| 摘要 |
The invention relates to an additive, the use thereof and a method for inhibiting the seeding, growth and/or agglomeration of gas hydrates, whereby an effective amount of an inhibitor is added to a multi-phase mixture, comprising water, gas and, optionally, condensate, which tends to form hydrates or a drilling fluid which tends to form gas hydrates. Said inhibitor contains doubly alkoxylated quaternary ammonium compounds, whereby compounds of formula (1), where R<1>, R<2 >independently=groups of formula -(B)-(O-A)n-O-CO-R<5 >(2), or -(A-O)n-(C)-CO-O-R<5 >(3), R<3>=C1 to C30 alkyl or C2 to C30 alkenyl, R<4>=an organic group with 1 to 100 carbon atoms, optionally containing heteroatoms, R<5>=C1 to C30 alkyl or C2 to C30 alkenyl, n=1 to 20; A=a C2 to C4 alkylene group, B=a C1 to C10 alkylene group, C=a C1 to C6 alkylene group and X=an anion, are used as gas hydrate inhibitors.
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