Extraction method
First Claim
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1. The method of resolving a mixture of a nonionic surfactant and an anionic surfactant existing in an aqueous media, said nonionic surfactant having a structural formula as follows:
- ##STR7## where R is a C1 -C22 alkyl group, n is an integer of 1-3, R is H or CH3, and z is an integer of 1-40, said anionic surfactant having a structural formula as follows;
##STR8## where R, R1, n and z have a significance as above, R3 is ethylene or propylene and A is a cation;
which comprises the step of treating said aqueous mixture with at least an effective amount of cyclohexanone sufficient to dissolve said nonionic surfactant in said cyclohexanone and separating out said solution of nonionic surfactant in cyclohexanone from a remaining solution of anionic surfactant in water.
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Abstract
Covers a method of separating a nonionic surfactant from an anionic surfactant by use of cyclohexanone.
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Citations
5 Claims
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1. The method of resolving a mixture of a nonionic surfactant and an anionic surfactant existing in an aqueous media, said nonionic surfactant having a structural formula as follows:
- ##STR7## where R is a C1 -C22 alkyl group, n is an integer of 1-3, R is H or CH3, and z is an integer of 1-40, said anionic surfactant having a structural formula as follows;
##STR8## where R, R1, n and z have a significance as above, R3 is ethylene or propylene and A is a cation;
which comprises the step of treating said aqueous mixture with at least an effective amount of cyclohexanone sufficient to dissolve said nonionic surfactant in said cyclohexanone and separating out said solution of nonionic surfactant in cyclohexanone from a remaining solution of anionic surfactant in water. - View Dependent Claims (2, 3, 4, 5)
- ##STR7## where R is a C1 -C22 alkyl group, n is an integer of 1-3, R is H or CH3, and z is an integer of 1-40, said anionic surfactant having a structural formula as follows;
Specification