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Class Information
Number: 585/858
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By addition of extraneous agent, e.g., solvent, etc. > S containing > Sulfuric acid
Description: Subject matter wherein an agent is H2

Sub-classes under this class:

Class Number Class Name Patents
585/859 Interaction with tertiary olefin 8

Patents under this class:

Patent Number Title Of Patent Date Issued
8142661 Residual stream upgrading in a propylene oxide-styrene monomer process Mar. 27, 2012
7202391 Process for inhibiting polymerization of an aromatic vinyl compound Apr. 10, 2007
7077950 Continuous process for the removal of water from a hydrocarbon stream Jul. 18, 2006
6399847 Method of purifying 1,3,5-triisopropylbenzene Jun. 4, 2002
5866750 Method for removal of metal alkoxide compounds from liquid hydrocarbon Feb. 2, 1999
5675055 Acidification/extraction treatment of waste caustic stream Oct. 7, 1997
5464526 Hydrocracking process in which the buildup of polynuclear aromatics is controlled Nov. 7, 1995
5220105 Process for purifying d-limonene Jun. 15, 1993
5191143 Preparation of isobutylene Mar. 2, 1993
5025112 Purification of cumene recycle streams Jun. 18, 1991
4695671 Tetramethyltetrahydronaphthalene purification process Sep. 22, 1987
4607131 Isolation of 3-methyl-1-butene from a hydrocarbon stream Aug. 19, 1986
4108916 Purification of saturated hydrocarbons Aug. 22, 1978
4098838 Process for obtaining sulfur free pure naphthalene from bituminous coal tar and thionaphthene as a by-product Jul. 4, 1978
3987120 Recovery of mesitylene and ethyltoluenes from petroleum naphtha reformate Oct. 19, 1976

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