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Class Information
Number: 568/757
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Oxygen containing (e.g., perchlorylbenzene, etc.) > Hydroxy containing (h of -oh may be replaced by a group ia or iia light metal) > Benzene ring containing > Phenols (h of -oh may be replaced by a group ia or iia light metal) > Purification or recovery > Nitrogen or phosphorus containing compound utilized
Description: Processes wherein a nitrogen or phosphorus containing compound is utilized in the separation.










Patents under this class:

Patent Number Title Of Patent Date Issued
7915455 Transition metal complex ligand and olefin polymerization catalyst containing transition metal complex Mar. 29, 2011
7034192 Method for removal of acetol from phenol Apr. 25, 2006
5962751 Phenol tar desalting method Oct. 5, 1999
5840999 Asymmetric benzoxanthene dyes Nov. 24, 1998
4814518 Process for extracting nitrohydroxyaromatics from aqueous solutions Mar. 21, 1989
4766254 Method for maximizing yield and purity of bisphenol A Aug. 23, 1988
4626605 Process for extracting phenols from aqueous solutions Dec. 2, 1986
4418221 Process for treating aqueous solutions containing phenols Nov. 29, 1983
4356330 Method of decolorizing mixtures of T-butyl alkylphenols with N-(2-hydroxyethyl)oxazolidine Oct. 26, 1982
4166772 Extractive distillation separation of cumene and phenol Sep. 4, 1979
4154964 Process for the purification of a phenol May. 15, 1979
4115204 Separation of phenol-, cyclohexanone-, and cyclohexylbenzene-containing mixtures employing an N,N-disubstituted amide Sep. 19, 1978
4115207 Separation of phenol-, cyclohexanone-, and cyclohexylbenzene-containing mixtures employing a trisubstituted phosphate Sep. 19, 1978
4115205 Separation of phenol-, cyclohexanone-, and cyclohexylbenzene-containing mixtures employing an N-substituted lactam Sep. 19, 1978
3965187 Hydrogenation of phenol Jun. 22, 1976











 
 
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