The polyalkalene glycol polymer includes, but is not limited to, polyethylene glycol, methoxypolyethylene glycol, polymethylethylene glycol, polyhydroxypropylene glycol, polypropylene glycol, and polymethylpropylene glycol.
The glycol is preferably ethylene glycol, diethylene glycol, triethylene glycol and mixtures thereof.
The additive is an admixed compound consisting of monoethylene glycol, diethylene glycol and triethylene glycol.
The oligoethyleneglycol residues are preferably selected from the group consisting of methyl diethylene glycol, methyl triethyleneglycol or methyl tetraethylene glycol.
The polar organic solvent may be an oil soluble glycol or glycol ether such as ethylene glycol, diethylene glycol, propylene glycol, polypropylene glycol, and the like.
The polar organic solvent may be an oil soluble glycol or glycol ehter such as ethylene glycol, diethylene glycol, propylene glycol, polypropylene glycol, and the like.
The solvent is selected from water, methanol, ethanol, isopropyl alcohol, 1-butanol, ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butylene glycol, acetone, ethyl acetate, or the combination thereof.
This invention relates to a process for separating ethylene glycol or propylene glycol from mixtures containing the ethylene glycol or the propylene glycol and other polyols using polar compounds; as well as compositions obtained therefrom.
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