DE1225390B - Process for the production of polyacrylonitrile compositions - Google Patents
Process for the production of polyacrylonitrile compositionsInfo
- Publication number
- DE1225390B DE1225390B DEO8273A DEO0008273A DE1225390B DE 1225390 B DE1225390 B DE 1225390B DE O8273 A DEO8273 A DE O8273A DE O0008273 A DEO0008273 A DE O0008273A DE 1225390 B DE1225390 B DE 1225390B
- Authority
- DE
- Germany
- Prior art keywords
- acrylonitrile
- acid
- hours
- test tube
- hydrogen peroxide
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
- C08F265/08—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of nitriles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/36—Polymerisation in solid state
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F20/00—Homopolymers and 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 a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/42—Nitriles
- C08F20/44—Acrylonitrile
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polymerization Catalysts (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
DEUTSCHESGERMAN
PATENTAMTPATENT OFFICE
AUSLEGESCHRIFTEDITORIAL
Int. CL:Int. CL:
C08fC08f
Deutsche Kl.: 39 c - 25/01 German class: 39 c - 25/01
Nummer: 1225 390Number: 1225 390
Aktenzeichen: O 8273 IV d/39 c File number: O 8273 IV d / 39 c
Anmeldetag: 20. September 1961 Filing date: September 20, 1961
Auslegetag: 22. September 1966 Opening day: September 22, 1966
Frühere Versuche über die Massepolymerisation von Acrylnitril, über die in der Literatur berichtet wurde, benutzten verschiedene Beschleuniger, beispielsweise Benzolsulfinsäure und Benzoylperoxyd, und führten zur Bildung von pulverförmigen, flockenartigen oder agglomerierten Niederschlägen von Polyacrylnitril. Es wurde angenommen, daß diese die Endprodukte der Polymerisation darstellen, und das Verfahren wurde nach ihrer Bildung als beendet angesehen. Die so erhaltenen Produkte sind denen ähnlich, die durch Polymerisation von Acrylnitril in einem flüssigen Medium, z.B. in Wasser, erhalten werden. Weil bei der Blockpolymerisation von Acrylnitril die Gefahr des sogenannten »Durchgehens« besteht, d. h. einer unkontrollierten, sehr schnell verlaufenden und manchmal explosiven Reaktion, und gleichwertige Produkte durch Polymerisation in flüssigem Medium erhalten werden, so wird das letztere Verfahren meist in der Industrie verwendet.Previous attempts on the bulk polymerization of acrylonitrile reported in the literature used different accelerators, for example benzenesulfinic acid and benzoyl peroxide, and led to the formation of powdery, flaky or agglomerated precipitates of Polyacrylonitrile. It was assumed that these represent the end products of the polymerization, and that Proceedings were considered terminated after their formation. The products thus obtained are those similar, obtained by polymerizing acrylonitrile in a liquid medium, e.g. in water will. Because the block polymerization of acrylonitrile involves the risk of what is known as "runaway" exists, d. H. an uncontrolled, very rapid and sometimes explosive reaction, and equivalent products are obtained by polymerization in a liquid medium, so will the latter Process mostly used in industry.
Die bekannten Polyacrylnitrilprodukte fallen in Form eines weißen oder gelblichen Pulvers an. Sie können durch Spinn- oder andere Naßverfahren zu Fasern oder Filmen verarbeitet werden, jedoch lassen sich diese Pulver nicht zu dreidimensionalen Körpern, geschweige zu farblosen, durchsichtigen Körpern verpressen, weil sie bei der für die Verformung benötigten hohen Temperatur mindestens teilweise zersetzt werden.The known polyacrylonitrile products are obtained in the form of a white or yellowish powder. she can be made into fibers or films by spinning or other wet processes, but leave them alone These powders do not turn into three-dimensional bodies, let alone colorless, transparent bodies compress because they are at least partially at the high temperature required for the deformation be decomposed.
Es wurde nun ein Verfahren zur Herstellung von Pölyacrylnitrilrnassen durch Massepolymerisation von Gemischen aus pulverförmigem, flockenartigem oder agglomeriertem Polyacrylnitril und monomerem Acrylnitril, gegebenenfalls zusammen mit kleinen Mengen eines oder mehrerer anderer Monomerer, die mit Acrylnitril ein Mischpolymerisat bilden können, bei Temperaturen nicht über 60° C in Gegenwart von organischen Sulfinsäuren und Peroxyden gefunden, das dadurch gekennzeichnet ist, daß als organische Sulfinsäure p-Toluolsulnnsäure und als Peroxyd Wasserstoffperoxyd eingesetzt werden.There has now been a process for the preparation of polyacrylonitrile compositions by bulk polymerization of Mixtures of powdery, flaky or agglomerated polyacrylonitrile and monomeric Acrylonitrile, optionally together with small amounts of one or more other monomers, the can form a copolymer with acrylonitrile at temperatures not exceeding 60 ° C in the presence of organic sulfinic acids and peroxides found, which is characterized in that as organic Sulfinic acid p-toluenesulinic acid and as peroxide Hydrogen peroxide can be used.
