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US 12,577,185 B2Granted
Solvent drying solution and processes therfor
AssigneeAquafortus Technologies Limited
InventorsChaitra Prakash, Haiming Tang, Crystal Maddox
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a solvent drying solution and processes therefor. The present disclosure more specifically relates to a solvent drying solution that in use releases water from a solvent mixture. The present disclosure also relates to a process for recovering a solvent drying solution, more specifically to a process for recovering a solvent drying solution by using an osmotic process.
Claims24
A solvent drying solution, the solution comprising:
- a) at least one C1-C7 alkyl amine or ammonium quaternary containing compound;
- or
- b) at least one carboxylic acid containing compound or an alkylsulfonic acid;
- or
- c) at least one straight chain or branched C3-C9 alkyl substituted by —OH;
- or
- d) a combination of a) to c) thereof,
- in a water-containing solvent comprising two or more components independently selected from any combination of integers i), ii), iii) and iv), where:
- i) is a straight, branched or optionally substituted cyclic C4-C9 ether containing compound;
- ii) is a straight chain or branched C3-C9 alkyl substituted by —OH;
- iii) is a straight chain, branched or cyclic C4-C9 ketone or C4-C9 diketone;
- and
- iv) is a straight chain or branched C3-C9 ester containing compound;
- wherein at least one component of the water containing solvent is substantially immiscible with an aqueous solution of 1 molar sodium chloride at or above 20 degrees Celsius and at 1 atmosphere.
11 more elements
Dependencies are inferred from the claim text.