DE894910C - Process for the production of conversion products of trifluoroethene - Google Patents
Process for the production of conversion products of trifluoroetheneInfo
- Publication number
- DE894910C DE894910C DEF2536A DEF0002536A DE894910C DE 894910 C DE894910 C DE 894910C DE F2536 A DEF2536 A DE F2536A DE F0002536 A DEF0002536 A DE F0002536A DE 894910 C DE894910 C DE 894910C
- Authority
- DE
- Germany
- Prior art keywords
- trifluoroethene
- conversion products
- production
- hours
- irradiation
- 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
- C08F14/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F14/18—Monomers containing fluorine
- C08F14/185—Monomers containing fluorine not covered by the groups C08F14/20 - C08F14/28
Description
Verfahren zur Herstellung von Umwandlungsprodukten des Trifluoräthens Halogenierte Vinylverbindungen, auch Trifluoräthen, lassen,sich in Emulsionen unter Zugabe eines Peroxyds als Aktivator polymerisieren.Process for the preparation of conversion products of trifluoroethene Halogenated vinyl compounds, including trifluoroethene, can be found in emulsions Polymerize by adding a peroxide as an activator.
Organische Verbindungen, die neben Fluor ein oder mehrere Halogenatome oder andere Substituenten außer Wasserstoff enthalten, hat man durch Einwirkung von Licht, insbesondere der Wellenlängen von :22oo bis 6ooo' A, polymerisiert. Bei diesen Verbindungen ist vorzugsweise die Doppelbindung dadurch aktiviert, daß eines der bei-den Kohlenstoff atome durch verschiedene Halogenatome oder andere Substituenten außer Wasserstoff gegenüber -den anderen besonders beschwert oder asymmetrisch ist.Organic compounds which in addition to fluorine contain one or more halogen atoms or other substituents other than hydrogen, one has by the action of light, in particular the wavelengths of: 22oo polymerized to 6ooo 'A. In these compounds, the double bond is preferably activated in that one of the two carbon atoms is particularly weighted or asymmetrical compared to the others due to various halogen atoms or other substituents besides hydrogen.
Gegenstand der Erfindung ist ein Verfahren zur Herstellung von Umwandlungsprodukten des Trifl-uoräthens (F, C = C 11 F), das darin besteht, daß man Trifltioräthen,d#---r Einwirkung von Licht, voT-zugsweise der Wellenlängen von :2t2oo bis 6ooo' A unterwirft. Das Trifluoräthen polymerisiert überraschenderweise bei Bestrahlung sehr schnell und vollständig, wobei die Eigenschaften des Polymerisates je nach der Bestrahlungsdauer variieren. Bei kurzzeitiger Bestrahlung, etwa 1/2 bis 5 Stunden, erhält man feste, aber plastische, leicht verformbare Massen. Bei länger dauernder Bestrahlung bis zu 40 Stunden gehen diese Massen allmählich in einen kristallinen, aber unter Druck verformbaren Zustand über.The invention relates to a process for the preparation of conversion products of trifluorethylene (F, C = C 11 F), which consists in that triflietene, the action of light, preferably of wavelengths from: 2t2oo to 6ooo 'A subjects. Surprisingly, the trifluoroethene polymerizes very quickly and completely on irradiation, the properties of the polymer varying depending on the duration of the irradiation. Short-term irradiation, about 1/2 to 5 hours, gives solid, but plastic, easily deformable materials. With longer exposure of up to 40 hours, these masses gradually change into a crystalline, but deformable state under pressure.
Belichtet man in Emulsion unter Zugabe eines Peroxydes als Aktivator, so erfolgt ebenfalls Polymerisation. Die weißen undurchsichtigen Polyrilerisate sind gut verformbar, bei erhöhlter Temperatur werden sie glasartig,durchscheinend, oberhalb 276' schmelzen sie, bis 300' ist keine Zersetzung zu beobachten. In,den gebräuchlichen organischen Lösungsmitteln sind sie unlöslich ' von Mineralsäuren werden sie unter den in der Technik üblichen Bedingungen nicht angegriffen. Sie stellen wertvolle Ausgangsprodukte für die Herstellung von Kunststoffen dar. Beispiel i Verflüssigtes Trifluoräthen wird der Sonnenbestrahlung oder der Bestrahlung durch eine UV-Lichtquelle ausgesetzt. Bereits nach wenigen Minuten beginnt die Polymerisation. je nach der Art der Bestrahlungsquelle ist sie nach i bis 4o Stunden beendet.If it is exposed in emulsion with the addition of a peroxide as an activator, polymerization also takes place. The white, opaque polyacrylates are easily deformable; at elevated temperatures they become glass-like, translucent, above 276 'they melt, up to 300' no decomposition can be observed. In "the common organic solvents they are insoluble " they are not attacked by mineral acids under the conditions customary in technology. They represent valuable starting products for the production of plastics. Example i Liquefied trifluoroethene is exposed to solar radiation or to radiation from a UV light source. Polymerization begins after just a few minutes. Depending on the type of irradiation source, it is over after 1 to 40 hours.
B e i s p ie l# 2, Nach Beispiel i wird verflüssigtes Trifluoräthen 6 Stunden lang dem Licht einer UV-Lampe ausgesetzt. Die Polymerisation ist dann vollständig. Man erhält ein festes, aber plastisches Polymerisat, das gut verformbar ist.B ice p y l # 2 of Example I liquefied Trifluoräthen is exposed for 6 hours to light from a UV lamp. The polymerization is then complete. A solid but plastic polymer is obtained which is easily deformable.
Bestrahlt man statt 6 Stunden etwa 4o Stunden, so ist das Polymerisat Kristallin, aber unter Druck noch verformbar. Im ersten Falle erfolgt der Umschlag in die glasartige Modifikation bei 148 bis 153', im zweiten Falle bei 170'.If irradiation is carried out for about 40 hours instead of 6 hours, the polymer is crystalline, but can still be deformed under pressure. In the first case the change to the glass-like modification takes place at 148 to 153 ', in the second case at 170'.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF2536A DE894910C (en) | 1950-08-26 | 1950-08-27 | Process for the production of conversion products of trifluoroethene |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE698215X | 1950-08-26 | ||
| DEF2536A DE894910C (en) | 1950-08-26 | 1950-08-27 | Process for the production of conversion products of trifluoroethene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE894910C true DE894910C (en) | 1953-10-29 |
Family
ID=25946470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEF2536A Expired DE894910C (en) | 1950-08-26 | 1950-08-27 | Process for the production of conversion products of trifluoroethene |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE894910C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1145796B (en) * | 1957-11-08 | 1963-03-21 | Minnesota Mining & Mfg | Process for the preparation of dispersions of polymers or copolymers of at least three fluorine atoms and, optionally, also of an ethylene containing a chlorine atom |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2456255A (en) * | 1944-09-19 | 1948-12-14 | Du Pont | Polymers of trifluoroethylene and process for obtaining them |
-
1950
- 1950-08-27 DE DEF2536A patent/DE894910C/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2456255A (en) * | 1944-09-19 | 1948-12-14 | Du Pont | Polymers of trifluoroethylene and process for obtaining them |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1145796B (en) * | 1957-11-08 | 1963-03-21 | Minnesota Mining & Mfg | Process for the preparation of dispersions of polymers or copolymers of at least three fluorine atoms and, optionally, also of an ethylene containing a chlorine atom |
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