GB652899A - Improvements in or relating to a process for stripping colour from dyed wool - Google Patents
Improvements in or relating to a process for stripping colour from dyed woolInfo
- Publication number
- GB652899A GB652899A GB15973/48A GB1597348A GB652899A GB 652899 A GB652899 A GB 652899A GB 15973/48 A GB15973/48 A GB 15973/48A GB 1597348 A GB1597348 A GB 1597348A GB 652899 A GB652899 A GB 652899A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stripping
- cell
- colour
- vessel
- relating
- 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
Abstract
<PICT:0652899/IV (c)/1> Colour is stripped from wool or other animal fibres by treating them with a solution containing vanadium, titanium or chromium ions in a low valency state derived from the region of the cathode of an electrolytic cell, and reducing the valency state of the higher valency ions formed during the stripping by electrolytic reduction of the solution, the liquids in the anode and cathode regions of the cell being separated by a porous diaphragm. The stripping is preferably carried out at a temperature above 75 DEG C. and in the presence of a wetting agent. Suitable apparatus comprises a vessel 4, an electrolytic cell 2 having a porous partition 8 and electrodes 10 and 12 of inert material such as tin, lead, platinum, graphite or an iron-silicon alloy, a reservoir 40 and a pump 18. Stripping may take place in the cell 2 or in vessel 4.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US652899XA | 1947-06-14 | 1947-06-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB652899A true GB652899A (en) | 1951-05-02 |
Family
ID=22061664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15973/48A Expired GB652899A (en) | 1947-06-14 | 1948-06-14 | Improvements in or relating to a process for stripping colour from dyed wool |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB652899A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4702807A (en) * | 1986-10-02 | 1987-10-27 | International Paper Company | Electrochemical process for bleaching wood pulp using chlorate and a redox catalyst |
-
1948
- 1948-06-14 GB GB15973/48A patent/GB652899A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4702807A (en) * | 1986-10-02 | 1987-10-27 | International Paper Company | Electrochemical process for bleaching wood pulp using chlorate and a redox catalyst |
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