GB685850A - Method of making artificial fibers or threads from viscose - Google Patents
Method of making artificial fibers or threads from viscoseInfo
- Publication number
- GB685850A GB685850A GB4692/50A GB469250A GB685850A GB 685850 A GB685850 A GB 685850A GB 4692/50 A GB4692/50 A GB 4692/50A GB 469250 A GB469250 A GB 469250A GB 685850 A GB685850 A GB 685850A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- weight
- acetic acid
- viscose
- sodium sulphate
- 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
- 229920000297 Rayon Polymers 0.000 title abstract 7
- 238000004519 manufacturing process Methods 0.000 title 1
- 229920002994 synthetic fiber Polymers 0.000 title 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 21
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 9
- 150000003839 salts Chemical class 0.000 abstract 6
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract 6
- 235000011152 sodium sulphate Nutrition 0.000 abstract 6
- 229920002678 cellulose Polymers 0.000 abstract 5
- 239000001913 cellulose Substances 0.000 abstract 5
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 abstract 3
- 239000001632 sodium acetate Substances 0.000 abstract 3
- 235000017281 sodium acetate Nutrition 0.000 abstract 3
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 230000001112 coagulating effect Effects 0.000 abstract 2
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 abstract 2
- 239000001117 sulphuric acid Substances 0.000 abstract 2
- 235000011149 sulphuric acid Nutrition 0.000 abstract 2
- 239000012991 xanthate Substances 0.000 abstract 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
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)
- Artificial Filaments (AREA)
Abstract
Viscose having a sodium chloride salt point of from 3 to 12 is extruded into an aqueous non-regenerating coagulating bath containing 1 to 20 per cent by weight of acetic acid and from 5 to 30 per cent by weight of sodium sulphate, sodium acetate or a mixture of sodium sulphate and sodium acetate, the total concentration of salt and acetic acid being at least 15 per cent by weight and the so-formed continuous filaments being withdrawn from the bath and stretched. Preferably the filaments are subjected to the maximum stretch they will take without breaking, from 50 to 200 per cent. The higher the salt point or the lower the cellulose/caustic soda ratio in the viscose the greater should be the concentration of acetic acid in the bath. Thus it is preferred to use a bath containing 5 to 20 per cent acetic acid and 10 to 20 per cent sodium sulphate for a viscose of salt point 4 to 10, and a bath containing 5 to 15 per cent acetic acid and 5 to 20 per cent sodium sulphate for a viscose of salt point 4 to 6.9. Viscoses of salt point 4 to 6 are preferred. The concentration of acetic acid in the coagulating bath may be maintained by addition of fresh acid or of the calculated amount p of sulphuric acid to react with the sodium acetate formed. The cellulose/caustic soda ratio may be 1 : 1, preferably 1.05 to 1, and should not exceed 2 : 1. The cellulose xanthate filaments formed yield, after subsequent regeneration, yarn characterized by low extensibility, especially when wet, and good tenacity. In an example a viscose of cellulose/caustic soda ratio 1.05 : 1 of normal viscosity and salt point of 4.4 is spun into an aqueous bath containing 10 per cent by weight of acetic acid and 10 per cent by weight of sodium sulphate at 50 DEG C. The cellulose xanthate filaments are given the maximum stretch short of rupture, and then regenerated in a bath at 40 DEG C. containing 20 per cent by weight of sulphuric acid and 10 per cent by weight of sodium sulphate. The yarn so obtained is twisted, washed, desulphurized and bleached in the usual manner.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US87088A US2594496A (en) | 1949-04-12 | 1949-04-12 | Method of making artificial fibers or threads from viscose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB685850A true GB685850A (en) | 1953-01-14 |
Family
ID=22203045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4692/50A Expired GB685850A (en) | 1949-04-12 | 1950-02-23 | Method of making artificial fibers or threads from viscose |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2594496A (en) |
| GB (1) | GB685850A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL76456C (en) * | 1951-05-12 | |||
| US2775505A (en) * | 1952-06-05 | 1956-12-25 | American Viscose Corp | Spinning regenerated cellulose filaments |
| US2937070A (en) * | 1955-08-02 | 1960-05-17 | Du Pont | Viscose process |
| NL233933A (en) * | 1957-12-26 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US792888A (en) * | 1905-04-20 | 1905-06-20 | Charles A Ernst | Process of manufacturing filaments from viscose. |
| US2328307A (en) * | 1940-04-05 | 1943-08-31 | American Enka Corp | Manufacture of rayon |
-
1949
- 1949-04-12 US US87088A patent/US2594496A/en not_active Expired - Lifetime
-
1950
- 1950-02-23 GB GB4692/50A patent/GB685850A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2594496A (en) | 1952-04-29 |
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