GB468993A - Preparation of cellulose xanthate solutions - Google Patents
Preparation of cellulose xanthate solutionsInfo
- Publication number
- GB468993A GB468993A GB20550/36A GB2055036A GB468993A GB 468993 A GB468993 A GB 468993A GB 20550/36 A GB20550/36 A GB 20550/36A GB 2055036 A GB2055036 A GB 2055036A GB 468993 A GB468993 A GB 468993A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- caustic soda
- solution
- per cent
- viscosity
- 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 solution is made by a single stage process in which cellulose of solution viscosity less than 1 C.G.S. unit, water, caustic soda, and carbon disulphide are interacted at a temperature of 15--20 DEG C. in such proportions as to yield a viscose containing from 6--10 per cent each of cellulose and caustic soda. The fibre and the caustic soda solution may be mixed before the addition of the carbon disulphide. The cellulose of low solution viscosity may be obtained by pretreating wood with hot dilute mineral acid solution prior to extraction by means of alkaline liquor, or by after-treating wood pulp by means of a mercerizing liquor containing an oxidant, followed by a bleaching treatment. Preferably the low viscosity cellulose has an alpha cellulose content of at least 93 per cent. The xanthation may be carried out with such an amount of caustic soda solution as to yield a mixture containing about 9 per cent of caustic soda based on all the ingredients. The xanthate obtained is then diluted, preferably while still in the mixer. A method for determining solution viscosity is described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US468993XA | 1935-08-20 | 1935-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB468993A true GB468993A (en) | 1937-07-16 |
Family
ID=21945987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20550/36A Expired GB468993A (en) | 1935-08-20 | 1936-07-24 | Preparation of cellulose xanthate solutions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB468993A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2558038A (en) * | 1946-11-23 | 1951-06-26 | American Viscose Corp | Production of cellulose xanthate |
-
1936
- 1936-07-24 GB GB20550/36A patent/GB468993A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2558038A (en) * | 1946-11-23 | 1951-06-26 | American Viscose Corp | Production of cellulose xanthate |
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