GB171693A - Improved process of tanning and manufacture of agents therefor - Google Patents

Improved process of tanning and manufacture of agents therefor

Info

Publication number
GB171693A
GB171693A GB30484/21A GB3048421A GB171693A GB 171693 A GB171693 A GB 171693A GB 30484/21 A GB30484/21 A GB 30484/21A GB 3048421 A GB3048421 A GB 3048421A GB 171693 A GB171693 A GB 171693A
Authority
GB
United Kingdom
Prior art keywords
acid
dissolved
tanning
water
caustic
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
GB30484/21A
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.)
Gerb & Farbstoffwerke H Renner
Original Assignee
Gerb & Farbstoffwerke H Renner
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 Gerb & Farbstoffwerke H Renner filed Critical Gerb & Farbstoffwerke H Renner
Publication of GB171693A publication Critical patent/GB171693A/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

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

171,693. Gerb-und Farbstoffwerke A. Renner & Co., Akt.-Ges. Nov. 15, 1920, [Convention date]. Mineral tanning; combination tanning processes.-Hides are tanned with an arsenic compound which if insoluble in water has been rendered soluble or colloidal. Soluble compounds of arsenious acid, arsenic acid, sulpharsenious acid, sulpharsenic acid, phenylarsenic acid, diphenylarsenic acid or arsenophenol may be used directly as tanning-agents, but insoluble, compounds are mixed with an alkali salt of the corresponding acid, a sulphonic acid of a hydrocarbon, or a tanning-agent prepared by the condensation and sulphonation of a phenol and a hydrocarbon. Specification 169,758 is referred to. The following examples of the preparation of tanning-agents are given : (1) Ansenious acid is dissolved in caustic-soda solution; (2) the solution prepared in example (1) is mixed with chrome alum and any precipitate is filtered off; (3) a mixture of arsenious acid and an artificial tanning-agent prepared by sulphonating and condensing phenol and formaldehyde is dissolved in caustic-soda solution; (4) a mixture of phenylarsenic acid and arsenious acid is dissolved in caustic-soda solution, the resultant liquid being stirred and filtered; (5) a mixture of potassium sulpharsenite and aluminium sulphate is dissolved in water and the solution filtered; (6) a mixture of naphthalene sulphonic acids and arsenious acid is dissolved in caustic soda; (7) arsenic acid is dissolved in caustic-soda solution; (8) potassium sulpharsenite is dissolved in water; (9) an artificial tanning- agent prepared from phenol, formaldehyde and sulphuric acid is dissolved in water and arsenic acid added in the cold, any undissolved residue being dissolved by the addition of soda lye; (10) a mixture of phenylarsenic acid and #-naphthalene sulphonic acid is dissolved in water and the solution neutralized with sodium carbonate; (11) arsenophenol is sulphonated. dissolved in water and the excess acid neutralized; (12) diphenylarsenic acid and #-naphthalene sulphonic acid are heated together and the free sulphonic acid neutralized with sodium carbonate.
GB30484/21A 1920-11-15 1921-11-15 Improved process of tanning and manufacture of agents therefor Expired GB171693A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE171693X 1920-11-15

Publications (1)

Publication Number Publication Date
GB171693A true GB171693A (en) 1923-01-04

Family

ID=5689543

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30484/21A Expired GB171693A (en) 1920-11-15 1921-11-15 Improved process of tanning and manufacture of agents therefor

Country Status (1)

Country Link
GB (1) GB171693A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFO20100002A1 (en) * 2010-06-10 2011-12-11 Stamperia Bertozzi Srl LEATHER ELEMENT DECORATED WITH AT LEAST ONE GRAPHIC REPRESENTATION AND ITS RELATION PROCEDURE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFO20100002A1 (en) * 2010-06-10 2011-12-11 Stamperia Bertozzi Srl LEATHER ELEMENT DECORATED WITH AT LEAST ONE GRAPHIC REPRESENTATION AND ITS RELATION PROCEDURE

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