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US 7,008,561 B2Granted
Ether carboxylic acids based on alkoxylated mercaptobenzothiazoles and use of the same as corrosion inhibitors
AssigneeClariant GmbH
InventorsUwe Dahlmann, Michael Feustel, Rainer Kupfer
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Abstract
The present invention relates to compounds of formula (1) and the salts thereof which correspond to formula (2). In the formulae, A is C2- to C4-alkylene, x is a number from 1 to 100, y is a number from 1 to 4, and R is a cation. The compound of formula (1) and/or formula (2) forms a persistent film on metal surfaces, particularly on metal surfaces under stress in metal working and in the operation of crude oil and natural gas processing.
Claims9
A compound of the formula (1)
- and salts thereof of the formula 2
- in which
- A is C2- to C4-alkylene,
- x is a number from 1 to 100, and
- y is a number from 1 to 4, and
- R is a cation.
3 more elements
Dependencies are inferred from the claim text.