GB157852A - Manufacture of tanning agents and process of tanning therewith - Google Patents
Manufacture of tanning agents and process of tanning therewithInfo
- Publication number
- GB157852A GB157852A GB1578/21A GB157821A GB157852A GB 157852 A GB157852 A GB 157852A GB 1578/21 A GB1578/21 A GB 1578/21A GB 157821 A GB157821 A GB 157821A GB 157852 A GB157852 A GB 157852A
- Authority
- GB
- United Kingdom
- Prior art keywords
- neutralized
- sulphuric acid
- tanning
- tar
- agents
- 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
- C14C3/08—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
Synthetic tanning-agents are prepared from tars or tar oils by coupling the components thereof by appropriate elements or radicals without isolation of the components from the tars or oils, and solubilizing the products by introducing acid groups before or after the coupling. According to examples:-a tar oil is heated with phosphorus peutoxide and concentrated sulphuric acid and the product neutralized or nearly neutralized with alkali; a tar oil is sulphonated by concentrated sulphuric acid and condensed with sulphur monochloride and the product nearly neutralized by caustic soda; a tar oil is sulphonated and condensed with formaldehyde and neutralized as described above; coal-tar is treated with concentrated sulphuric acid and the product nearly neutralized by caustic soda. Sulphuric acid may be replaced by chlorsulphonic acid &c. The products may be used in tanning, alone or mixed with other tanning-agents. Hides tanned with these materials may be dyed by treatment with diazo compounds.ALSO:Hides tanned with certain synthetic tanning agents may be dyed by treatment with diazo compounds. These tanning-agents are prepared from tars or tar oils by coupling the components thereof by appropriate elements or radicals without isolation of the components from the tars or oils, and solubilizing the products by introducing acid groups before or after the coupling. According to examples:-a tar oil is heated with phosphorus pentoxide and concentrated sulphuric acid and the product neutralized or nearly neutralized with alkali; a tar oil is sulphonated by concentrated sulphuric acid and condensed with sulphur monochloride and the product nearly neutralized by caustic soda; a tar oil is sulphonated and condensed with formaldehyde and neutralized as described above; coal-tar is treated with concentrated sulphuric acid and the product nearly neutralized by caustic soda. Sulphuric acid may be replaced by chlorsulphonic acid &c.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE157852X | 1916-05-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB157852A true GB157852A (en) | 1921-08-11 |
Family
ID=5679076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1578/21A Expired GB157852A (en) | 1916-05-31 | 1921-01-10 | Manufacture of tanning agents and process of tanning therewith |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB157852A (en) |
-
1921
- 1921-01-10 GB GB1578/21A patent/GB157852A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB157852A (en) | Manufacture of tanning agents and process of tanning therewith | |
GB157856A (en) | Manufacture of tanning stuffs and process of tanning therewith | |
US2121845A (en) | Process for producing clear lightcolored, water-soluble sulphonation products of mineral oil | |
GB306590A (en) | Process for the manufacture of ortho-aminoarylmercaptans | |
GB157855A (en) | Manufacture of tanning agents and process for tanning therewith | |
GB157851A (en) | Process for tanning hides | |
GB193029A (en) | Process for purifying mineral oils | |
GB184206A (en) | Improved process of manufacturing soluble phosphates | |
GB147534A (en) | Improved process for the manufacture of artificial tanning substances | |
GB327996A (en) | Process for the manufacture of organic stibinic acids and salts thereof | |
SU23540A1 (en) | Way to tanned leather | |
GB171956A (en) | Method for the production of a condensation product from naphthalene and glycollic acid | |
GB156254A (en) | Manufacture of new tanning materials and process of tanning therewith | |
GB200262A (en) | Improvements in the manufacture and application of vegetable, mineral and artificial tanning agents | |
GB172048A (en) | Improved manufacture of tanning agents | |
GB148126A (en) | Manufacture of tanning agents and the application thereof | |
GB318315A (en) | The manufacture of ortho-hydroxy-benzyl-amine arsinic acids and their aroyl-derivatives | |
GB756283A (en) | Improvements relating to processes for decomposing lignin | |
GB198645A (en) | Improvements in and relating to processes of manufacturing sulphate of chromium | |
GB109836A (en) | Process for Removing Naphthalene from Hydrocarbons. | |
GB222120A (en) | Manufacture of vat dyestuffs containing sulphur | |
GB397096A (en) | Process for the making of artificial resins | |
GB639775A (en) | Improved cyclic process for producing dicalcium phosphate by reacting raw phosphate with phosphoric acid | |
GB149979A (en) | Improvements relating to the production of resinous bodies from phenols and oxygen | |
GB307987A (en) | An improved rapid vegetable tanning process |