Unsymmetrically Substituted Dicarboxylic Acid Diamido Ammonium Salts And Their Use For Gas Hydrate Anti-Agglomeration
申请人:Clariant International, Ltd.
公开号:US20200109107A1
公开(公告)日:2020-04-09
The instant invention concerns a gas hydrate inhibitor comprising an N alkyl N′ (N″,N″-dialkylammoniumalkyl)dicarboxylic acid diamide salt represented by the formula (I)
wherein
R is an alkyl or alkenyl group having from 8 to 22 carbon atoms,
R
1
is hydrogen, a C
1
- to C
22
alkyl group or a C
3
- to C
22
alkenyl group,
R
2
and R
3
are each independently an alkyl group containing 1 to 10 carbon atoms or together form an optionally substituted ring having 5 to 10 ring atoms, wherein the ring may carry up to 3 substituents,
R4 is hydrogen,
A is an optionally substituted hydrocarbyl group containing from 1 to 18 carbon atoms,
B is an alkylene group having from 2 to 6 carbon atoms,
Y is NR
5
,
R
5
is hydrogen, a C
1
- to C
22
alkyl group or a C
3
- to C
22
alkenyl group, and
M− is an anion,
a process for producing a compound according to formula (I), the use of an N alkyl N′-(N″,N″-dialkylammoniumalkyl)dicarboxylic acid diamide salt of the formula (I) as an anti-agglomerant for gas hydrates, and a method for inhibiting the agglomeration of gas hydrates which comprises the addition of an N alkyl N′ (N′,N′dialkylammmoniumalkyl)dicarboxylic acid diamide salt of the formula (I) to a fluid containing gas and water.
本发明涉及一种气体水合物抑制剂,其包括由式(I)表示的N-烷基N′(N″,N″-二烷基氨基烷基)二羧酸二酰胺盐,其中R是具有8至22个碳原子的烷基或烯基基团,R1为氢、C1至C22烷基基团或C3至C22烯基基团,R2和R3分别是含有1至10个碳原子的烷基基团,或共同形成具有5至10个环原子的可选取代环,其中该环可携带最多3个取代基,R4为氢,A为含有1至18个碳原子的可选取代的烃基团,B为具有2至6个碳原子的亚烷基基团,Y为NR5,R5为氢、C1至C22烷基基团或C3至C22烯基基团,M-为阴离子,本发明还涉及一种制备式(I)化合物的方法,使用式(I)的N-烷基N′(N″,N″-二烷基氨基烷基)二羧酸二酰胺盐作为气体水合物的抗凝聚剂,以及一种抑制气体水合物凝聚的方法,其包括将式(I)的N-烷基N′(N′,N′-二烷基氨基烷基)二羧酸二酰胺盐添加到含气体和水的流体中。