DE1085292B - Process for the production of structures from polyacrylonitrile and / or its copolymers - Google Patents
Process for the production of structures from polyacrylonitrile and / or its copolymersInfo
- Publication number
- DE1085292B DE1085292B DEV16441A DEV0016441A DE1085292B DE 1085292 B DE1085292 B DE 1085292B DE V16441 A DEV16441 A DE V16441A DE V0016441 A DEV0016441 A DE V0016441A DE 1085292 B DE1085292 B DE 1085292B
- Authority
- DE
- Germany
- Prior art keywords
- polyacrylonitrile
- copolymers
- production
- structures
- urea
- 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.)
- Pending
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
- 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
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- 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
- D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/38—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated nitriles as the major constituent
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Filaments (AREA)
Description
Verfahren zur Herstellung von Gebilden aus Polyacrylnitril und bzw. oder seinen Mischpolymerisaten Es ist bekannt, daß man das Aussehen oder die Anfärbbarkeit von Fasern und anderen Gebilden aus Polyacrylnitril und dessen Mischpolymerisaten durch Hinzufügen von Substanzen, wie Titandioxyd oder Phenolaldehydharzen, verbessern kann. Man hat auch schon Aldehyde, insbesondere Formaldehyd, für die Behandlung von pulverförmigem, gelöstem oder bereits verformtem Polyacrylnitril (rein oder Mischpolymerisat) verwendet. Der dabei erreichte Effekt dient vor allem der Verbesserung der Löseeigenschaften des Pulvers und der thermischen Beständigkeit der Gebilde. Ferner ist bereits Harnstoff für die Stabilisierung salpetersaurer Polyacrylnitrillösungen zur Anwendung gelangt. Diese Zusätze verändern die physikalischen Eigenschaften der Gebilde nur wenig. Insbesondere werden dabei die Kräuselungseigenschaften der Fäden nicht verbessert. Die Kräuselung ist ungenügend und ungleichmäßig, der Griff oft hart und rauh.Process for the production of structures made of polyacrylonitrile and / or or its copolymers It is known that the appearance or the colorability of fibers and other structures made of polyacrylonitrile and its copolymers by adding substances such as titanium dioxide or phenol aldehyde resins can. Aldehydes, especially formaldehyde, are already available for treatment of powdered, dissolved or already shaped polyacrylonitrile (pure or Mixed polymer) is used. The effect achieved in this way serves primarily to improve the dissolving properties of the powder and the thermal resistance of the structure. Furthermore, urea is already used to stabilize nitric acid polyacrylonitrile solutions is applied. These additives change the physical properties the structures only a little. In particular, the crimping properties of the Threads not improved. The crimp is insufficient and uneven, the grip often hard and rough.
Es wurde nun gefunden, daß man diesen Nachteil dadurch beseitigt und außerdem eine Aufhellung der Gebilde erreicht, wenn man den zu verspinnenden Lösungen von Polyacrylnitril und bzw. oder seinen Mischpolymerisaten in einem organischen Lösungsmittel, wie Dimethylformamid, Formaldehyd und bzw. oder seine Derivate sowie Harnstoff und bzw. oder seine Derivate zusetzt und nach dem Verformen die zugefügten Verbindungen durch eine thermische Behandlung polykondensiert. Diese Polykondensation wird vorteilhaft bei Temperaturen bis zu 180°C durchgeführt. Zweckmäßig beträgt die Gesamtmenge der der Spinnlösung zugesetzten Substanzen bis zu 10°/0 (auf die Spinnlösung bezogen).It has now been found that this disadvantage is eliminated and In addition, a lightening of the structure is achieved when one looks at the solutions to be spun of polyacrylonitrile and / or its copolymers in an organic Solvents such as dimethylformamide, formaldehyde and / or its derivatives as well Urea and / or its derivatives are added and, after deformation, the added Compounds polycondensed by thermal treatment. This polycondensation is advantageously carried out at temperatures up to 180 ° C. Appropriate amounts the total amount of substances added to the spinning solution up to 10% (to the Related spinning solution).
Als Zusätze gemäß der Erfindung seien beispielsweise genannt: Formaldehyd oder Paraformaldehyd sowie Harnstoff oder Thioharnstoff.Examples of additives according to the invention are: formaldehyde or paraformaldehyde and urea or thiourea.