Durch das erfindungsgemäße Verfahren ist die Herstellung von harten, festen, farblosen, durchsichtigen Produkten, die auch für optische Verwendungen brauchbar sind, möglich. Derartige Produkte konnten durch die Polymerisation von Acrylnitril bisher nicht hergestellt werden.The inventive method is the Manufacture of hard, solid, colorless, see-through Products that can also be used for optical applications are possible. Such products could have not yet been produced by the polymerization of acrylonitrile.
Die erhaltenen Produkte haben einen hohen Erweichungspunkt und können maschinell bearbeitet werden.The products obtained have a high softening point and can be machined will.
Die Konzentration der speziellen Beschleuniger, nämlich p-Toluolsulfinsäure und Wasserstoffperoxyd, und die Reaktionstemperatur werden so ge-Verfahren zur Herstellung von Polyacrylnitrilmassen The concentration of the special accelerators, namely p-toluenesulfinic acid and hydrogen peroxide, and the reaction temperature are so ge Process for the preparation of polyacrylonitrile compositions
Anmelder:Applicant:
Avraham Oplatka,Avraham Oplatka,
Rechow Palmach,Rechow Palmach,
Nehemia Shavit,Nehemiah Shavit,
Rechow Rupin,Rechow Rupin,
Mordekhai Königsbuch,Mordekhai King Book,
Shikun Hapoel Hamizrachi (Israel)Shikun Hapoel Hamizrachi (Israel)
Vertreter:Representative:
Dr.-Ing. F. Wuesthoff, Dipl.-Ing. G. Puls
und Dr. E. Frhr. v. Pechmann, Patentanwälte,
München 9, Schweigerstr. 2Dr.-Ing. F. Wuesthoff, Dipl.-Ing. G. Pulse
and Dr. E. Frhr. v. Pechmann, patent attorneys,
Munich 9, Schweigerstr. 2
Als Erfinder benannt:Named as inventor:
Avraham Oplatka,Avraham Oplatka,
Rechow Palmach,Rechow Palmach,
Nehemia Shavit,Nehemiah Shavit,
Rechow Rupin,Rechow Rupin,
Mordekhai Königsbuch,Mordekhai King Book,
Shikun Hapoel Hamizrachi (Israel)Shikun Hapoel Hamizrachi (Israel)
Beanspruchte Priorität:Claimed priority:
Israel vom 20. September 1960 (14410)Israel September 20, 1960 (14410)
wählt, daß ein »Durchgehen« der Reaktion vermieden wird. Diese Bedingungen sind von Fall zu Fall je nach der Art des Ausgangsmaterials und der Größe des zu erzeugenden Blocks festzulegen.chooses to avoid a "runaway" reaction. These conditions are case by case to be determined depending on the type of raw material and the size of the block to be produced.
Es wird im allgemeinen vorgezogen, bei der Herstellung der gewünschten Produkte von einem Gemisch aus monomerem Acrylnitril mit p-Toluolsulfinsäure und Wasserstoffperoxyd auszugehen, in dem durch Stehenlassen ein pulverförmiger oder flockenartiger Niederschlag gebildet worden ist, der dann weiterhin in Berührung mit dem noch vorhandenen und nötigenfalls mit etwas neu zugefügtem Monomerem gelassen wird, bis sich der farblose, durchsichtige Block gebildet hat. Jedoch ist es auch möglich, von einem vorher gebildeten, pulverförmigen oder agglomerierten Polymerisat auszugehen und dieses mit dem Monomerem und den speziellen Beschleunigern zu vermischen.It is generally preferred in preparing the desired products from a mixture from monomeric acrylonitrile with p-toluenesulfinic acid and to run out of hydrogen peroxide, in which a powdery or flake-like one by letting it stand Precipitation has been formed, which then continues in contact with what is still present and if necessary left with some newly added monomer until the colorless, transparent one Block has formed. However, it is also possible from a previously formed, powdery one or starting from agglomerated polymer and this with the monomer and the special accelerators to mix.
