GB590907A - Improved process of manufacturing tanning extract from concentrated sulphite cellulose waste liquor - Google Patents

Improved process of manufacturing tanning extract from concentrated sulphite cellulose waste liquor

Info

Publication number
GB590907A
GB590907A GB2070544A GB2070544A GB590907A GB 590907 A GB590907 A GB 590907A GB 2070544 A GB2070544 A GB 2070544A GB 2070544 A GB2070544 A GB 2070544A GB 590907 A GB590907 A GB 590907A
Authority
GB
United Kingdom
Prior art keywords
tanning
liquor
waste liquor
alcohol
cellulose waste
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
GB2070544A
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.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB590907A publication Critical patent/GB590907A/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
    • C14C3/24—Chemical tanning by organic agents using lignin derivatives, e.g. sulfate liquor

Landscapes

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

Abstract

590,907. Tanning-agents. SCHULLER, K. Oct. 25, 1944, No. 20705. [Class 76] A tanning extract with a low content of alkaline salts and of organic non-tanning substances is prepared from sulphite cellulose waste liquor by adding, preferably after concentration of the liquor, a water-miscible liquid organic substance which dissolves the ligno-sulphonic acid but precipitates alkaline salts, and removing the precipitate. Suitable organic liquids are methyl or ethyl alcohol, alcohol prepared from sulphite cellulose waste liquor, and acetone. Before adding the organic liquid the liquor may be made alkaline, e.g., with sodium or potassium carbonate, ammonia distilled off, and acid added to form alkaline salts. By adjusting the quantity of alcohol used (e.g., from “ to 3 parts per part of liquor) and the time allowed for precipitation (e.g., ¢ to 24 hours), tanning extracts of above 60, per cent purity may be obtained: After removal of the precipitate the alcohol is distilled off and recovered.
GB2070544A 1944-10-25 Improved process of manufacturing tanning extract from concentrated sulphite cellulose waste liquor Expired GB590907A (en)

Publications (1)

Publication Number Publication Date
GB590907A true GB590907A (en) 1947-07-31

Family

ID=1735642

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2070544A Expired GB590907A (en) 1944-10-25 Improved process of manufacturing tanning extract from concentrated sulphite cellulose waste liquor

Country Status (1)

Country Link
GB (1) GB590907A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952507A (en) * 1958-11-24 1960-09-13 Ontario Research Foundation Production of a tanning agent from waste sulphite liquor by solvent extraction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952507A (en) * 1958-11-24 1960-09-13 Ontario Research Foundation Production of a tanning agent from waste sulphite liquor by solvent extraction

Similar Documents

Publication Publication Date Title
GB590907A (en) Improved process of manufacturing tanning extract from concentrated sulphite cellulose waste liquor
GB928636A (en) Extraction of ribonucleic acid from yeast
GB855401A (en) Improvements in or relating to the bittering of beer
GB566351A (en) Improvements in or relating to processes for the extraction and purification of insulin
GB579459A (en) Process for the purification of 4-hydroxycoumarins
GB1261685A (en) Purification of crude 2-mercaptobenzothiazole
US2479832A (en) Penicillin preparation
Barkdoll et al. Some Experiments on the in vitro Formation of Thyroxine from Diiodotyrosine
GB618174A (en) Process for recovering proteolytic enzymes from the pancreas of mammals
GB1259140A (en)
GB702072A (en) Improvements in or relating to the production of hecogenin from plant material
ES234634A1 (en) A procedure to produce giutºmic acid (Machine-translation by Google Translate, not legally binding)
SU65492A1 (en) The method of refining sulfite cellulose extracts
FR740524A (en) Process for the purification of trinitrotoluene
GB820788A (en) Extracts of parts of plants of the genus aesculus
GB779318A (en) Process for separating the d-(-)-threo-1-(p-nitrophenyl)-2-amino 1,3-propanediol from the racemic compound
ES232359A1 (en) Procedure to recover crystalline and substantially pure novobiocine from a concentrated solution of novobiocinico-active material (Machine-translation by Google Translate, not legally binding)
GB632672A (en) Pure autolytic tuberculin and preparation thereof
GB191202161A (en) Process for Preparing a Refined Extract of Cascara Sagrada.
GB643331A (en) Manufacture of proteolysed liver preparations
GB1235534A (en) A-nor-estra-3(5),9-dien-2-ones, and processes for their preparation
GB445324A (en) The manufacture of ergometrinine, a new alkaloid of ergot
GB558083A (en) Improvements in chromate recovery
GB1130214A (en) Process for the manufacture of fatty acid condensation products easy to dilute with water
ES229215A1 (en) A procedure to obtain a substance that produces leukocytosis (the factor of leukocytosis) from aqueous liver extracts (Machine-translation by Google Translate, not legally binding)