DE524220C - Process for the polymerization of styrene, its derivatives and homologues - Google Patents
Process for the polymerization of styrene, its derivatives and homologuesInfo
- Publication number
- DE524220C DE524220C DE1930524220D DE524220DD DE524220C DE 524220 C DE524220 C DE 524220C DE 1930524220 D DE1930524220 D DE 1930524220D DE 524220D D DE524220D D DE 524220DD DE 524220 C DE524220 C DE 524220C
- Authority
- DE
- Germany
- Prior art keywords
- homologues
- derivatives
- polymerization
- hydrogen fluoride
- styrene
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
Verfahren zur Polymerisation von Styrol, seinen Derivaten und Homologen Es ist bekannt, daß man St_vrol, seine Derivate und Homologen unter geeigneten Bedingungen polymerisieren kann. Dabei ist meistens die Anwendung höherer Temperaturen erforderlich.Process for the polymerization of styrene, its derivatives and homologues It is known that St_vrol, its derivatives and homologues can be used under suitable conditions can polymerize. In most cases, it is necessary to use higher temperatures.
Es wurde nun gefunden, daß man Stvrol, seine Derivate und Homologen in sehr vorteilhafter Weise, insbesondere schon bei gewöhnlicher oder noch tiefer liegender Temperatur, polymerisieren kann, wenn man die Polvmerisation in Gegenwart von Fluorwasserstoff erfolgen läßt. Durch Veränderung der Menge des angewandten Fluorwasserstoffs, seiner Konzentration, der Einwirkungsclauer und der Behandlungstemperatur gelangt man zu verschieden weit polymerisierten Produkten. Die Polvmerisation kann auch bei Gegenwart von Lösungsmitteln, wie Benzol, Tetrachlorkohlenstoff, Alkohol usw., vorgenommen werden. Man kann auch den Fluorwasserstoff durch geeignete Verdünnungsmittel, z. B. Alkohol oder Wasser, verdünnen. Die Ausführung des Verfahrens ist höchst einfach; der Fluorwasserstoff läßt sich weitgeliendst zurückgewinnen. Die zurückbleibenden Polvmerisationsprodukte sind in einfacher Weise zu reinigen und stellen technisch wertvolle Produkte dar, die z. B. für Kunsthorn Verwendung finden können. Die .-Ausbeute ist quantitativ.It has now been found that Stvrol, its derivatives and homologues in a very advantageous way, especially already with ordinary or even deeper temperature, can polymerize, if you do the polymerization in the presence can be done by hydrogen fluoride. By changing the amount of applied Hydrogen fluoride, its concentration, the exposure and the treatment temperature one arrives at products that have been polymerized to different extents. The polymerisation can even in the presence of solvents such as benzene, carbon tetrachloride, alcohol etc., can be made. You can also use the hydrogen fluoride by suitable diluents, z. B. alcohol or water, dilute. The procedure is extremely simple to carry out; the hydrogen fluoride can be recovered as far as possible. The ones left behind Polymerization products are easy to clean and provide technical valuable products that z. B. can be used for artificial horn. The. Yield is quantitative.
Beispiel i Man löst 2o Gewichtsteile Styrol in 5o Gewichtsteilen Benzol und destilliert in diese Lösung bei etwa io' io Gewichtsteile Fluorwasserstoff hinein. Man läßt einige Zeit stehen und vertreibt den Fluorwasserstoff und das Benzol durch Erwärmen. Es hinterbleibt eine weiße, bei Zimmertemperatur plastische Masse, aus der die letzten Reste von Fluorwasserstoff durch Waschen mit warmem Wasser entfernt werden können. Ähnliche plastische Massen erhält man, indem man Stvrol in hochkonzentrierte wässerige F luorwasserstoffsäure einträgt. Beispiel e Trägt man 2o Gewichtsteile' Stvrol in 2o Gewichtsteile Fluorwasserstoff unter Kühlung ein oder kondensiert man gleiche Mengen Fluorwasserstoff auf Stvrol, so fällt sofort ein Polymerisationsprodukt aus, das nach längerem Stehen zu einer harten, bei Zimmertemperatur pulver isierbaren Masse erstarrt, die bei höherer Temperatur plastisch ist. Die Entfernung des Fluorwasserstoffs geschieht, wie unter Beispiel i angegeben.EXAMPLE i 20 parts by weight of styrene are dissolved in 50 parts by weight of benzene and distilled into this solution at about 10-10 parts by weight of hydrogen fluoride. It is allowed to stand for some time and the hydrogen fluoride and benzene are driven off Heat. What remains is a white, plastic mass at room temperature which removes the last remains of hydrogen fluoride by washing with warm water can be. Similar plastic masses are obtained by converting Stvrol into highly concentrated enters aqueous hydrofluoric acid. Example e If one carries 2o parts by weight ' Stvrol in 20 parts by weight of hydrogen fluoride with cooling or condensation equal amounts of hydrogen fluoride on Stvrol, a polymerisation product immediately falls which, after standing for a long time, turns into a hard one that can be powdered at room temperature The mass solidifies, which is plastic at a higher temperature. The removal of the hydrogen fluoride happens as indicated under example i.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE524220T | 1930-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE524220C true DE524220C (en) | 1931-05-04 |
Family
ID=6552211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1930524220D Expired DE524220C (en) | 1930-08-02 | 1930-08-02 | Process for the polymerization of styrene, its derivatives and homologues |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE524220C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2460973A (en) * | 1946-06-21 | 1949-02-08 | Allied Chem & Dye Corp | Low-temperature, hydrogen fluoride catalyzed polymerization of conjugated diolefins |
| DE1015600B (en) * | 1950-01-03 | 1957-09-12 | Dow Chemical Co | Process for the production of copolymers from styrene and ª ‡ -methylstyrene with increased dimensional stability by means of bulk polymerisation |
| DE974268C (en) * | 1952-01-12 | 1960-11-10 | Monsanto Chemicals | Process for the bulk polymerization of styrene |
-
1930
- 1930-08-02 DE DE1930524220D patent/DE524220C/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2460973A (en) * | 1946-06-21 | 1949-02-08 | Allied Chem & Dye Corp | Low-temperature, hydrogen fluoride catalyzed polymerization of conjugated diolefins |
| DE1015600B (en) * | 1950-01-03 | 1957-09-12 | Dow Chemical Co | Process for the production of copolymers from styrene and ª ‡ -methylstyrene with increased dimensional stability by means of bulk polymerisation |
| DE974268C (en) * | 1952-01-12 | 1960-11-10 | Monsanto Chemicals | Process for the bulk polymerization of styrene |
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