Corrosion and gas hydrate inhibitors having improved water solubility and increased biodegradability
AssigneeClariant GmbH
InventorsUwe Dahlmann, Michael Feustel
Life of this patent
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Abstract
The invention provides the compounds of the formula (1) 1 where R1 is C1- to C22-alkyl, C2- to C22-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl, —CHR5—COO− or —O−, R2 is hydrogen —CH3 or —OH, R3, R4 are each independently C1- to C22-alkyl, C2- to C22-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl, R5 is hydrogen, C1- to C22-alkyl or C2- to C22-alkenyl, A is a C2- to C4-alkylene group, D is a C2- to C5-alkylene group which may contain one or two heteroatoms, m is a number from 0 to 30, n is a number from 1 to 18, and also their use as corrosion and gas hydrate inhibitors.
Claims9
A compound of the formula (1)
- 8
- where
- R1 is C1- to C22-alkyl, C2- to C22-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl, —CHR5—COO− or —O−,
- R2 is hydrogen —CH3 or —OH,
- R3, R4 are each independently C1- to C22-alkyl, C2- to C22-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl,
- R5 is hydrogen, C1- to C22-alkyl or C2- to C22-alkenyl,
- A is a C2- to C4-alkylene group,
- D is a C2- to C5-alkylene group which may contain one or two heteroatoms,
- m is a number from 0 to 30,
- n is a number from 1 to 18.
The use of compounds of the formula 1 in amounts of from 5 to 5000 ppm as corrosion inhibitors and gas hydrate inhibitors.
Dependencies are inferred from the claim text.