Title:
PRODUCTION OF DIHYDROXYBENZENE AND DIISOPROPYLBENZENE DICARBINOL
Document Type and Number:
Japanese Patent JP3492052
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a dihydroxybenzene(DHB) and diisopropylbenzene dicarbinol (DCA) simultaneously by using a diisopropylbenzene (DIPB) as feedstock and by making use of a diisopropylbenzene hydroxyhydroperoxide (CHPO) as an intermediate byproduct.
SOLUTION: The DHB and DCA are obtained simultaneously through the following processes: oxidation process: DIPB is subjected to air oxidation to produce a liquor containing both the corresponding diisopropylbenzene dihydroperoxide (DHPO) and CHPO; 2nd process: the liquor is subjected to extraction with an aqueous sodium hydroxide solution followed by an organic solvent to separate DHPO and CHPO, respectively; decomposition process: the DHPO is decomposed in the presence of an acid catalyst into DHB; and reduction process: the CHPO is reduced into DCA.
Inventors:
Toshio Nakayama
Masaru Ishino
Tokumasu
Masaru Ishino
Tokumasu
Application Number:
JP30402795A
Publication Date:
February 03, 2004
Filing Date:
November 22, 1995
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
B01J23/44; B01J27/02; C07B61/00; C07C27/00; C07C27/12; C07C29/132; C07C33/26; C07C37/58; C07C39/08; C07C407/00; C07C409/02; (IPC1-7): C07C39/08; B01J23/44; B01J27/02; C07B61/00; C07C27/00; C07C27/12; C07C29/132; C07C33/26; C07C37/58; C07C407/00; C07C409/02
Domestic Patent References:
| JP2719A | ||||
| JP5620532A |
Attorney, Agent or Firm:
Takashi Kuboyama (2 outside)
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