stainless steel. The organic hydroxyacid may be a hydroxy acid containing 2 to 10 carbon atoms with at least one hydroxyl group and at least one carboxylic acid group, in a non-limiting example, glycolic acid. The pH of the methanolic solution may range from about 3.5 to about 8.
Public/Granted literature
- US20150118105A1 CHEMICAL INHIBITION OF PITTING CORROSION IN METHANOLIC SOLUTIONS CONTAINING AN ORGANIC HALIDE Public/Granted day:2015-04-30
Information query
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