DE919665C - Process for improving the properties of polyacrylonitrile and copolymers of acrylonitrile with other vinyl compounds - Google Patents
Process for improving the properties of polyacrylonitrile and copolymers of acrylonitrile with other vinyl compoundsInfo
- Publication number
- DE919665C DE919665C DEF10079A DEF0010079A DE919665C DE 919665 C DE919665 C DE 919665C DE F10079 A DEF10079 A DE F10079A DE F0010079 A DEF0010079 A DE F0010079A DE 919665 C DE919665 C DE 919665C
- Authority
- DE
- Germany
- Prior art keywords
- acrylonitrile
- copolymers
- polyacrylonitrile
- properties
- vinyl compounds
- 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
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/80—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides
- D06M11/81—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides with boron; with boron halides; with fluoroborates
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Description
Verfahren zur Verbesserung der Eigenschaften von Po-lyacrylnitril und Mischpolymerisaten von Acrylnitril mit anderen Vinylverbindungen Polymerisate und Mischpolymerisate von Acrylnitril sind 'bekannt und finden in der Technik eine vielseitige Anwendung. Es wurde gefunden, daß sich Polyacrylnitril und Mischpolymerisate des Acrylnitrils mit anderen Vinylverbindungen in ihren Eigenschaften durch Behandlung mit Borhalogeniden, insbesondere mit Borfluorid, verbessern lassen. Die Einwirkung !kann auf beliebige Weise, z. B. in Lösung oder .in Dampf- bzw. Gasform, erfolgen. Man arbeitet zweckmäßig so, da,ß man z. B. gasförmiges Borfluorid auf Polymerisate von Acrylnitril oder von Acrylnitril mit anderen Vinylverbindungen einwirken läßt, indem man die Polymerisate in einem geschlossenen Behälter mit Borfluorid :begast. Die Dauer des Begasens richtet sich danach, wie weit die Eigenschaften des Materials geändert werden sollen.Process for improving the properties of polyacrylonitrile and copolymers of acrylonitrile with other vinyl compounds and copolymers of acrylonitrile are 'known and found in the art versatile application. It was found that polyacrylonitrile and copolymers the properties of acrylonitrile with other vinyl compounds by treatment with boron halides, in particular with boron fluoride, can be improved. The impact ! can be used in any way, e.g. B. in solution or. In vapor or gas form. One works expediently so that, ß one z. B. gaseous boron fluoride on polymers allows acrylonitrile or acrylonitrile to act with other vinyl compounds, by gassing the polymers with boron fluoride in a closed container. The duration of the gassing depends on how far the properties of the material are should be changed.
Man kann die Begasung sowohl der trockenen Polymerisate als auch nach deren Verarbeitung zu Fasern und Filmen vornehmen. Die Behandlung von Webstücken erfolgt zweckmäßig in einem Behälter, der durch Evakuieren zunächst entgast wird. Das vom Gewebe nicht aufgenommene Borfluorid kann durch Abpumpen wiedergewonnen werden.You can the gassing both the dry polymers and after process them into fibers and films. Treatment of pieces of weave expediently takes place in a container which is first degassed by evacuation. The boron fluoride not absorbed by the tissue can be recovered by pumping out will.
Die Gewichtszunahme beträgt bis zu 3o%.The weight gain is up to 3o%.
Ein auf solche Weise mit Borhalogeniden, inshesondere Borfluorid behandeltes Poly.merisat besitzt eine erheblich herabgesetzte Brennbarkeit gegenüber dem nicht behandelten Material. So brennt beispielsweise ein .behandelter angezündeter Faden aus Polyacrylnitril nicht weiter, sondern erlischt von selbst.One treated in this way with boron halides, in particular boron fluoride Poly.merisat has a significantly reduced flammability compared to not treated material. So burns a. treated ignited thread made of polyacrylonitrile does not continue, but goes out by itself.
