DE1669422B2 - Process and device for the production of acrylonitrile polymer spinning solutions - Google Patents
Process and device for the production of acrylonitrile polymer spinning solutionsInfo
- Publication number
- DE1669422B2 DE1669422B2 DE19671669422 DE1669422A DE1669422B2 DE 1669422 B2 DE1669422 B2 DE 1669422B2 DE 19671669422 DE19671669422 DE 19671669422 DE 1669422 A DE1669422 A DE 1669422A DE 1669422 B2 DE1669422 B2 DE 1669422B2
- Authority
- DE
- Germany
- Prior art keywords
- steam
- solutions
- nozzle
- ring
- procedure
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
- C08J3/11—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids from solid polymers
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/065—Addition and mixing of substances to the spinning solution or to the melt; Homogenising
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/18—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/18—Homopolymers or copolymers of nitriles
- C08J2333/20—Homopolymers or copolymers of acrylonitrile
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
sondern auch Mischpolymerisate des Acrylnitril nut wejst . { Ausrührungsform einerbut also copolymers of acrylonitrile nut wejst. { Embodiment of a
anderen Monomeren, beispielsweise nut Vinylchlorid, 55 CM ^b 'dU"g ζ B u des Verfahrens.other monomers, for example nut vinyl chloride, 55 CM ^ b 'd U "g ζ B u of the process .
Vinylidenchlorid. Vinylacetat, Acrylsäure- bzw. Me h- ^^"^1^,^ zuzuführcnden Lösemittel wirdVinylidene chloride. Vinyl acetate, acrylic acid or meth- ^^ "^ 1 ^, ^ solvent to be added
acrylsäureestern oder -amiden oder nut saure ouer VoI1 dcn gjsanuen ν■ etwa 20 bjs 25»o) acrylic acid esters or amides or only acidic ouer VoI 1 dcn gjsanuen ν ■ about 20 bjs 25 » o)
basische Gruppen enthaltenden Monomeren verstan- ^TciMl bis 50.^ ^ B8ohrungen ,fl der ringför.Basic group-containing monomers understood up to 50. ^ ^ B 8 ohrungen , fl the ringför .
insbesondere im großtechnischen Maßstab ist es er- *o ^χ^^αΛΑΐ ^^especially on an industrial scale it is er * o ^ χ ^^ αΛΑΐ ^^
forderlich, möglichst hochkonzentrierte Lösungen ein- expand^ ^ ^^^ auf sehr hohe, im allge-It is necessary to expand as highly concentrated solutions as possible ^ ^ ^^^ to very high, generally
zusetzen, um die Wirtschaftlichkeit des Verfahrens zu ^^^^,L^hvvin ligkeit und tritt in denadd to the economy of the process to ^^^^, L ^ hvvin ligkeit and occurs in the
gewährleisten. Um nach Möglichkeit em Zusammen- ^^^^f^end/wahl der Temperaturguarantee. In order, if possible, to combine the temperature
backen und eine Gelbildung zu vermeiden, w.rd das ^um 3 e "f ^"^ sfch nach der Temperaturbestän-bake and avoid gel formation, w.rd the ^ by 3 e " f ^" ^ s f ch according to the temperature resistance
Polymcrisatpulver in dem organischen Lösungsmittel 65 ., 1 V«damP^u (J'^ J,els zu richten hat) und daherPolymer powder in the organic solvent 65., 1 V « dam P ^ u ( J '^ J, els has to be directed ) and therefore
dispergiert und anschließend unter Erwärmung gelost d gkα d^Lo^ngn 1 ^ ^ ^ ^^ ft dispersed and then dissolved under heating d gkα d ^ Lo ^ ngn 1 ^ ^ ^ ^^ ft
^^^SiS^ÄÄrS SSÄU evakuierten Raum 3 wird das zur^^^ SiS ^ ÄÄrS SSÄU evacuated room 3 is the
Erzeugung hoher Ausiriüsgeschwindigkciten aus der Dü>e 2 notwendige Druckverhältnis /\ p:i eingestellt. Bei atmosphärischem Druck im Raum 3 und Dimethvlformamid als Lösungsmittel ist/J1 vorzugsweise 1.5 bis 2.5 aiii.Generation of high Ausiriüsgeschwindigkciten from the nozzle> e 2 necessary pressure ratio / \ p : i set. At atmospheric pressure in room 3 and dimethylformamide as solvent, / J 1 is preferably 1.5 to 2.5 aiii.
