Process for producing alkenyl-aromatic hydrocarbon derivatives
AssigneeIdemitsu Kosan Co., Ltd.
InventorsTomiyasu Minokami, Yoshinori Saito, Toshiyuki Tsubouchi
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Abstract
Alkenyl-aromatic hydrocarbon derivatives are prepared by reaction of an aromatic hydrocarbon with an alkenyl-aromatic hydrocarbon in the presence of a heteropoly acid and/or a salt thereof.
Claims16
A process for the preparation of an alkenyl-aromatic hydrocarbon derivative in an alkylation of an aromatic hydrocarbon by reacting an aromatic hydrocarbon with an alkenyl-aromatic hydrocarbon in the presence of a heteropolyacid and/or a salt thereof, which is characterized in that:
- said heteropolyacid and/or salt thereof is subjected to an activation treatment by drying the heteropolyacid and/or the salt thereof under heating at a temperature of not lower than 100.degree. C. or by immersing the heteropolyacid and/or the salt thereof in an aromatic hydrocarbon.
The process for the preparation of an alkenyl-aromatic hydrocarbon derivative in an alkylation of an aromatic hydrocarbon by reacting an aromatic hydrocarbon with an alkenyl-aromatic hydrocarbon in the presence of a heteropolyacid and/or a salt thereof, as claimed in claim 18, wherein:
- said aromatic hydrocarbon is at least one element selected from the group consisting of tetralin, methyl tetralin, naphthalene and 1-methylnaphthalane;
- and
- said alkenyl-aromatic hydrocarbon is at least one element selected from the group consisting of styrene, p-methylstyrene, methylstyrene and p-t-butylstyrene, and at least one element selected from the group consisting of phosphotungstic acid, phosphomolybdic acid, silicatungstic acid, silicamolybdic acid, and/or salts thereof, which is produced by an activation treatment comprising drying the heteropolyacid and/or the salt thereof under heating at a temperature of not lower than 100.degree. C. or immersing the heteropolyacid and/or the salt thereof in at least one aromatic hydrocarbon selected from the group consisting of tetralin, methyl tetralin, naphthalene and methylnaphthalane.
Dependencies are inferred from the claim text.