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Class Information
Number: 585/806
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By plural serial diverse separations > To recover aromatic > Having unsaturated or one-c side-chain
Description: Subject matter wherein the aromatic hydrocarbon has a methyl or an unsaturated side-chain, e.g., styrene, etc.










Patents under this class:

Patent Number Title Of Patent Date Issued
8648227 Method for extracting pure styrene from a pyrolysis benzine fraction Feb. 11, 2014
8362313 Processes and systems for recovery of styrene from a styrene-containing feedstock Jan. 29, 2013
7956157 Processes using dividing wall distillation column Jun. 7, 2011
6348136 Method and apparatus for the purification of vinyl aromatic compounds Feb. 19, 2002
6100439 Styrene caustic wash extraction aid Aug. 8, 2000
5877385 Process including extractive distillation and/or dehydrogenation to produce styrene from petroleum feedstock including ethyl-benzene/xylene mixtures Mar. 2, 1999
5849982 Recovery of styrene from pyrolysis gasoline by extractive distillation Dec. 15, 1998
5106459 Separation of p-menthane from p-cymene by extractive distillation Apr. 21, 1992
5012034 Process for separating styrene from styrene-containing hydrocarbon streams Apr. 30, 1991
4966656 Separation of styrene from ethyl benzene or o-xylene by azeotropic or extractive distillation with esters Oct. 30, 1990
4959128 Separation of styrene from ethyl benzene by extractive distillation Sep. 25, 1990
4791235 Process for separating 2,6-dimethylnaphthalene Dec. 13, 1988
4683033 Purification of iodine-containing mixtures and compositions useful therefor Jul. 28, 1987
4514261 Refining of tertiary butylstyrene Apr. 30, 1985
4469558 Apparatus for distilling vinylaromatic compounds Sep. 4, 1984
4379027 Selective hydrogenation of vinyltoluene Apr. 5, 1983
4273622 Method of treating alpha-methylbenzylalcohol dehydration products Jun. 16, 1981
4272344 Polymerization inhibitor for vinyl aromatic compounds Jun. 9, 1981
4227891 Recovery of hydrocarbon vapors from air Oct. 14, 1980
4201633 Separating aromatic hydrocarbons from mixtures containing them May. 6, 1980
4186059 Dehydration of solvent used in oil dewaxing-deoiling processes Jan. 29, 1980
4129605 Recovering styrene by complexing with copper(I) sulfonates Dec. 12, 1978
4128594 Process for the purification of alkyl aromatics Dec. 5, 1978
4115208 Recovery of styrene from cracked hydrocarbon fractions Sep. 19, 1978











 
 
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