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Class Information
Number: 585/859
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By addition of extraneous agent, e.g., solvent, etc. > S containing > Sulfuric acid > Interaction with tertiary olefin
Description: Subject matter wherein the purification or separation is accomplished by interengagement of the sulfuric side with an olefin which has a double bond attached to a tertiary carbon atom, that is, a carbon atom which bears no hydrogen, the interengagement being a reaction between the two materials, a dissolving of one in the other, etc.

Patents under this class:

Patent Number Title Of Patent Date Issued
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
5191143 Preparation of isobutylene Mar. 2, 1993
4607131 Isolation of 3-methyl-1-butene from a hydrocarbon stream Aug. 19, 1986
4163697 Process for obtaining isobutylene of a purity higher than 99.5 weight percent Aug. 7, 1979
4018843 Process for the obtaining of isobutylene of high purity Apr. 19, 1977
3983182 Alkali metal organic compounds and their method of preparation Sep. 28, 1976
3979474 Process for separating isobutylene from C.sub.4 hydrocarbon mixtures Sep. 7, 1976

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