IE41066B1 - Tanning of hides - Google Patents

Tanning of hides

Info

Publication number
IE41066B1
IE41066B1 IE1107/75A IE110775A IE41066B1 IE 41066 B1 IE41066 B1 IE 41066B1 IE 1107/75 A IE1107/75 A IE 1107/75A IE 110775 A IE110775 A IE 110775A IE 41066 B1 IE41066 B1 IE 41066B1
Authority
IE
Ireland
Prior art keywords
tanning
hides
salts
iii
mole
Prior art date
Application number
IE1107/75A
Other versions
IE41066L (en
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
Priority claimed from DE2424301A external-priority patent/DE2424301C3/en
Application filed by Bayer Ag filed Critical Bayer Ag
Publication of IE41066L publication Critical patent/IE41066L/en
Publication of IE41066B1 publication Critical patent/IE41066B1/en

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
    • C14C3/04—Mineral tanning
    • C14C3/06—Mineral tanning using chromium compounds

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)
  • Materials For Medical Uses (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

Leather is chrome tanned by (a) pre-tanning the acidified hides with Cr-(III) salts and (b) completing the tanning with mixts. of Cr-(III) salts, acid binding agents and >=1.6 mole, pref. 2-3 mole, 4-6C aliphatic dicarboxylic acids and/or aromatic di- and/or tricarboxylic acids with 8-13C and/or salts per mole Cr2O3 in the Cr-(III) salts used for the final tanning. The components are added, pref. together, in powder form, ensuring that the total amt. of Cr2O3 present is 1.2-2%, esp. 1-5-1.8% on the wt. of the hides, and that the tanning is carried out with a bath wt. of =100% (w.r.t. the wt. of the hides) to a final pH value of >3.6, esp. 3.8-4.2. Process improves the usage of the Cr cpd., thus making the tanning more economical and facilitating treatment of effluent water from the process. [DE2424300A1]
IE1107/75A 1974-05-18 1975-05-16 Tanning of hides IE41066B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2424301A DE2424301C3 (en) 1974-05-18 1974-05-18 Process for chrome tanning and tanning mix therefor
DE2424300A DE2424300C3 (en) 1974-05-18 1974-05-18 Process for chrome tanning and tanning mix therefor

Publications (2)

Publication Number Publication Date
IE41066L IE41066L (en) 1975-11-18
IE41066B1 true IE41066B1 (en) 1979-10-10

Family

ID=25767148

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1107/75A IE41066B1 (en) 1974-05-18 1975-05-16 Tanning of hides

Country Status (6)

Country Link
DE (1) DE2424300C3 (en)
ES (1) ES437717A1 (en)
IE (1) IE41066B1 (en)
IT (1) IT1035757B (en)
NO (1) NO141690C (en)
YU (1) YU37361B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626429C3 (en) * 1976-06-12 1981-06-19 Bayer Ag, 5090 Leverkusen Process for chrome tanning of hides or retanning of leather in the presence of carboxylic acids as complexing agents
DE2822072A1 (en) * 1978-05-20 1979-11-29 Henkel Kgaa USE OF WATER-INSOLUBLE ALUMINUM SILICATES IN THE MANUFACTURING OF LEATHER
DE2739844B2 (en) * 1977-09-03 1980-02-28 Bayer Ag, 5090 Leverkusen Process for chrome tanning
DE3516842A1 (en) * 1985-05-10 1986-11-13 Hoechst Ag, 6230 Frankfurt METHOD FOR CHROME SAVING

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE643088C (en) * 1935-01-19 1937-03-24 I G Farbenindustrie Akt Ges Process for chrome tanning
DE733991C (en) * 1940-11-26 1943-04-06 Ig Farbenindustrie Ag Process for chrome tanning
DE1494825C3 (en) * 1966-10-27 1970-12-03 Basf Ag Process for the immediate tanning of limed bare
CH483493A (en) * 1967-01-04 1969-12-31 Basf Ag Process for tanning with self-blunting chrome tanning agents

Also Published As

Publication number Publication date
DE2424300B2 (en) 1977-11-17
IT1035757B (en) 1979-10-20
YU125275A (en) 1983-04-27
ES437717A1 (en) 1977-05-16
DE2424300A1 (en) 1975-12-04
NO751572L (en) 1975-11-19
DE2424300C3 (en) 1984-11-08
YU37361B (en) 1984-08-31
IE41066L (en) 1975-11-18
NO141690B (en) 1980-01-14
NO141690C (en) 1980-04-23

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