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GB146427A - Improvements in the manufacture and production of tanning preparations - Google Patents

Improvements in the manufacture and production of tanning preparations

Info

Publication number
GB146427A
GB146427A GB1846720A GB1846720A GB146427A GB 146427 A GB146427 A GB 146427A GB 1846720 A GB1846720 A GB 1846720A GB 1846720 A GB1846720 A GB 1846720A GB 146427 A GB146427 A GB 146427A
Authority
GB
United Kingdom
Prior art keywords
manufacture
production
decolourizing
agents
anthracene
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
GB1846720A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik 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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Priority to GB1846720A priority Critical patent/GB146427A/en
Publication of GB146427A publication Critical patent/GB146427A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/08—Chemical tanning by organic agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

Tanning-agents are prepared by sulphonating crude anthracene, crude carbazole, anthracene waste, or the like, by means of chlorsulphonic acid, preferably in the presence of an inert diluent, such as nitrobenzene, at a moderate temperature; the products may be subsequently treated with decolourizing agents as described in Specification 169,943. The Specification as open to inspection under Sect. 91 (3) (a) describes also the sulphonation of the above materials with sulphuric acid, and decolourizing the product by means of chlorine, hypochlorites, oxalic acid, formaldehyde, &c. This subject-matter does not appear in the Specification as accepted.
GB1846720A 1920-07-03 1920-07-03 Improvements in the manufacture and production of tanning preparations Expired GB146427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1846720A GB146427A (en) 1920-07-03 1920-07-03 Improvements in the manufacture and production of tanning preparations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1846720A GB146427A (en) 1920-07-03 1920-07-03 Improvements in the manufacture and production of tanning preparations

Publications (1)

Publication Number Publication Date
GB146427A true GB146427A (en) 1921-10-03

Family

ID=10112916

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1846720A Expired GB146427A (en) 1920-07-03 1920-07-03 Improvements in the manufacture and production of tanning preparations

Country Status (1)

Country Link
GB (1) GB146427A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448370A (en) * 1944-11-18 1948-08-31 Socony Vacuum Oil Co Inc Sulfonation of aromatic compounds in presence of acetonitrile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448370A (en) * 1944-11-18 1948-08-31 Socony Vacuum Oil Co Inc Sulfonation of aromatic compounds in presence of acetonitrile

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