Die Polykondensation wird z. B. durch Kontakterhitzung auf geeigneten Platten oder Kalanderwalzen, durch Strahlungsheizung (z. B. Infrarotstrahlen), durch Induktionsheizung oder mit Hilfe von geeigneten Heizflüssigkeiten, wie Gase oder Dämpfe, erreicht. Der nach der thermischen Behandlung vorliegende Faden zeigt eine gute und beständige Kräuselung, einen sehr fülligen der Schafwolle ähnlichen Griff und eine starke Vergrößerung des Weißgehaltes.The polycondensation is z. B. by contact heating on suitable Plates or calender rolls by radiant heating (e.g. infrared rays) Induction heating or with the help of suitable heating fluids, such as gases or Fumes, reached. The thread present after the thermal treatment shows a good and consistent crimp, a very full feel similar to sheep's wool and a strong increase in the whiteness.
Beispiel 1 Eine Spinnlösung wird aus 1275 g Dimethylformamid 225 g Polyacry1nitril (K-Wert 109) 10,12 g Harnstoff 0,25 g Paraformaldehyd 4,50 g Oxalsäure hergestellt und nach einem bekannten Spinnverfahren versponnen. -Ein Teil der Verstreckung der erhaltenen Fäden wird über einer Heizplatte bei einer Temperatur von 170 bis 180°C durchgeführt. Der so behandelte Faden ist weiß, weich, matt, hat einen geschlossenen Querschnitt und weist gute Kräuselung auf.Example 1 A spinning solution is made from 1275 g of dimethylformamide into 225 g Polyacrylonitrile (K value 109) 10.12 g urea 0.25 g paraformaldehyde 4.50 g oxalic acid produced and spun according to a known spinning process. -A part of the stretching the filaments obtained are placed over a hot plate at a temperature of 170 to 180 ° C carried out. The thread treated in this way is white, soft, matt, has a closed one Cross-section and has good curling.
Beispiel 2 Eine Spinnlösung aus 1275 g Dimethylformamid 225 g Polyacrylnitril (K-Wert 107) 0,56 g Harnstoff 1,69 g Paraformaldehyd 4,50 g Oxalsäure wird in bekannter Weise versponnen. Die Verstreckung der Fäden wird zum Teil über einer Heizplatte bei einer Temperatur von etwa 170°C durchgeführt. Der Faden wird dadurch ebenfalls weiß, weich, matt und erhält auch einen geschlossenen Querschnitt. Außerdem wird eine sehr gute und beständige Kräuselung erzielt.Example 2 A spinning solution of 1275 g of dimethylformamide and 225 g of polyacrylonitrile (K value 107) 0.56 g urea 1.69 g paraformaldehyde 4.50 g oxalic acid is known in Way spun. The threads are drawn in part over a heating plate carried out at a temperature of about 170 ° C. The thread is thereby also white, soft, matt and also has a closed cross-section. In addition, will a very good and consistent crimp is achieved.
