GB577718A - Process for the production of coloured artificial filaments of high tenacity - Google Patents
Process for the production of coloured artificial filaments of high tenacityInfo
- Publication number
- GB577718A GB577718A GB6911/44A GB691144A GB577718A GB 577718 A GB577718 A GB 577718A GB 6911/44 A GB6911/44 A GB 6911/44A GB 691144 A GB691144 A GB 691144A GB 577718 A GB577718 A GB 577718A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- cellulose acetate
- per cent
- black
- coloured
- 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
- D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
- D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate
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
Filaments having a basis of cellulose acetate which are free from high boiling solvents or plasticisers and contain a coloured (including black) pigment, are stretched until they have a tenacity of at least 2.5 grams per denier. The filaments may thereafter be substantially completely saponified. The coloured filaments obtained are of a high degree of fastness. The pigments are water-insoluble substances which have no affinity for the filaments when applied in a conventional aqueous dyebath, and carbon black, lamp black and graphite are given as examples. The pigment may be added to the spinning solution in the form of a solid pigmented base material, the said base being soluble in the spinning solution. Sufficient of this material is added to the spinning solution to yield a dope containing from 0.1 to 5.0 per cent of pigment on the weight of cellulose acetate present. The coloured filaments formed from this dope are then stretched until they have a tenacity of at least 2.5 grams per denier, while in the softened condition due to the presence of solvents, latent solvents or swelling agents, for example, steam. The stretched filaments may then be saponified by means of inorganic or organic bases, a number of which are specified. In an example, to a spinning solution containing 25 per cent of cellulose acetate in 95/5 acetone/water is added sufficient black lacquer chip material to form a solution containing 26 parts of cellulose acetate, 74 parts of acetone/water and 2-5 per cent of carbon black on the weight of the cellulose acetate. The solution is dry spun into 480 denier 40 filament yarn which is then stretched to ten times its length in steam at 135 DEG C., and finally saponified in an aqueous bath at 80 DEG C. containing 0.6 per cent of sodium hydroxide and 10 per cent of sodium acetate. The yarns are pure black and have a tenacity of over 5 grams per denier. Grey or neutral shade filaments produced by the invention may be topped with a small proportion of a direct dye, as in Specification 405,264. Specifications 459,164 and 510,761 also are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US577718XA | 1943-04-16 | 1943-04-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB577718A true GB577718A (en) | 1946-05-29 |
Family
ID=22012663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6911/44A Expired GB577718A (en) | 1943-04-16 | 1944-04-14 | Process for the production of coloured artificial filaments of high tenacity |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB577718A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1272694A1 (en) * | 2000-03-27 | 2003-01-08 | SK Chemicals Co., Ltd. | Cellulosic materials having composite crystalline structure |
-
1944
- 1944-04-14 GB GB6911/44A patent/GB577718A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1272694A1 (en) * | 2000-03-27 | 2003-01-08 | SK Chemicals Co., Ltd. | Cellulosic materials having composite crystalline structure |
| EP1272694A4 (en) * | 2000-03-27 | 2009-05-13 | Sk Chemicals Co Ltd | Cellulosic materials having composite crystalline structure |
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