GB339954A - Improvements in and relating to the production and use of vat dyestuffs - Google Patents

Improvements in and relating to the production and use of vat dyestuffs

Info

Publication number
GB339954A
GB339954A GB1797829A GB1797829A GB339954A GB 339954 A GB339954 A GB 339954A GB 1797829 A GB1797829 A GB 1797829A GB 1797829 A GB1797829 A GB 1797829A GB 339954 A GB339954 A GB 339954A
Authority
GB
United Kingdom
Prior art keywords
dyes
dibenzanthronyl
relating
production
derivatives
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
GB1797829A
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.)
ROBERT FRASER THOMSON
Scottish Dyes Ltd
Original Assignee
ROBERT FRASER THOMSON
Scottish Dyes 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 ROBERT FRASER THOMSON, Scottish Dyes Ltd filed Critical ROBERT FRASER THOMSON
Priority to GB1797829A priority Critical patent/GB339954A/en
Publication of GB339954A publication Critical patent/GB339954A/en
Expired legal-status Critical Current

Links

Landscapes

  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Abstract

339,954. Shaw, C., Thomson, R. F., Thomas, J., and Scottish Dyes, Ltd. June 11, 1929. Benzanthrone derivatives.-Vat dyes are made by treating Bz1 : Bz1<1>-dibenzanthronyl or its substitution products with a dichromate in sulphuric acid and subjecting the product to alkali fusion; in the presence or absence of an alcohol, phenol or other diluent. In examples, dyes are made from Bz1 : Bz1<1>-dibenzanthronyl itself and from its tetrabrom and tetrachlor derivatives (made by brominating or chlorinating in phthalic anhydride); the products dye in blue-grey to black shades. Specifications 251,313 and 278,112 are referred to.
GB1797829A 1929-06-11 1929-06-11 Improvements in and relating to the production and use of vat dyestuffs Expired GB339954A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1797829A GB339954A (en) 1929-06-11 1929-06-11 Improvements in and relating to the production and use of vat dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1797829A GB339954A (en) 1929-06-11 1929-06-11 Improvements in and relating to the production and use of vat dyestuffs

Publications (1)

Publication Number Publication Date
GB339954A true GB339954A (en) 1930-12-11

Family

ID=10104525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1797829A Expired GB339954A (en) 1929-06-11 1929-06-11 Improvements in and relating to the production and use of vat dyestuffs

Country Status (1)

Country Link
GB (1) GB339954A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468606A (en) * 1946-12-23 1949-04-26 American Cyanamid Co Process for making isodibenzanthrone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468606A (en) * 1946-12-23 1949-04-26 American Cyanamid Co Process for making isodibenzanthrone

Similar Documents

Publication Publication Date Title
GB339954A (en) Improvements in and relating to the production and use of vat dyestuffs
GB307328A (en) Manufacture and production of vat dyestuffs
GB299972A (en) The manufacture of vat dyestuffs of the anthracene series
GB260588A (en) Improvements in the manufacture and production of vat dyestuffs of the anthraquinone series
GB364141A (en) Improvements in and relating to the halogenation of anthraquinone and its derivatives
GB282481A (en) Improvements in the manufacture of vat dyes
GB350030A (en) Improvements in and relating to dyestuffs
GB468648A (en) Manufacture of vat-dyestuffs and intermediates
GB315506A (en) Improvements in the manufacture and production of vat dyestuffs
GB431654A (en) The manufacture of brominated vat dyestuffs
GB233452A (en) Improvements in the manufacture of vat dye-stuffs
GB298931A (en) Improvements in the manufacture of benzanthrone derivatives
GB279205A (en) Manufacture and use of vat dyes of the benzanthrone series
GB205304A (en) Improvements in the manufacture and production of vat dyestuffs
GB446971A (en) Manufacture of 2-aminoanthraquinone-sulphonic acids
GB302489A (en) Improvements in the manufacture and production of brown vat dyestuffs
GB421249A (en) Improvements in or relating to the manufacture of vat dyes of the dibenzanthrone series
GB284656A (en) Manufacture of dyestuffs and their application
GB276768A (en) Process for the manufacture of new vat dyes
GB294486A (en) Manufacture of dyestuffs
GB359937A (en) Manufacture of vat dyestuffs
GB276767A (en) New black and grey vat dyestuffs
GB298248A (en) Improvements in and relating to the production of an anthraquinone hydroazine dyestuff
GB439279A (en) Manufacture of vat-dyestuffs
GB279479A (en) Manufacture of vat-dyestuffs