GB1110091A - Process for the rapid tanning of medium weight and heavy leather - Google Patents

Process for the rapid tanning of medium weight and heavy leather

Info

Publication number
GB1110091A
GB1110091A GB76/66A GB7666A GB1110091A GB 1110091 A GB1110091 A GB 1110091A GB 76/66 A GB76/66 A GB 76/66A GB 7666 A GB7666 A GB 7666A GB 1110091 A GB1110091 A GB 1110091A
Authority
GB
United Kingdom
Prior art keywords
tannin
leather
tanning
sulphonic acid
liquor
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
GB76/66A
Inventor
Wolfhard Luck
Bruno Zinc
Ernst Komarek
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB1110091A publication Critical patent/GB1110091A/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
    • C14C3/28—Multi-step processes
    • 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
    • C14C3/04—Mineral tanning
    • C14C3/06—Mineral tanning using chromium compounds
    • 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
    • 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
    • C14C3/12—Vegetable tanning using purified or modified vegetable tanning agents
    • 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
    • C14C3/18—Chemical tanning by organic agents using polycondensation products or precursors thereof
    • C14C3/20—Chemical tanning by organic agents using polycondensation products or precursors thereof sulfonated

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

A process for the rapid tanning of medium weight and heavy leather comprises pre-tanning with a chromium tannin, or a mixture of a chromium tannin and (a) a naphthalene sulphonic acid and/or (b) a condensation product of a naphthalene sulphonic acid and formaldehyde and/or (c) a synthetic tannin other than those mentioned in (a) and (b) and/or (d) sulphite waste liquor, in a liquor or without a liquor, treating the pre-tanned leather with a precursory agent comprising a condensation product of a naphthalene sulphonic acid and formaldehyde and/or sulphite waste liquor acid and optionally containing 5-20% by weight of a water soluble inorganic neutral salt, and finally tanning with a powdered synthetic and/or vegetable tannin without a liquor. The neutral salts specified include the chlorides and sulphates of sodium potassium and ammonium. The precursory agent has its acid number adjusted to at least 30 before or during its treatment of the pre-tanned leather, by means of formic, glutaric, adipic, oxalic or naphthalene sulphonic acid, sodium bisulphite or ammonia. In the Examples cow hides are treated in the lime house and pickled before being pretanned. The pre-tanning agents specified are a chromium complex tannin as in Example (1) of French Specification 1,329,231, a mixture of a condensation product of Example (1) of German Specification 1,053,517, sulphite waste liquor and chromic sulphate, chromic sulphate tannin, and a mixture of chromium sulphate and b -naphthalene sulphonic acid-formaldehyde condensation product. The final tanning agents specified are mimosa extract, chestnut extract, sulphited quebracho extract and synthetic exchange tannin. The tanning may be done in a drum. The process is suitable for the production of sole leather, sole leather splits, inside sole leather welting leather and upper leather.
GB76/66A 1965-01-02 1966-01-03 Process for the rapid tanning of medium weight and heavy leather Expired GB1110091A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF44869A DE1288233B (en) 1965-01-02 1965-01-02 Process for the rapid tanning of medium or heavy skins

Publications (1)

Publication Number Publication Date
GB1110091A true GB1110091A (en) 1968-04-18

Family

ID=7100240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB76/66A Expired GB1110091A (en) 1965-01-02 1966-01-03 Process for the rapid tanning of medium weight and heavy leather

Country Status (7)

Country Link
US (1) US3519378A (en)
BE (1) BE674586A (en)
CH (1) CH465125A (en)
DE (1) DE1288233B (en)
FR (1) FR1464309A (en)
GB (1) GB1110091A (en)
NL (1) NL6517270A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0533011A1 (en) * 1991-09-19 1993-03-24 Bayer Ag Process for producing chrome-tanned leather

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888625A (en) * 1973-01-29 1975-06-10 Chemtan Company Method of chrome-retanning leather
IT1121190B (en) * 1979-07-24 1986-03-26 Torrini Ottavio PROCESSING OF LEATHER WITH TRIVALENT GROMINE SALTS WITHIN ROTATING BARRELS WITHOUT RESIDUAL BATH FOR REASONS OF ECOLOGICAL ORDER
CA1146302A (en) * 1979-08-24 1983-05-17 William C. Beier Process for producing leather
US4314802A (en) * 1979-08-24 1982-02-09 Rohm And Haas Company Process for producing leather
BR9904027A (en) * 1999-09-30 2001-06-05 Seta S A Extrativa Tanino De A Permeable packaging for gradual supply of tanning material and leather tanning process

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1327105A (en) * 1915-04-23 1920-01-06 Landmark Hans Brun Process of the production of tanning extract from waste sulfite lye
US1430477A (en) * 1920-03-25 1922-09-26 Fulcra Tan Company Tanning preparation
GB739312A (en) * 1952-11-08 1955-10-26 Toten Cellulosefab As Process for reducing the salt content and adjusting ph in tanning solutions
DE941681C (en) * 1953-01-29 1956-04-19 Bayer Ag Tanning agents in solid or powder form
US2955904A (en) * 1956-09-11 1960-10-11 Schnoller Desiderio Rapid process for tanning hides
US2997364A (en) * 1956-12-11 1961-08-22 Bayer Ag Chrome-tanning mixtures and preparation of leather therewith
US3065039A (en) * 1957-02-02 1962-11-20 Bayer Ag Sulfo-methylated phenol-formaldehyde tanning agents
DE1137005B (en) * 1961-03-10 1962-09-27 Basf Ag Process for the preparation of condensation products from naphthalenesulfonic acids and aldehydes
DE1244332B (en) * 1961-07-19 1967-07-13 Bayer Ag Process for the rapid tanning of medium or heavy leathers
DE1273119B (en) * 1961-08-03 1968-07-18 Bayer Ag Process for the rapid tanning of medium or heavy skin
FR1329231A (en) * 1962-07-18 1963-06-07 Bayer Ag Process for the rapid tanning of medium and heavy leathers
FR1330451A (en) * 1962-08-02 1963-06-21 Bayer Ag Process for the rapid tanning of medium and heavy leathers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0533011A1 (en) * 1991-09-19 1993-03-24 Bayer Ag Process for producing chrome-tanned leather
US5340365A (en) * 1991-09-19 1994-08-23 Bayer Aktiengesellschaft Process for producing chrome leather

Also Published As

Publication number Publication date
US3519378A (en) 1970-07-07
CH465125A (en) 1968-11-15
FR1464309A (en) 1966-12-30
BE674586A (en) 1966-04-15
DE1288233B (en) 1969-01-30
NL6517270A (en) 1966-07-04

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