GB414799A - An improved process for the manufacture of tanning extracts soluble when cold - Google Patents

An improved process for the manufacture of tanning extracts soluble when cold

Info

Publication number
GB414799A
GB414799A GB599033A GB599033A GB414799A GB 414799 A GB414799 A GB 414799A GB 599033 A GB599033 A GB 599033A GB 599033 A GB599033 A GB 599033A GB 414799 A GB414799 A GB 414799A
Authority
GB
United Kingdom
Prior art keywords
tanning
extracts
acid
small quantities
cold
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
GB599033A
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.)
Stockhausen GmbH and Co KG
Original Assignee
Chemische Fabrik Stockhausen GmbH
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 Chemische Fabrik Stockhausen GmbH filed Critical Chemische Fabrik Stockhausen GmbH
Priority to GB599033A priority Critical patent/GB414799A/en
Publication of GB414799A publication Critical patent/GB414799A/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
    • C14C3/10—Vegetable tanning

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

414,799. Making tanning -extracts. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Chemische Fabrik Stockhausen et Cie; Krefeld, Germany.) Feb. 28, 1933, No. 5990. [Class 76.] Tanning - extracts are prepared by treating crude aqueous extracts with small quantities, e.g. 0À5 to 1À5 per cent of the dry material, of alkali carbonate or other alkali while heating at ordinary pressure and then treating with small quantities of acids or acid salts under pressure whereby the insoluble "phlobaphenes" are converted into soluble tanning agents. Sulphurous acid, sodium bisulphite or bisulphate and acetic acid are mentioned as suitable acid substances. Caramel may be added to the extract to produce a yellow instead of reddish brown colour.
GB599033A 1933-02-28 1933-02-28 An improved process for the manufacture of tanning extracts soluble when cold Expired GB414799A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB599033A GB414799A (en) 1933-02-28 1933-02-28 An improved process for the manufacture of tanning extracts soluble when cold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB599033A GB414799A (en) 1933-02-28 1933-02-28 An improved process for the manufacture of tanning extracts soluble when cold

Publications (1)

Publication Number Publication Date
GB414799A true GB414799A (en) 1934-08-16

Family

ID=9806389

Family Applications (1)

Application Number Title Priority Date Filing Date
GB599033A Expired GB414799A (en) 1933-02-28 1933-02-28 An improved process for the manufacture of tanning extracts soluble when cold

Country Status (1)

Country Link
GB (1) GB414799A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676980A (en) * 1950-01-31 1954-04-27 Tanexco Inc Process of making tanninlike materials and the resulting products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676980A (en) * 1950-01-31 1954-04-27 Tanexco Inc Process of making tanninlike materials and the resulting products

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