GB148750A - Improved manufacture of artificial tanning agents - Google Patents
Improved manufacture of artificial tanning agentsInfo
- Publication number
- GB148750A GB148750A GB1746120A GB1746120A GB148750A GB 148750 A GB148750 A GB 148750A GB 1746120 A GB1746120 A GB 1746120A GB 1746120 A GB1746120 A GB 1746120A GB 148750 A GB148750 A GB 148750A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphonated
- formaldehyde
- sulphuric acid
- condensed
- coumarone
- 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 coumarone resin by the following processes:-(1) a mixture of coumarone resin with a mono- or poly-hydric phenol is sulphonated, with or without the addition of formaldehyde, or the sulphonated coumarone resins described in Specification 172,048, are condensed with a mono-or poly-hydric phenol, with or without the addition of formaldehyde; (2) a sulphonated coumarone resin is condensed with the resins obtained by alkaline condensation of phenols with formaldehyde, or a non-sulphonated coumarone resin is condensed with the sulphonated phenolformaldehyde resins described in Specification 171,729; (3) the coumarone resins or their sulphonic acids are condensed by means of sulphuric acid, with or without formaldehyde, with aromatic or other cyclic hydrocarbons, or their sulphonic acids, or with the acid resins from mineral or tar oil purification, or with the products described in Specification 146,166; (4) coumarone resins which contain also indene are condensed and sulphonated by means of sulphuric acid, with the aid of formaldehyde; (5) the sulphonated or non-sulphonated product of (4) is further condensed and sulphonated together with phenols, with or without formaldehyde; (6) the products of the foregoing processes are converted into quinone-like compounds by oxidation, e.g. by means of ozone, hydrogen peroxide, potassium bichromate or permanganate, or persulphates. According to examples:-a mixture of coumarone resin and phenol is heated with formaldehyde by fuming sulphuric acid; a mixture of coumarone resin and the condensation product from a - or b -naphthol and formaldehyde (example 3 of Specification 171,729) is heated with fuming sulphuric acid; the sulphonated coumarone resin described in example 1 of Specification 172,048 is heated with the product from anthracene oil described in example 2 of Specification 146,166, formaldehyde, and fuming sulphuric acid; coumarone resin containing much indene is heated with formaldehyde and fuming sulphuric acid, the product is further condensed with cresol, and p again sulphonated; the product of the first example is treated with potassium bichromate. Excess sulphuric acid is removed from the products by means of alkali or barium or calcium hydroxide or carbonate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE515717X | 1919-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB148750A true GB148750A (en) | 1921-12-28 |
Family
ID=6549063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1746120A Expired GB148750A (en) | 1919-07-31 | 1920-06-26 | Improved manufacture of artificial tanning agents |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR515717A (en) |
| GB (1) | GB148750A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2540641A (en) * | 1946-07-09 | 1951-02-06 | Allied Chem & Dye Corp | Process of producing indene modified phenol formaldehyde resins |
-
1920
- 1920-05-18 FR FR515717A patent/FR515717A/en not_active Expired
- 1920-06-26 GB GB1746120A patent/GB148750A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2540641A (en) * | 1946-07-09 | 1951-02-06 | Allied Chem & Dye Corp | Process of producing indene modified phenol formaldehyde resins |
Also Published As
| Publication number | Publication date |
|---|---|
| FR515717A (en) | 1921-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB148750A (en) | Improved manufacture of artificial tanning agents | |
| GB1108584A (en) | Process for the purification of phenols | |
| GB903976A (en) | Production of dinonylnaphthalene sulfonates | |
| GB194815A (en) | Improved process of tanning and manufacture of agents therefor | |
| US1227894A (en) | Cyclic process of making aromatic hydrocarbon hydroxy compounds. | |
| US1211923A (en) | Method of separating a sulfonic acid of a hydrocarbon of the aromatic series from sulfuric acid and of converting the sulfonic acid into a salt. | |
| US2872437A (en) | Production of oil-soluble sulfonates | |
| GB157856A (en) | Manufacture of tanning stuffs and process of tanning therewith | |
| GB447417A (en) | Improvements in or relating to the manufacture of water-soluble condensation products derived from phenolic resins | |
| GB463624A (en) | Improvements in the manufacture and production of washing, cleansing, dispersing, solvent and like agents | |
| GB156254A (en) | Manufacture of new tanning materials and process of tanning therewith | |
| US1230829A (en) | Artificial resin and process of making the same. | |
| GB146167A (en) | Improved manufacture of tanning agents | |
| GB384619A (en) | Manufacture of aromatic oxy-carboxylic acids | |
| US1418718A (en) | Process of making a phenolic condensation product | |
| SU62995A1 (en) | The method of obtaining synthetic tanning agents | |
| GB120405A (en) | Improvements in the Separation and Purification of Sulphonic Acids. | |
| SU400573A1 (en) | Method of producing alkaline salts of arylalkylperoxyhydric acid | |
| GB156670A (en) | Process for tanning hides | |
| GB148268A (en) | Improved process for the manufacture of artificial tanning substances | |
| GB129002A (en) | Improvements relating to the Alkali-fusion of Aromatic Sulphonic Acids. | |
| GB227666A (en) | Improved manufacture of barium hydroxide or strontium hydroxide | |
| GB250398A (en) | Manufacture of tanning substances | |
| GB157852A (en) | Manufacture of tanning agents and process of tanning therewith | |
| GB246817A (en) | Improvements in the manufacture and production of alkylated aromatic sulphonic acids |