GB684573A - Improvements relating to the manufacture of cellulose xanthate - Google Patents
Improvements relating to the manufacture of cellulose xanthateInfo
- Publication number
- GB684573A GB684573A GB26152/50A GB2615250A GB684573A GB 684573 A GB684573 A GB 684573A GB 26152/50 A GB26152/50 A GB 26152/50A GB 2615250 A GB2615250 A GB 2615250A GB 684573 A GB684573 A GB 684573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- per cent
- manufacture
- caustic soda
- cellulose xanthate
- 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
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
- D01F2/08—Composition of the spinning solution or the bath
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Cellulose xanthate to be employed for the manufacture of viscose is prepared by treating cellulose with caustic soda solution of at least 25 per cent strength at a temperature above 50 DEG C. pressing and grinding the soda cellulose (soda cellulose II) so-obtained and sulphidizing with 100-200 per cent by weight, calculated on the cellulose, of carbon bisulphide in the liquid or vapour state at 40-80 DEG C. The solubility of the cellulose xanthate may be increased if the alkali cellulose is treated, prior to sulphidization, with a dilute, e.g. 12-25 per cent, caustic soda solution. In examples, caustic soda solutions of 35 and 36 per cent strength are employed at 80 DEG C., and sulphidization is effected with 150 and 200 per cent (calculated on the cellulose) carbon bisulphide at 60 DEG and 65 DEG C. respectively.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE684573X | 1949-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB684573A true GB684573A (en) | 1952-12-17 |
Family
ID=6597636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26152/50A Expired GB684573A (en) | 1949-10-31 | 1950-10-26 | Improvements relating to the manufacture of cellulose xanthate |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1028782A (en) |
| GB (1) | GB684573A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6594636B1 (en) * | 1998-07-23 | 2003-07-15 | Hitachi, Ltd. | Method for managing workflow based on electronic mail system |
-
1950
- 1950-07-31 FR FR1028782D patent/FR1028782A/en not_active Expired
- 1950-10-26 GB GB26152/50A patent/GB684573A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6594636B1 (en) * | 1998-07-23 | 2003-07-15 | Hitachi, Ltd. | Method for managing workflow based on electronic mail system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1028782A (en) | 1953-05-27 |
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