Der nicht verdampfte, flüssige, etwa 75"„ ausmachende Ti.ü des Lösungsmittels wird mii einer Temperatur von 50 bis 80 C über Bohrungen 4 in den Ringkanal 5 eingespeist und tritt aus diesem durch eine Anzahl (beispielsweise 4. 6, S, 16 oder mehr) gleichmäüig auf den Umfang verteilter Röhrchen 6 in die Kammer 1 ein. Die AustriUsriehUing der Flüssigkeit weist zweckmäßig genau auf den Lintrittsquerschnitt der Ringdüse 2.The non-evaporated liquid, about 7 5 "" making up Ti.ü the solvent is fed mii a temperature of 50 to 80 C over holes 4 into the annular channel 5 and exits this through a number (for example, 4. 6, S, 16 or more) tubes 6 evenly distributed over the circumference into the chamber 1. The discharge of the liquid expediently points precisely to the entry cross-section of the annular nozzle 2.
Gleichzeitig mit dem die Düse 2 verlassenden, einen nach unten spitzen Hegel bildenden Dampfnüsiigkeitsstrahl rieselt aus der konzentrisch zur Ringdiise 2 angebrachten Mündung 7 des Zuführungsrohres 8 kontinuierlich, ein Strahl des zu löser len Acrylnitrilpolv merisatpulvers.Simultaneously with the one leaving the nozzle 2 downwardly pointy Hegel-forming jet of vaporous liquid trickles out of the mouth 7 of the feed pipe 8, which is attached concentrically to the ring nozzle 2 continuously, a beam of the Acrylonitrilpolv to be dissolved merisate powder.
In angemessener Entfernung unterhalb der beschriebenen Lösevorrichtung fällt dann die fertige Spinnlösung an, deren Konzentration dem Verhältnis der Mengenslröme von Acrylnitrilpolvmerisatpulver und Lösungsmittel entspricht.At a reasonable distance below the one described Dissolving device then falls to the finished spinning solution, the concentration of which is the ratio of Quantities of acrylonitrile polymer powder and Solvent corresponds.
Es ergeben sich folgende Vorteile gegenüber den bekannten Misch- und Lösevorrichtungen: Es sind keine bewegten Teile (Wellen, Lager, Stopfbuchsen usw.) vorhanden. Der eigentlici.» Lösevorgang findet im freien Strahl statt, es gibt keine Wände, an denen Pulver anbackt und zu Verklebungen oder Verkrustunuen führt. Es liegt eine hohe Durchsatzleisuing bei sehr geringen Abmessungen der Lösevorrichtung \or.There are the following advantages over the known mixing and dissolving devices: There are there are no moving parts (shafts, bearings, stuffing boxes, etc.). The real one. " Solving process takes place instead of in the open air, there are no walls against which Powder caked on and stuck together or encrusted leads. A high throughput is included very small dimensions of the release device \ or.
Dimethylformamid wird in einem Verdampfer bei 2lKi C und /) 1.75 aiii verdampft, und der Dampf strömt zur Lösevorrichtung. Gleichzeitig wird aus einer beheizten Vorlage auf 65 C \orgewarmies flüssiaes Dimethylformamid 'ti die Lösevorrichtung gepumpt. Das Dampfflüs-.igkeitsgemisch tritt aus einer ringförmigen Lavaldüse nut 28 mm- freiem engstem Querschnitt wie beschrieben kegelförmig nach unten aus und trifft auf den AcrvlnitrilpoKmcrisaipulserstrahl. der mittels Druckluft aus einem geeignet geformten Vorratsgefäß durc,·. eine Mündung von } mm Durchmesser nach unten herausgedrückt wird.Dimethylformamide is evaporated in an evaporator at 2lKi C and /) 1.75 aiii, and the steam flows to the dissolving device. At the same time, the dissolving device is pumped from a heated receiver to 65 C \ orgewarmies of liquid dimethylformamide. The vapor-liquid mixture emerges conically downwards from an annular Laval nozzle with a narrowest cross-section free of 28 mm, as described, and hits the acrvlnitrile-polymeric pulse jet. which by means of compressed air from a suitably shaped storage vessel durc, ·. an orifice with a diameter of} mm is pushed out downwards.
