GB212144A - Improvements in the manufacture and production of tanning materials - Google Patents

Improvements in the manufacture and production of tanning materials

Info

Publication number
GB212144A
GB212144A GB1058323A GB1058323A GB212144A GB 212144 A GB212144 A GB 212144A GB 1058323 A GB1058323 A GB 1058323A GB 1058323 A GB1058323 A GB 1058323A GB 212144 A GB212144 A GB 212144A
Authority
GB
United Kingdom
Prior art keywords
substances
reaction
product
soluble
ferrous sulphate
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
GB1058323A
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 GB1058323A priority Critical patent/GB212144A/en
Publication of GB212144A publication Critical patent/GB212144A/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

Humous substances of an acid character stated to be of use in tanning are obtained by the action of nitrogen oxides on solid coaly substances, preferably in presence of water or steam; the reaction may be effected in presence of a catalyst, such as ferrous sulphate. In an example, finely powdered moist brown coal made into a paste with a solution of ferrous sulphate is heated under reflux first to 70 DEG C. and then to 90 DEG C. and treated, while stirring, with a mixture of nitric oxide and air. The reaction is allowed to proceed until a test portion of the product is soluble or nearly soluble in alkali, and the product is then filtered and washed.
GB1058323A 1923-04-18 1923-04-18 Improvements in the manufacture and production of tanning materials Expired GB212144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1058323A GB212144A (en) 1923-04-18 1923-04-18 Improvements in the manufacture and production of tanning materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1058323A GB212144A (en) 1923-04-18 1923-04-18 Improvements in the manufacture and production of tanning materials

Publications (1)

Publication Number Publication Date
GB212144A true GB212144A (en) 1924-03-06

Family

ID=9970493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1058323A Expired GB212144A (en) 1923-04-18 1923-04-18 Improvements in the manufacture and production of tanning materials

Country Status (1)

Country Link
GB (1) GB212144A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4978559A (en) * 1989-11-03 1990-12-18 General Electric Company Autocatalytic electroless gold plating composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4978559A (en) * 1989-11-03 1990-12-18 General Electric Company Autocatalytic electroless gold plating composition

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