Chemical inhibition of pitting corrosion in methanolic solutions containing an organic halide

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United States of America Patent

PATENT NO 10392712
APP PUB NO 20170306505A1
SERIAL NO

15644755

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Abstract

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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 hydroxyl-acid 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.

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Patent Owner(s)

  • BAKER HUGHES, A GE COMPANY, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cook, Stuart Edward Houston, US 3 3
Garza, Timothy Z Dickinson, US 5 15
Liu, Zhengwei Sugar Land, US 53 662
McEachern, Heather Webster, US 2 3
Panchalingam, Vaithilingam Friendswood, US 15 116
Ramachandran, Sunder Sugar Land, US 48 402
Rivers, Gordon T Houston, US 37 405
Stead, Paul Robert Sugar Land, US 4 7
Thieu, Vu Houston, US 8 101

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