Corrosion and gas hydrate inhibitors having improved water solubility and increased biodegradability
View Patent ↗Corrosion and gas hydrate inhibitors having improved water solubility and increased biodegradability The invention thus provides the use of compounds of the formula (1) where R 1 , R 2 are each independently C 1 - to C 22 -alkyl, C 2 - to C 22 -alkenyl, C 6 - to C 30 -aryl or C 7 - to C 30 -alkylaryl, R 3 is C 1 - to C 22 -alkyl, C 2 - to C 22 -alkenyl, C 6 - to C 30 -aryl or C 7 - to C 30 -alkylaryl, —CHR 5 —COO − or —O − , R 4 is M, hydrogen or an organic radical which optionally contains heteroatoms and has from 1 to 100 carbon atoms, B is an optionally substituted C 1 - to C 10 -alkylene group, D is an ethylene group substituted by an organic radical having from 1 to 600 carbon atoms, X, Y are each independently O or NR 6 , R 5 , R 6 are each independently hydrogen, C 1 - to C 22 -alkyl, C 2 - to C 22 -alkenyl, C 6 - to C 30 -aryl or C 7 - to C 30 -alkylaryl, and M is a cation as corrosion and gas hydrate inhibitors, and also the compounds of formula 1.
1. A compound of formula (1)
where
R 1 , R 2 are each independently C 1 - to C 22 -alkyl, C 2 - to C 22 -alkenyl, C 6 - to C 30 -aryl or C 7 - to C 30 -alkylaryl,
R 3 is C 1 - to C 22 -alkyl, C 2 - to C 22 -alkenyl, C 6 - to C 30 -aryl or C 7 - to C 30 -alkylaryl, —CHR 5 —COO − or —O − ,
R 4 is M, hydrogen or an organic radical having from 1 to 100 carbon atoms,
B is a straight-chain or branched C 1 - to C 10 -alkylene group,
D is an ethylene group substituted by an organic radical having from 1 to 600 carbon atoms,
X, Y are each independently O or NR 6 ,
R 5 , R 6 are each independently hydrogen, C 1 - to C 22 -alkyl, C 2 - to C 22 -alkenyl, C 6 - to C 30 -aryl or C 7 - to C 30 -alkylaryl, and
M is a cation.
2. The compound of claim 1 , wherein R 4 contains hetero atoms.