Beim Verfahren der Erfindung bedeutet der Ausdruck »Polyacrylnitril« sowohl Polymere aus reinemIn the process of the invention, the term "polyacrylonitrile" means both polymers of pure
609 667/421609 667/421
Claims (1)
durch die folgenden Beispiele veranschaulicht. 40 Beispiel 4The method of the invention is opposed to this
illustrated by the following examples. 40 Example 4
wurde die obere Hälfte der Masse entfernt, der Block Patentansprüche:
aus dem Reagenzglas entfernt. Seine Lichtabsorption :
wurde in einem UNICAM-Spektrophotometer ge- 1. Verfahren zur Herstellung von-P.olyacrylmessen. Aus der Absorptionsformel . ■ -, nitrilmassen durch Massepolymerisation von Ge- l = l e-u . 55 mischen aus pulverförmigem, flockenartigem "oder 0 ' ■ . agglomeriertem Polyacrylnitril und .monomeremExample 1 A solution of VOQ 30 ml of acrylonitrile, 300 mg of p-To, -3.0 ml of acrylonitrile, in which 15 mg of p-toluenesulfinoluenesulfinic acid and 8 drops (about 140 mg) of 30% acid and 15 mg of p -Toluenesulfonic acid were dissolved, hydrogen peroxide was placed in an Erlenmeyer flask in a test tube with a volume of 25 ml and a volume of 125 ml, then stick was given. Then a drop, ie about 18 mg, c, substance was passed through the reaction mixture and closed 30% hydrogen peroxide was added, nitrogen borrowed the flask with a rubber stopper was passed through the solution and the test tube closed. It was then closed with a rubber stopper while standing at about 23 ° C. The reagent was left until only a small layer of the monoglass was seen for so long at room temperature, about 50 kidneys. The flask was then placed in a 23 ° C until only about 1 mm mono water bath at 4 ° C remained. The temperature was slowly increased over the white polymeric precipitate and optionally remained for 5 hours. Then it was held in a den in the range of 15 to 18 ° C for 15 to 20 hours. Thereafter, the temperature was brought back to 22 ° C and set at 22 ° C in a water bath of running tap water. At the bottom formed the flask left to stand in the bath overnight. On itself a block of transparent, colorless, hard. The following day had a clear, tempted polymer. Then the test tube was formed from a colorless mass, at the edge of which "something was taken out of the water bath, and after 6 hours there was white polymer. The product was essentially similar to that obtained in Example 1. Half of the total Mass off. At this stage 60. !
the upper half of the mass was removed, the block claims:
removed from the test tube. Its light absorption:
was measured in a UNICAM spectrophotometer. 1. Method for the production of polyacrylic gauges. From the absorption formula. ■ -, nitrile compounds through bulk polymerization of gel = l e -u . 5 5 mix of powdery, flake-like "or 0 ' ■. Agglomerated polyacrylonitrile and .monomer
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL1441060 | 1960-09-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1225390B true DE1225390B (en) | 1966-09-22 |
Family
ID=11043170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEO8273A Pending DE1225390B (en) | 1960-09-20 | 1961-09-20 | Process for the production of polyacrylonitrile compositions |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1225390B (en) |
FR (1) | FR1398711A (en) |
GB (1) | GB964533A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0637595A1 (en) * | 1993-02-18 | 1995-02-08 | Nippon Shokubai Co., Ltd. | Process for producing polymer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3412177A (en) * | 1966-02-28 | 1968-11-19 | Standard Oil Co | Interpolymerization of acrylonitrile monomer and polymer at an elevated pressure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE700176C (en) * | 1937-03-23 | 1940-12-14 | Roehm & Haas G M B H | Manufacture of plastics of high hardness and strength |
DE861156C (en) * | 1944-09-09 | 1952-12-29 | Hoechst Ag | Process for the production of polymers or copolymers of unsaturated compounds |
DE919668C (en) * | 1942-07-21 | 1954-11-02 | Hoechst Ag | Process for accelerating the polymerization of unsaturated compounds in bulk and in non-aqueous solution |
DE975072C (en) * | 1941-07-30 | 1961-08-03 | Degussa | Process for the rapid polymerization of mixtures of monomeric and polymeric vinyl compounds |
-
1961
- 1961-08-29 GB GB31103/61A patent/GB964533A/en not_active Expired
- 1961-09-14 FR FR873240A patent/FR1398711A/en not_active Expired
- 1961-09-20 DE DEO8273A patent/DE1225390B/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE700176C (en) * | 1937-03-23 | 1940-12-14 | Roehm & Haas G M B H | Manufacture of plastics of high hardness and strength |
DE975072C (en) * | 1941-07-30 | 1961-08-03 | Degussa | Process for the rapid polymerization of mixtures of monomeric and polymeric vinyl compounds |
DE919668C (en) * | 1942-07-21 | 1954-11-02 | Hoechst Ag | Process for accelerating the polymerization of unsaturated compounds in bulk and in non-aqueous solution |
DE861156C (en) * | 1944-09-09 | 1952-12-29 | Hoechst Ag | Process for the production of polymers or copolymers of unsaturated compounds |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0637595A1 (en) * | 1993-02-18 | 1995-02-08 | Nippon Shokubai Co., Ltd. | Process for producing polymer |
EP0637595A4 (en) * | 1993-02-18 | 1995-08-02 | Nippon Catalytic Chem Ind | Process for producing polymer. |
Also Published As
Publication number | Publication date |
---|---|
FR1398711A (en) | 1965-05-14 |
GB964533A (en) | 1964-07-22 |
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