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Class Information
Number: 568/756
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 > Of phenol having acyclic polycarbon hydrocarbyl group bonded directly to the benzene ring
Description: Processes wherein the compound separated has an acyclic group which consists of hydrogen and carbon, with at least two carbons, bonded directly to the benzene ring.

Patents under this class:

Patent Number Title Of Patent Date Issued
8519193 Dialkyl phenols Aug. 27, 2013
8507732 Purification of tris-hydroxyaryl compounds Aug. 13, 2013
8283501 Optically active 2,2'-biphenol derivative and production method of same Oct. 9, 2012
6451879 Phenolic resin, epoxy resin, and processes for producing these Sep. 17, 2002
6407150 Processes for producing phenolic resin and epoxy resin Jun. 18, 2002
6258901 Process for producing lightly colored p-vinylphenol polymer Jul. 10, 2001
5705039 Process for purifying a 2,6-dialkylphenol Jan. 6, 1998
5672776 Method for purifying 1,1,1-tris(4-hydroxyphenyl)-alkanes Sep. 30, 1997
5591311 Process for purifying a 2,6-dialkylphenol Jan. 7, 1997
5589598 Process of purification of 2,6-diisopropylphenol Dec. 31, 1996
5476973 Stable m-vinylphenol composition, and methods of stabilizing and purifying m-vinylphenol Dec. 19, 1995
5354429 Natural cresylic acid processing Oct. 11, 1994
5202505 Purification of hydroxyphenyl alkanes Apr. 13, 1993
5175376 Process for the purification of 2,6-diisopropyl phenol Dec. 29, 1992
5094722 Process for the purification of a dimethylphenol isomer Mar. 10, 1992
5091058 Purified para-cumylphenol Feb. 25, 1992
4992598 Purification of 1, 1, 1-tris(4'-hydroxyphenyl)ethane Feb. 12, 1991
4987273 Process for the separation of a phenol Jan. 22, 1991
4929770 Aluminum phenoxide catalyst removal May. 29, 1990
4910334 Recovery of overbased alkaline earth metal additives from centrifugates Mar. 20, 1990
4812596 Process for the conversion of t-alkylphenol waste distillation bottoms to para-t-alkylphenol Mar. 14, 1989
4547596 Separation and recovery of alkylated phenols Oct. 15, 1985
4503267 Extraction of phenolics from hydrocarbons Mar. 5, 1985
4496774 Complex formed to separate nitrated phenolic compounds from other phenolic compounds Jan. 29, 1985
4487987 Method of decolorizing mixtures of aminoethylpiperazine, a polyoxypropylenediamine and alkylphenols with N,N-diethylhydroxylamine Dec. 11, 1984
4433181 Process for recovering a crystallization medium Feb. 21, 1984
4429169 Process for separating isopropylated m-cresols Jan. 31, 1984
4423253 Process for separating t-butylated phenols Dec. 27, 1983
4420643 Extraction of phenols from aqueous solutions Dec. 13, 1983
4408083 Method of treating hydroperoxide mixtures Oct. 4, 1983
4385191 Recovery of BF.sub.3 -free alkylphenol product May. 24, 1983
4356330 Method of decolorizing mixtures of T-butyl alkylphenols with N-(2-hydroxyethyl)oxazolidine Oct. 26, 1982
4352944 Treatment of cashew nut shell liquid Oct. 5, 1982
4337369 Method of decolorizing mixtures of t-butyl alkylphenols Jun. 29, 1982
4247721 Process for purification of p-isopropyl phenol Jan. 27, 1981
4236030 Process for recovering phenols from a hydrocarbon mixture containing the same Nov. 25, 1980
4232176 Method of removing aluminum-containing catalyst from phenol alkylation products Nov. 4, 1980
4138591 Manufacture of alkylphenols Feb. 6, 1979
4113975 Process for purifying alkylphenolz Sep. 12, 1978
4101590 Process for separation and purification of vinylphenol Jul. 18, 1978
4096175 Extraction method Jun. 20, 1978
4054611 Method for the preparation of p-isopropenyl phenol Oct. 18, 1977
3970708 Process for removing aluminum phenoxide catalyst from phenol alkylation products Jul. 20, 1976
3969421 Process for producing ethylphenols Jul. 13, 1976
3940451 Process of recovering BHT values from mother liquors of the crystallization of BHT obtained by alkylating p-cresol with isobutylene Feb. 24, 1976
3939215 Chemical process Feb. 17, 1976

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