GB441919A - Improvements in the manufacture and production of nitrodibenzanthrones - Google Patents

Improvements in the manufacture and production of nitrodibenzanthrones

Info

Publication number
GB441919A
GB441919A GB1748135A GB1748135A GB441919A GB 441919 A GB441919 A GB 441919A GB 1748135 A GB1748135 A GB 1748135A GB 1748135 A GB1748135 A GB 1748135A GB 441919 A GB441919 A GB 441919A
Authority
GB
United Kingdom
Prior art keywords
nitric acid
aqueous
per cent
acid
nitric
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
GB1748135A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB1748135A priority Critical patent/GB441919A/en
Publication of GB441919A publication Critical patent/GB441919A/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
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/22—Dibenzanthrones; Isodibenzanthrones
    • C09B3/30—Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus

Landscapes

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

Abstract

Dinitrodibenzanthrones are obtained by treating dibenzanthrone or its substitution products with aqueous nitric acid containing other water-soluble acids which are not attacked by nitric acid, the concentration of the nitric acid being from about 10 per cent to almost 75 per cent, while there must be 25 per cent of water in the solutions. Conditions of temperature and concentration within the said range are chosen to produce the dinitro product. According to examples, dibenzanthrone is treated with (1) nitric acid containing aqueous sulphuric acid in various proportions; (2) nitric acid and aqueous phosphoric acid; (3) aqueous nitric and sulphuric acids with the addition of glacial acetic acid.
GB1748135A 1934-07-30 1934-07-30 Improvements in the manufacture and production of nitrodibenzanthrones Expired GB441919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1748135A GB441919A (en) 1934-07-30 1934-07-30 Improvements in the manufacture and production of nitrodibenzanthrones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1748135A GB441919A (en) 1934-07-30 1934-07-30 Improvements in the manufacture and production of nitrodibenzanthrones

Publications (1)

Publication Number Publication Date
GB441919A true GB441919A (en) 1936-01-29

Family

ID=10095912

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1748135A Expired GB441919A (en) 1934-07-30 1934-07-30 Improvements in the manufacture and production of nitrodibenzanthrones

Country Status (1)

Country Link
GB (1) GB441919A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127421A (en) * 1959-12-01 1964-03-31 Gen Aniline & Film Corp Mixed acid nitration of dispersions of crude dibenzanthrone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127421A (en) * 1959-12-01 1964-03-31 Gen Aniline & Film Corp Mixed acid nitration of dispersions of crude dibenzanthrone

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