GB573865A - Improvements in or relating to a process for removing the air contained in casein solutions of high viscosity - Google Patents
Improvements in or relating to a process for removing the air contained in casein solutions of high viscosityInfo
- Publication number
- GB573865A GB573865A GB21410/43A GB2141043A GB573865A GB 573865 A GB573865 A GB 573865A GB 21410/43 A GB21410/43 A GB 21410/43A GB 2141043 A GB2141043 A GB 2141043A GB 573865 A GB573865 A GB 573865A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- foam
- air
- pressure
- vessel
- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F4/00—Monocomponent artificial filaments or the like of proteins; Manufacture thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
Air is removed from a highly viscous sodium caseinate solution, containing about 25 per cent of casein, which is to be used in a dry spinning process for the production of artificial threads, by raising the temperature of the solution to about 50 DEG C. in a closed vessel having a volume several times that of the solution, reducing the pressure until the solution begins to boil and foam, and continuing the reduction of pressure until the air is substantially completely removed, this stage being indicated by the disappearance of the foam when the pressure is slightly increased. In view of the large capacity of the vessel, the foam which is produced during the earlier part of the treatment is unable to foul the outlet for the air. When the boiling begins, the air bubbles act as a nucleus for vapour formation and the larger bubbles which are formed burst sooner when they reach the surface. After some time, the foam starts to break down and the vacuum may be increased. In an example, sodium caseinate is dissolved in dilute caustic soda and the solution is placed in a vessel having a capacity of about 6 times that of the solution. The solution is heated to 50 DEG C. and the pressure is reduced to 16 centimetres of mercury. As the foam subsides, the vacuum is increased until the solution is completely freed of air.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE238120X | 1943-04-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB573865A true GB573865A (en) | 1945-12-10 |
Family
ID=5903430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21410/43A Expired GB573865A (en) | 1943-04-10 | 1943-12-21 | Improvements in or relating to a process for removing the air contained in casein solutions of high viscosity |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH238120A (en) |
| FR (1) | FR899154A (en) |
| GB (1) | GB573865A (en) |
-
1943
- 1943-10-07 CH CH238120D patent/CH238120A/en unknown
- 1943-10-26 FR FR899154D patent/FR899154A/en not_active Expired
- 1943-12-21 GB GB21410/43A patent/GB573865A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH238120A (en) | 1945-06-30 |
| FR899154A (en) | 1945-05-23 |
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