Bekanntlich lassen -sich Polymerisate aus Polyacrylnitril und Mischpolymerisate aus Acrylnitril mit Vinylverbindungen mit den meisten Farbstoffen nicht oder nur schwer anfärben.It is known that polymers made from polyacrylonitrile and copolymers can be used from acrylonitrile with vinyl compounds with most dyes only or not at all difficult to stain.
Es würde nun die überraschende Beobachtung gemacht, @daß,die obengenannten Polymerisate nach einer solchen Behandlung insbesondere mit Borfluorid eine ausgezeichnete Anf'ärbbarlceit sowohl mit basischen wie mit sauren Farbstoffen, Entwicklungs- und Küpenfarbstoffen aufweisen.The surprising observation would now be made that the above Polymers after such a treatment, in particular with boron fluoride, are excellent Can be stained with both basic and acidic dyes, developing agents and Have vat dyes.
Werden die Polymerisate nach der Behandlung mit heißem Wasser gewaschen, so geht die bessere Anfärbbarkeit trotzdem nicht verloren.If the polymers are washed with hot water after the treatment, so the better stainability is still not lost.
Beispiel i -Ein .aus Polyacrylnitril-Stapelfase-r hergestellter Faden, der auf eine Spule aufgewickelt ist, wird in einen eväkuier'baren Behälter gelegt, und dieser wird evakuiert. Anschließend wird trockenes BF.- Gas eingelassen und der nicht aufgenommene Anteil nach 3 Stunden abgepumpt.Example i - A thread made from polyacrylonitrile staple fiber, which is wound on a reel is placed in an evacuable container, and this is evacuated. Then dry BF. Gas is admitted and the portion not absorbed is pumped out after 3 hours.
Der Faden hat etwa 3001o an Gewicht zugenommen. Beispiel 2 Ein aus 95 Teilen Acrylnitril und 5 Teilen Vinylacetat hergestelltes Mischpo-lymerisat wird mit Borfluorid i Stunde behandelt und in einem geeigneten Lösungsmittel, wie Dimethylformamid, in Lösung gebracht.The thread has gained about 3001o in weight. Example 2 A mixed polymer prepared from 95 parts of acrylonitrile and 5 parts of vinyl acetate is treated with boron fluoride for one hour and dissolved in a suitable solvent, such as dimethylformamide.
Die Lösung kann zu Fäden versponnen oder zur Herstellung von Filmen verwendet werden, die im Gegensatz zu nicht mit Borfluorid behandelten Polymerisaten eine ausgezeichnete Anfärbbarkeit zeigen.The solution can be spun into threads or used to make films used, in contrast to polymers not treated with boron fluoride show excellent dyeability.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF10079A DE919665C (en) | 1952-10-08 | 1952-10-08 | Process for improving the properties of polyacrylonitrile and copolymers of acrylonitrile with other vinyl compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF10079A DE919665C (en) | 1952-10-08 | 1952-10-08 | Process for improving the properties of polyacrylonitrile and copolymers of acrylonitrile with other vinyl compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE919665C true DE919665C (en) | 1954-11-02 |
Family
ID=7086355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEF10079A Expired DE919665C (en) | 1952-10-08 | 1952-10-08 | Process for improving the properties of polyacrylonitrile and copolymers of acrylonitrile with other vinyl compounds |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE919665C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122445A (en) * | 1961-04-25 | 1964-02-25 | Du Pont | Treating fluorocarbon polymer film with boron trifluoride and oxygen |
| DE1238204B (en) * | 1957-12-06 | 1967-04-06 | Du Pont | Process for improving the surface properties of molded articles made of thermoplastic organic polymeric materials |
-
1952
- 1952-10-08 DE DEF10079A patent/DE919665C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1238204B (en) * | 1957-12-06 | 1967-04-06 | Du Pont | Process for improving the surface properties of molded articles made of thermoplastic organic polymeric materials |
| US3122445A (en) * | 1961-04-25 | 1964-02-25 | Du Pont | Treating fluorocarbon polymer film with boron trifluoride and oxygen |
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