JPS5748936A - Preparation of 1,4,4a,9a-tetrahydroanthraquinone - Google Patents

Preparation of 1,4,4a,9a-tetrahydroanthraquinone

Info

Publication number
JPS5748936A
JPS5748936A JP12353080A JP12353080A JPS5748936A JP S5748936 A JPS5748936 A JP S5748936A JP 12353080 A JP12353080 A JP 12353080A JP 12353080 A JP12353080 A JP 12353080A JP S5748936 A JPS5748936 A JP S5748936A
Authority
JP
Japan
Prior art keywords
reaction liquid
reaction
naphthoquinone
titled substance
acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12353080A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6212778B2 (enrdf_load_stackoverflow
Inventor
Tatsumi Komatsu
Kenji Usui
Shigeaki Numata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Kasei Chemicals Ltd
Original Assignee
Kawasaki Kasei Chemicals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kawasaki Kasei Chemicals Ltd filed Critical Kawasaki Kasei Chemicals Ltd
Priority to JP12353080A priority Critical patent/JPS5748936A/ja
Publication of JPS5748936A publication Critical patent/JPS5748936A/ja
Publication of JPS6212778B2 publication Critical patent/JPS6212778B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
JP12353080A 1980-09-08 1980-09-08 Preparation of 1,4,4a,9a-tetrahydroanthraquinone Granted JPS5748936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12353080A JPS5748936A (en) 1980-09-08 1980-09-08 Preparation of 1,4,4a,9a-tetrahydroanthraquinone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12353080A JPS5748936A (en) 1980-09-08 1980-09-08 Preparation of 1,4,4a,9a-tetrahydroanthraquinone

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP7630586A Division JPS6289640A (ja) 1986-04-02 1986-04-02 １，４，４ａ，９ａ―テトラヒドロアントラキノンの製造方法

Publications (2)

Publication Number Publication Date
JPS5748936A true JPS5748936A (en) 1982-03-20
JPS6212778B2 JPS6212778B2 (enrdf_load_stackoverflow) 1987-03-20

Family

ID=14862885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12353080A Granted JPS5748936A (en) 1980-09-08 1980-09-08 Preparation of 1,4,4a,9a-tetrahydroanthraquinone

Country Status (1)

Country Link
JP (1) JPS5748936A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950766A (ja) * 1982-09-17 1984-03-23 Masayo Saitou 永久磁石自力回転原動機
JPS5953435A (ja) * 1982-09-22 1984-03-28 Kawasaki Kasei Chem Ltd １，４−ジヒドロアントラヒドロキノン又はアントラキノンの製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950766A (ja) * 1982-09-17 1984-03-23 Masayo Saitou 永久磁石自力回転原動機
JPS5953435A (ja) * 1982-09-22 1984-03-28 Kawasaki Kasei Chem Ltd １，４−ジヒドロアントラヒドロキノン又はアントラキノンの製造方法

Also Published As

Publication number Publication date
JPS6212778B2 (enrdf_load_stackoverflow) 1987-03-20

Similar Documents

Publication Publication Date Title
GB1229022A (en) Process and apparatus for the separation of two-or multicomponent mixtures by multi-stage fractional crystallization
US3370082A (en) Purification of adipodinitrile
JPS5748936A (en) Preparation of 1,4,4a,9a-tetrahydroanthraquinone
JPS5432431A (en) Replacement and separation of mother liquor in terephthalic acid suspension
JP2635351B2 (ja) 冷却結晶層の浄化法
US2098047A (en) Process of recovering maleic acid from the fume gases containing small amounts thereof
US4369169A (en) Pretreatment of crude wet process phosphoric acid
JPS5679652A (en) Novel phenylalanine salt crystal
US4557873A (en) Process for isolating paraffinsulfonates and sulfuric acid of low alkali metal sulfate content from parafinsulfoxidation reaction mixtures
NL193025A (enrdf_load_stackoverflow)
US3049566A (en) Vanillin purification
JPS5587744A (en) Recovery of terephthalic acid
US3607920A (en) Process for the preparation of high purity isomers of toluic acid
US1897110A (en) Process of purifying phthalic anhydride
JPS5781436A (en) Purification of ethyl acetate
JPH01152291A (ja) 高純度銅の製造方法
JPS5515785A (en) Preparation of hard butter
US3239556A (en) Purification of hydroxyethyl terephthalate
US4145353A (en) Process for removing 1,4-naphthoquinone from phthalic anhydride
US3379757A (en) Malic acid synthesis
SU376421A1 (ru) Способ очистки тартразина
US2118802A (en) Method of conserving pickling liquor
JPS5518520A (en) Regenerating method for organic solvent
JPS5365814A (en) Purification of acetic acid
CAILAUD et al. APPARATUS FOR THE PREVENTION OF SCALING IN DESALINATION APPARATUS