GB861831A - An improved process for the manufacture of artificial threads and staple fibres fromviscose, as well as the threads and staple fibres thus obtained - Google Patents
An improved process for the manufacture of artificial threads and staple fibres fromviscose, as well as the threads and staple fibres thus obtainedInfo
- Publication number
- GB861831A GB861831A GB39523/58A GB3952358A GB861831A GB 861831 A GB861831 A GB 861831A GB 39523/58 A GB39523/58 A GB 39523/58A GB 3952358 A GB3952358 A GB 3952358A GB 861831 A GB861831 A GB 861831A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spinbath
- threads
- sulphuric acid
- viscose
- stretched
- 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)
- Artificial Filaments (AREA)
Abstract
Viscose containing 4.8-7.5% by weight, preferably 6-7% by weight, of total alkali (calculated as sodium hydroxide) is spun into an aqueous spinbath containing sulphuric acid, sodium sulphate and 0.1-2% by weight of zinc sulphate, and the filaments so formed are stretched, the percentage by weight of sulphuric acid in the spinbath lying between a minimum and a maximum calculated respectively from the formul A-1-2B 1/3 and A+0.5-B 3/2 , where A is the percentage of total alkali in the viscose and B is the percentage of zinc sulphate in the spinbath. The sulphuric acid content of the spinbath is preferably at least 3%. The cellulose content of the viscose may be 5.0-8.5%, preferably 6-8%, and in the xanthation step the proportion of carbon bisulphide based on cellulose may be 25-50%, preferably 32-40%. The sodium sulphate content of the spinbath is preferably 12-26% and the temperature of the spinbath may be 30-70 DEG C., preferably 40-60 DEG C. The freshly-formed threads may be stretched in the spin bath but are preferably stretched at least 50% in a hot second bath consisting of a hot dilute aqueous solution of sulphuric acid, e.g. a 1-3% solution at 80-100 DEG C. In an example, viscose containing 7.3% of cellulose, 6.8% of total alkali (expressed as sodium hydroxide) and 2.25% of total sulphur is spun at a Hottenroth number of 10.5 into a spinbath at 50 DEG C. containing 5% of sulphuric acid, 18% of sodium sulphate and 1.0% of zinc sulphate. The threads are then stretched 110% in a second bath maintained at 90 DEG C. Cation-active compounds may be incorporated in the viscose and/or the spinbath to prevent deposition of zinc sulphide on the thread-guides &c. when the sulphuric acid and zinc sulphate concentrations in the spinbath are low and high, respectively. The stress-strain diagrams of threads produced according to the invention resemble those of natural cotton threads, and the threads are therefore suitable for making yarns composed of mixtures of the two types of fibres.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US861831XA | 1957-12-26 | 1957-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB861831A true GB861831A (en) | 1961-03-01 |
Family
ID=22196839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39523/58A Expired GB861831A (en) | 1957-12-26 | 1958-12-08 | An improved process for the manufacture of artificial threads and staple fibres fromviscose, as well as the threads and staple fibres thus obtained |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1229698A (en) |
| GB (1) | GB861831A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2664697B1 (en) | 2012-05-14 | 2016-03-02 | Glanzstoff Bohemia s.r.o. | Flame retardant cellulose regenerated fibers and process for their preparation |
| US9828697B2 (en) | 2011-05-12 | 2017-11-28 | Glanzstoff Bohemia S.R.O. | Flame-retardant regenerated cellulose filament fibers and process for production thereof |
-
1958
- 1958-12-08 GB GB39523/58A patent/GB861831A/en not_active Expired
- 1958-12-18 FR FR781995A patent/FR1229698A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9828697B2 (en) | 2011-05-12 | 2017-11-28 | Glanzstoff Bohemia S.R.O. | Flame-retardant regenerated cellulose filament fibers and process for production thereof |
| EP2664697B1 (en) | 2012-05-14 | 2016-03-02 | Glanzstoff Bohemia s.r.o. | Flame retardant cellulose regenerated fibers and process for their preparation |
| EP2664697B2 (en) † | 2012-05-14 | 2018-05-23 | Glanzstoff Bohemia s.r.o. | Flame retardant cellulose regenerated fibers and process for their preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1229698A (en) | 1960-09-08 |
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