Unsymmetrically substituted dicarboxylic acid diamido ammonium salts and their use for gas hydrate anti-agglomeration
申请人:Clariant International, Ltd.
公开号:US11161804B2
公开(公告)日:2021-11-02
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,
R1 is hydrogen, a C1- to C22 alkyl group or a C3- to C22 alkenyl group,
R2 and R3 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 NR5,
R5 is hydrogen, a C1- to C22 alkyl group or a C3- to C22 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,它包含由式(I)表示的 N烷基 N′(N″,N″-二烷基铵烷基)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、
R1 是氢、C1-至 C22 烷基或 C3-至 C22 烯基、
R2 和 R3 各自独立地是含有 1 至 10 个碳原子的烷基,或共同形成一个具有 5 至 10 个环原子的任选取代的环,其中该环最多可带有 3 个取代基、
R4 是氢、
A 是含有 1 至 18 个碳原子的任选取代的烃基、
B 是含有 2 至 6 个碳原子的亚烷基、
Y 是 NR5、
R5 是氢、C1-至 C22 烷基或 C3-至 C22 烯基,以及
M- 是阴离子、
一种生产式(I)化合物的工艺,使用式(I)的 N烷基 N′-(N″,N″-二烷基铵烷基)二羧酸二酰胺盐作为气体水合物的抗团聚剂、以及一种抑制气体水合物团聚的方法,该方法包括向含有气体和水的流体中加入式(I)的N′(N″,N″-二烷基铵烷基)二羧酸二酰胺盐。