GB1020791A - Tanning process - Google Patents
Tanning processInfo
- Publication number
- GB1020791A GB1020791A GB103964A GB103964A GB1020791A GB 1020791 A GB1020791 A GB 1020791A GB 103964 A GB103964 A GB 103964A GB 103964 A GB103964 A GB 103964A GB 1020791 A GB1020791 A GB 1020791A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chromium
- salt
- dolomite
- acid
- sodium
- 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
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)
Abstract
In making leather which is resistant to boiling water, animal hides or pelts, e.g. calf pelts, are tanned with an aqueous liquor containing a tanning composition comprising one or more than one chromium salt and acid-binding dolomite, namely the double salt CaCO3, MgCO3 containing between 20% and 40%, by weight, of CaO and between 10% and 25% of MgO. Preferably, between 6 and 130 parts, by weight, of dolomite are used with each 100 parts of Cr2O3 present in the chromium salt or salts. The composition may also comprise one or more than one additional acid-binding substance, e.g. selected from sodium carbonate, sodium bicarbonate, calcium carbonate and sodium sulphite, the dolomite then constituting at least 10% of the total weight of acid-binding substance. Specific chromium salts exemplified include a chromium-aluminium-sodium sulphate complex salt and a chromium-sodium sulphate-acetic acid complex salt, prepared as described in Specification 969,865.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF38792A DE1225809B (en) | 1963-01-18 | 1963-01-18 | Tanning process |
| DEF0041363 | 1963-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1020791A true GB1020791A (en) | 1966-02-23 |
Family
ID=25975608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB103964A Expired GB1020791A (en) | 1963-01-18 | 1964-01-09 | Tanning process |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT248015B (en) |
| BE (1) | BE642518A (en) |
| CH (1) | CH430937A (en) |
| DE (1) | DE1444994A1 (en) |
| DK (1) | DK118201B (en) |
| GB (1) | GB1020791A (en) |
| NL (1) | NL6400244A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2739844C3 (en) * | 1977-09-03 | 1987-07-09 | Bayer Ag, 5090 Leverkusen | Chrome tanning process |
-
1963
- 1963-11-26 DE DE19631444994 patent/DE1444994A1/en active Pending
- 1963-12-23 CH CH1587563A patent/CH430937A/en unknown
-
1964
- 1964-01-07 AT AT6764A patent/AT248015B/en active
- 1964-01-09 GB GB103964A patent/GB1020791A/en not_active Expired
- 1964-01-15 BE BE642518A patent/BE642518A/xx unknown
- 1964-01-15 NL NL6400244A patent/NL6400244A/xx unknown
- 1964-01-17 DK DK25064A patent/DK118201B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE642518A (en) | 1964-05-04 |
| DE1444994A1 (en) | 1969-01-02 |
| NL6400244A (en) | 1964-07-20 |
| AT248015B (en) | 1966-07-11 |
| CH430937A (en) | 1967-02-28 |
| DK118201B (en) | 1970-07-20 |
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