in einer Glasvorlage unterhalb der Lösevorrichtung fällt die etwa S5 C warme Spinnlösung an. die gegebe-'ienfalls zum Ausgleich kleiner Dosierungsschwankungen in einer nachgeschalteten Schnecken- oder ähnlichen Vorrichtung homogenisiert werden kann Nut den angegebenen Strömungsquerschniiten für Pulver und Flüssigkeitsdampfgemisch wird eine Durchsatzleistung von etwa 250 kg h 26"„iger Spinnlösung erreicht.The spinning solution, which is about S5 C warm, is obtained in a glass template below the dissolving device. if necessary to compensate for small fluctuations in dosage in a downstream screw or Similar device can be homogenized groove the specified flow cross sections for Powder and liquid vapor mixture becomes a throughput capacity reached by about 250 kg h of 26 "strength spinning solution.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF0051738 | 1967-03-07 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1669422A1 DE1669422A1 (en) | 1971-06-03 |
DE1669422B2 true DE1669422B2 (en) | 1973-09-13 |
DE1669422C3 DE1669422C3 (en) | 1974-04-11 |
Family
ID=7104864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19671669422 Granted DE1669422B2 (en) | 1967-03-07 | 1967-03-07 | Process and device for the production of acrylonitrile polymer spinning solutions |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1669422B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3309767A1 (en) * | 1983-03-18 | 1984-09-20 | Bayer Ag, 5090 Leverkusen | Process and apparatus for producing acrylonitrile-polymer spinning solutions |
-
1967
- 1967-03-07 DE DE19671669422 patent/DE1669422B2/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3309767A1 (en) * | 1983-03-18 | 1984-09-20 | Bayer Ag, 5090 Leverkusen | Process and apparatus for producing acrylonitrile-polymer spinning solutions |
Also Published As
Publication number | Publication date |
---|---|
DE1669422C3 (en) | 1974-04-11 |
DE1669422A1 (en) | 1971-06-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1081185B (en) | Process for the production of fine threads from high molecular weight, aliphatic polyolefins | |
DE487242C (en) | Process for the production of artificial threads according to the dry spinning process | |
DE1215934B (en) | Process for the production of spinnable solutions of acrylonitrile polymers | |
DE1669422B2 (en) | Process and device for the production of acrylonitrile polymer spinning solutions | |
DE7819536U1 (en) | DEVICE FOR PURIFYING GAS | |
DE2506438B2 (en) | Process for the thermal cracking of waste sulfuric acid | |
DE1163294B (en) | Device for washing gases | |
CH376656A (en) | Process for the production of shrinkable films from polyolefins or their copolymers | |
DE3528181A1 (en) | METHOD FOR MODIFYING THE SURFACE OF POLYTETRAFLUORETHYLENE | |
DE763277C (en) | Process for the production of threads from films of plastics | |
DE2315458A1 (en) | PROCESS FOR SURFACE TREATMENT OF PLASTIC OBJECTS | |
DE1094918B (en) | Process for the production of threads from polypropylene | |
DE741010C (en) | Method and device for the production of hollow rayon threads | |
DE1929887C3 (en) | Device for the continuous mixing of two liquid media to form a foam product made of synthetic resin | |
DE1246678B (en) | Process and device for wet cleaning of dust-laden gases | |
DE1642173A1 (en) | Manufacturing process for wood-plastic combinations | |
DE1234028C2 (en) | Process for the production of directly spinnable polyacrylonitrile copolymer solutions | |
DE886951C (en) | Process for the production of artificial structures from copolymers of vinyl chloride and vinyl acetate | |
DE906744C (en) | Process for the production of threads or fibers from solutions of oxygen-free dichloroethylene polymers | |
DE1905099A1 (en) | Modified polyamides with increased affinity for acidic dyes | |
DE832883C (en) | Mesh catalyst for ammonia oxidation | |
DE869676C (en) | Method and device for spinning threads from solutions of cellulose in sulfuric acid or other mineral acids | |
DE1235502B (en) | Process for the production of spinning solutions from polymers of acrylonitrile | |
DE1595834C (en) | separator | |
AT235253B (en) | Process and apparatus for the production of acetylene |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
E77 | Valid patent as to the heymanns-index 1977 | ||
8339 | Ceased/non-payment of the annual fee |