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Class Information
Number: 568/788
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) > Acyclic polycarbon hydrocarbyl group bonded directly to the benzene ring > Tertiary butyl group > Preparing by catalytic alkylation > Sulfur containing catalyst
Description: Processes wherein the catalyst contains sulfur in any form.

Patents under this class:

Patent Number Title Of Patent Date Issued
8207380 Alkylated hydroxyaromatic compound substantially free of endocrine disruptive chemicals and method of making the same Jun. 26, 2012
6670513 Process for producing alkylated hydroxyl-containing aromatic compounds Dec. 30, 2003
6255538 Process for the C-alkylation of aromatic hydroxyl compounds Jul. 3, 2001
6049015 Method for C-alkylating hydroxylated aromatic compounds Apr. 11, 2000
5345002 Ethylene alpha-olefin copolymer substituted hydroxy aromatic compounds Sep. 6, 1994
5208390 Process for alkylating aromatic polyols with higher carbon number alpha olefin oligomers May. 4, 1993
5098945 2,4-dimethyl-6-s-alkylphenols Mar. 24, 1992
4973764 Alkylphenols and derivatives thereof via phenol alkylation by cracked petroleum distillates Nov. 27, 1990
4914246 Alkylphenols and derivatives thereof via phenol alkylation by cracked petroleum distillates Apr. 3, 1990
4812596 Process for the conversion of t-alkylphenol waste distillation bottoms to para-t-alkylphenol Mar. 14, 1989
4461916 Process for the production of p-tert-octyl phenol by catalytic alkylation of phenol Jul. 24, 1984
4418222 Continuous phenol alkylation process Nov. 29, 1983
4380677 Preparation of 2,6-di-tert-butyl-4-alkylphenols Apr. 19, 1983
4370506 Terbutylating hydroxyaromatic compounds Jan. 25, 1983
4337369 Method of decolorizing mixtures of t-butyl alkylphenols Jun. 29, 1982
4323713 Preparation of mono-tertiary butylhydroquinone Apr. 6, 1982
4323714 Alkylation of hydroxy-substituted aromatic compounds Apr. 6, 1982
4316996 Discoloration prevention of phenolic antioxidants Feb. 23, 1982
4292450 Selective alkylation of 2,5-xylenol in the presence of 2,4-xylenol Sep. 29, 1981
4249026 Separating 2,5-xylenol from a mixture of 2,5-xylenol and 2,4-xylenol Feb. 3, 1981
4247719 Process for obtaining 2,5-xylenol from a 2,4-/2,5-xylenol mixture Jan. 27, 1981
4236031 Preparation of 5-t-butyl alkyl-substituted phenols Nov. 25, 1980
4236033 Process for the manufacture of p-alkylphenols Nov. 25, 1980
4236032 Preparation of 6-t-butyl alkyl-substituted phenols Nov. 25, 1980
4228311 Selective dealkylation of 4-tertiary-alkyl-2,5-xylenol Oct. 14, 1980
4202199 Manufacture of alkylphenol compounds May. 13, 1980
4144400 Process for the continuous preparation of di-tertiary butylcresols Mar. 13, 1979
4029816 Substituted 2-aminomethyl-6-iodophenols Jun. 14, 1977
3932537 Alkylation of phenols Jan. 13, 1976

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