GB1377588A - Process for preparing dinitroanthraquinones - Google Patents

Process for preparing dinitroanthraquinones

Info

Publication number
GB1377588A
GB1377588A GB4634572A GB4634572A GB1377588A GB 1377588 A GB1377588 A GB 1377588A GB 4634572 A GB4634572 A GB 4634572A GB 4634572 A GB4634572 A GB 4634572A GB 1377588 A GB1377588 A GB 1377588A
Authority
GB
United Kingdom
Prior art keywords
anthraquinone
dinitroanthraquinones
nitric acid
mixture
less
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.)
Expired
Application number
GB4634572A
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of GB1377588A publication Critical patent/GB1377588A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16—Amino-anthraquinones
    • C09B1/20—Preparation from starting materials already containing the anthracene nucleus
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C46/00—Preparation of quinones

Landscapes

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

Abstract

1377588 Dinitroanthraquinones SUMITOMO CHEMICAL CO Ltd 6 Oct 1972 [7 Oct 1971] 46345/72 Divided out of 1377589 Heading C2C The invention comprises a process for the preparation of 1,5- and 1,8-dinitroanthraquinones by reacting anthraquinone with nitric acid and sulphuric acid at a temperature of 0‹ to 50‹ C., the nitric acid being used in an amount of 3-30 times that of the anthraquinone, by weight, sulphuric acid being used in an amount less than that of the nitric acid and more than 0À5 mole per mole of anthraquinone, and recovering a mixture of said dinitroanthraquinones. It is preferred to use sulphuric acid of concentration not less than 8% and nitric acid of concentration not less than 96%. Anthraquinone may be added to the mixture of acids or H 2 SO 4 may be added to the H 2 SO 4 /anthraquinone mixture.
GB4634572A 1971-10-07 1972-10-06 Process for preparing dinitroanthraquinones Expired GB1377588A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46079165A JPS511708B2 (en) 1971-10-07 1971-10-07

Publications (1)

Publication Number Publication Date
GB1377588A true GB1377588A (en) 1974-12-18

Family

ID=13682335

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4634572A Expired GB1377588A (en) 1971-10-07 1972-10-06 Process for preparing dinitroanthraquinones

Country Status (3)

Country Link
JP (1) JPS511708B2 (en)
CH (1) CH556889A (en)
GB (1) GB1377588A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5243695B2 (en) * 1972-11-16 1977-11-01

Also Published As

Publication number Publication date
JPS4840761A (en) 1973-06-15
JPS511708B2 (en) 1976-01-20
CH556889A (en) 1974-12-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee