GB2039897A - Process for purifying naphthoqinone - Google Patents

Process for purifying naphthoqinone

Info

Publication number
GB2039897A
GB2039897A GB7942637A GB7942637A GB2039897A GB 2039897 A GB2039897 A GB 2039897A GB 7942637 A GB7942637 A GB 7942637A GB 7942637 A GB7942637 A GB 7942637A GB 2039897 A GB2039897 A GB 2039897A
Authority
GB
United Kingdom
Prior art keywords
naphthoquinone
purifying
naphthoqinone
solution
temperature
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
GB7942637A
Other versions
GB2039897B (en
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
Publication of GB2039897A publication Critical patent/GB2039897A/en
Application granted granted Critical
Publication of GB2039897B publication Critical patent/GB2039897B/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C46/00—Preparation of quinones
    • C07C46/10—Separation; Purification; Stabilisation; Use of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

In a process for purifying naphthoquinone obtained by gas phase catalytic oxidation of naphthalene, the improvement which comprises contacting a solution of the naphthoquinone dissolved in a solvent capable of dissolving naphthoquinone and not miscible with water, with an aqueous sodium bicarbonate solution capable of maintaining pH not lower than 7 between ordinary temperature and a temperature of 90`C to thereby extract into the aqueous solution impurities contained in the naphthoquinone.
GB7942637A 1978-08-11 1979-08-09 Process for purifying naphthoqinone Expired GB2039897B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53097412A JPS5811936B2 (en) 1978-08-11 1978-08-11 Purification method of naphthoquinone

Publications (2)

Publication Number Publication Date
GB2039897A true GB2039897A (en) 1980-08-20
GB2039897B GB2039897B (en) 1983-01-12

Family

ID=14191759

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7942637A Expired GB2039897B (en) 1978-08-11 1979-08-09 Process for purifying naphthoqinone

Country Status (4)

Country Link
JP (1) JPS5811936B2 (en)
DE (1) DE2952902C2 (en)
GB (1) GB2039897B (en)
WO (1) WO1980000340A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6289640A (en) * 1986-04-02 1987-04-24 Kawasaki Kasei Chem Ltd Purification of 1,4-naphthoquinone

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2536833A (en) * 1948-09-18 1951-01-02 Allied Chem & Dye Corp Recovery of naphthoquinone
JPS518256A (en) * 1974-07-09 1976-01-23 Kawasaki Kasei Chemicals TETORAHIDOROANTORA KINONNO SEIZOHOHO
DE2800864A1 (en) * 1978-01-10 1979-07-12 Kawasaki Kasei Chemicals Sepg. naphthoquinone and phthalic acid - from naphthalene oxidn. mixt., by neutralising acid impurity, solvent extn. and crystallisation

Also Published As

Publication number Publication date
DE2952902T1 (en) 1980-12-11
JPS5524143A (en) 1980-02-21
WO1980000340A1 (en) 1980-03-06
JPS5811936B2 (en) 1983-03-05
DE2952902C2 (en) 1987-08-27
GB2039897B (en) 1983-01-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920809