Beispiel 3 Eine Spinnlösung aus 1275 g Dimethylformamid 225 g Polyacrylnitril (K-Wert 103) 0,56 g Thioharnstoff 2,25 g Paraformaldehyd 4,50 g Oxalsäure wird versponnen und die Nachbehandlung in gleicher Weise wie in den vorangehenden Beispielen vorgenommen. Der Faden hat die gleichen Eigenschaften, wie im Beispiel 2 angegeben.Example 3 A spinning solution of 1275 g of dimethylformamide and 225 g of polyacrylonitrile (K value 103) 0.56 g thiourea 2.25 g paraformaldehyde 4.50 g oxalic acid is spun and the aftertreatment carried out in the same way as in the previous examples. The thread has the same properties as indicated in Example 2.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV16441A DE1085292B (en) | 1959-04-25 | 1959-04-25 | Process for the production of structures from polyacrylonitrile and / or its copolymers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV16441A DE1085292B (en) | 1959-04-25 | 1959-04-25 | Process for the production of structures from polyacrylonitrile and / or its copolymers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1085292B true DE1085292B (en) | 1960-07-14 |
Family
ID=7575663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEV16441A Pending DE1085292B (en) | 1959-04-25 | 1959-04-25 | Process for the production of structures from polyacrylonitrile and / or its copolymers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1085292B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1292310B (en) * | 1961-10-20 | 1969-04-10 | Monsanto Co | Process for the production of fibers and threads from acrylonitrile polymers |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR905039A (en) * | 1942-10-21 | 1945-11-22 | Ig Farbenindustrie Ag | Method for improving the properties of articles brought into the desired shape |
FR1032839A (en) * | 1951-02-19 | 1953-07-06 | Rhodiaceta | Method for modifying the solubility of polymers |
CH313961A (en) * | 1953-02-06 | 1956-05-31 | Halbig Paul Ing Dr | Process for the production of threads from a solution of polyacrylonitrile in nitric acid |
-
1959
- 1959-04-25 DE DEV16441A patent/DE1085292B/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR905039A (en) * | 1942-10-21 | 1945-11-22 | Ig Farbenindustrie Ag | Method for improving the properties of articles brought into the desired shape |
FR1032839A (en) * | 1951-02-19 | 1953-07-06 | Rhodiaceta | Method for modifying the solubility of polymers |
CH313961A (en) * | 1953-02-06 | 1956-05-31 | Halbig Paul Ing Dr | Process for the production of threads from a solution of polyacrylonitrile in nitric acid |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1292310B (en) * | 1961-10-20 | 1969-04-10 | Monsanto Co | Process for the production of fibers and threads from acrylonitrile polymers |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1085292B (en) | Process for the production of structures from polyacrylonitrile and / or its copolymers | |
DE2327277B2 (en) | SYNTHETIC POLYAMIDE THREAD WITH A STABILIZER AGAINST THE EFFECT OF UV RAYS AND HEAT | |
DE382086C (en) | Process for increasing the strength, in particular the wet strength, of rayon, staple fibers and of fabrics made from them | |
DE1004135B (en) | Process for making threads, fibers or fabrics made of native or regenerated cellulose crease resistant | |
DE969053C (en) | Process for the production of spinnable solutions from polyacrylonitrile | |
AT230841B (en) | Process for the manufacture of boil-proof and washable nonwovens resistant to chlorine-containing bleaching agents | |
DE1063572B (en) | Process to increase the usability and frizziness of cellulose hydrate fibers | |
DE2446751A1 (en) | METHOD FOR MANUFACTURING IMPROVED CELLULOSE ACETATE FIBERS | |
DE844954C (en) | Process for the production of swellable, artificial structures, such as threads, fibers or films, from acrylonitrile polymers | |
DE864435C (en) | Process for the production of filling materials consisting of regenerated cellulose | |
DE855146C (en) | Process for the production of structures such as fibers, threads and films from cellulose derivatives with high resistance to heat and solvents | |
DE765265C (en) | Process for the production of threads from aqueous solutions of polyvinyl alcohol | |
DE590326C (en) | Process for the production of vulcanized fiber | |
DE2333600A1 (en) | NON CATALYTIC CONTINUOUS PRESSING METHOD OF TREATMENT OF CELLULOSE MATERIAL USING FORMALDEHYDE VAPOR AND REHEATING | |
DE870542C (en) | Process for matting fully synthetic structures | |
DE751162C (en) | Process for the production of threads, films, ribbons or other artificially formed structures from protein materials | |
DE1494651C (en) | Process for the production of crimped polyvinyl alcohol fibers | |
DE686057C (en) | Process for the production of water-resistant synthetic fibers from proteins, in particular from casein | |
DE910163C (en) | Process for refining folded cellulose | |
DE1012025B (en) | Process for the production of artificial threads or films from viscose | |
DE1211353C2 (en) | Manufacture of acrylonitrile fibers | |
DE910107C (en) | Process for the production of artificial structures, such as threads, fibers, tapes or films, from cellulose or cellulose derivatives | |
AT154899B (en) | Process for the production of crimped synthetic fibers. | |
DE657742C (en) | Process for the production of synthetic fibers containing nitrogen and sulfur from cellulose xanthogenate solutions | |
DE886951C (en) | Process for the production of artificial structures from copolymers of vinyl chloride and vinyl acetate |