GB278651A - Improvements in the manufacture and production of vat dyestuffs - Google Patents

Improvements in the manufacture and production of vat dyestuffs

Info

Publication number
GB278651A
GB278651A GB7440/27A GB744027A GB278651A GB 278651 A GB278651 A GB 278651A GB 7440/27 A GB7440/27 A GB 7440/27A GB 744027 A GB744027 A GB 744027A GB 278651 A GB278651 A GB 278651A
Authority
GB
United Kingdom
Prior art keywords
reducing
manufacture
production
solution
vat dyestuffs
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
GB7440/27A
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
Publication of GB278651A publication Critical patent/GB278651A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/64—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by introduction of functional groups containing oxygen only in singly bound form
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
    • C07C45/70—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction with functional groups containing oxygen only in singly bound form
    • C07C45/71—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction with functional groups containing oxygen only in singly bound form being hydroxy groups

Landscapes

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

Abstract

278,651. I. G. Farbenindustrie Akt.- Ges. Oct. 8, 1926, [Convention date]. Dibenzanthrones dyes are obtained from the nitrobenzanthrone described in Example 2 of Specification 12518/06 by exchanging the nitro group for an alkyloxy group by the successive steps of reducing, diazotizing. boiling, and alkylating, and treating the products with alkaline condensing-agents. According to an example the aminobenzanthrone obtained by reducing the said nitro compound is diazotized with nitrosyl-sulphuric acid, and the solution diluted and boiled; the oxy compound is purified by solution in alkali and methylated by means of toluenesulphonic methyl ester in trichlorbenzene ; the methoxybenzanthrone is fused with alcoholic potash, the product being a green vat dyestuff having the same properties as that described in Example 2 of Specification 181,304 and Example 1 of Specification 218,255.
GB7440/27A 1926-10-08 1927-03-17 Improvements in the manufacture and production of vat dyestuffs Expired GB278651A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE278651X 1926-10-08

Publications (1)

Publication Number Publication Date
GB278651A true GB278651A (en) 1928-03-29

Family

ID=6028531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7440/27A Expired GB278651A (en) 1926-10-08 1927-03-17 Improvements in the manufacture and production of vat dyestuffs

Country Status (1)

Country Link
GB (1) GB278651A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259179A (en) * 1979-02-27 1981-03-31 The American Original Corporation Method and apparatus for separating solids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259179A (en) * 1979-02-27 1981-03-31 The American Original Corporation Method and apparatus for separating solids

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