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US 11,795,404 B2Granted
Composition for removing sulfur-containing compounds
AssigneeKuraray Co., Ltd.
InventorsNaoya Minamoto, Yuusuke Saitou, Takuo Tsuruta
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Abstract
Provided is a composition for removing a sulfur-containing compound contained in at least one of a liquid and gas, the sulfur-containing compound being at least one selected from the group consisting of hydrogen sulfide and an —SH group-containing compound, the composition containing an aldehyde and an amine whose conjugate acid has a pKa value of 11.3 or higher in water at 25° C.
Claims9
A composition, comprising:
- an aldehyde;
- and
- at least one of an amine of formula (1) and an amine of formula (2):
- wherein
- R1 to R11 are each independently a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, provided that R1, R2, R7, and R8 may be connected to R3, R6, R9, and R11, respectively, to form an alkylene group having 2 to 6 carbon atoms;
- a pKa value of the conjugate acid of the amine of formula (1) and the amine of formula (2) is 11.3 or higher in water at 25° C., and
- the composition is suitable for removing a sulfur-containing compound selected from the group consisting of hydrogen sulfide and an —SH group-containing compound from at least one of a liquid and gas.
4 more elements
Dependencies are inferred from the claim text.