DE912865C - Process for the production of polyvinyl fluoride and copolymers - Google Patents

Process for the production of polyvinyl fluoride and copolymers

Info

Publication number
DE912865C
DE912865C DEF2874D DEF0002874D DE912865C DE 912865 C DE912865 C DE 912865C DE F2874 D DEF2874 D DE F2874D DE F0002874 D DEF0002874 D DE F0002874D DE 912865 C DE912865 C DE 912865C
Authority
DE
Germany
Prior art keywords
copolymers
production
polyvinyl fluoride
vinyl fluoride
fluoride
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
Application number
DEF2874D
Other languages
German (de)
Inventor
Dr Dr H C Otto Bayer
Dr Julius Soell
Dr Ludwig Teichmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEF2874D priority Critical patent/DE912865C/en
Application granted granted Critical
Publication of DE912865C publication Critical patent/DE912865C/en
Expired legal-status Critical Current

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
    • C08F14/20—Vinyl fluoride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
  • Graft Or Block Polymers (AREA)

Description

Verfahren zur Herstellung von Polyvinylfluorid und Mischpolymerisaten Es wurde gefunden, daß sich Vinylfluorid in wäßriger Emulsion als solches oder in Mischung mit anderen polymerisierbaren bzw. mischpolymerisierbaren Verbindungen zu höhermolekularen fluorhaltigen Stoffen polymerisieren läßt, wenn man es Drücken oberhalb Zoo atü und Temperaturen oberhalb 5o°, vorzugsweise zwischen 5o und 2oo° aussetzt. Die Polymerisation kann in Gegenwart von Emulgatoren und Polymerisationskatalysatoren, wie Benzoylsuperoxyd, Persulfat usw., durchgeführt werden.Process for the production of polyvinyl fluoride and copolymers It has been found that vinyl fluoride in aqueous emulsion as such or in Mixture with other polymerizable or copolymerizable compounds Can polymerize to higher molecular weight fluorine-containing substances, if you press it above Zoo atü and temperatures above 5o °, preferably between 5o and 2oo ° suspends. The polymerization can take place in the presence of emulsifiers and polymerization catalysts, such as benzoyl peroxide, persulfate, etc., can be carried out.

Es war nicht vorauszusehen, daß Vinylfluorid, das sich unter den üblichen Polymerisationsbedingungen nicht polymerisieren läßt, auf diese Weise in Hochpolymere übergeführt werden kann.It was not foreseeable that vinyl fluoride, which is among the usual Polymerization conditions do not let polymerize in this way in high polymers can be transferred.

Beispiel i 4009 Vinylfluorid werden in einem Druckgefäß in 3009 Wasser, welches io g Wasserstoffsuperoxyd und 2,5g Ammonpersulfat gelöst enthält, mit Hilfe von 15 g eines Emulgiermittels, wie z. B. Palmitinsulfosäure, emulgiert. Nach etwa 3ostündiger Behandlung bei ioo° C und einem Druck von 7oo atü werden 50 g eines Polymerisats erhalten, welches gemäß Analyse 37 °/o Fluor enthält. Beispiel 2 300 g Acrylsäureester und 5oog Vinylfluorid werden in einem Druckgefäß in 25o g Wasser, welches 2o g Ammonpersulfat, 12 g Wasserstoffsuperoxyd und 30 g Palmitinsulfosäure gelöst enthält, unter Druck emulgiert. Nach 36stündigem Erhitzen auf 8o bis go° und bei einem von Soo atü allmählich auf 3oo atü abfallenden Druck erhält man 430g eines Polymerisats, welches nach dem Auswaschen auf der Walze und Trocknen einen Fluorgehalt von 7,5 °ia aufweist. Beispiel 3 In einem Rollautoklav von 1,21 Inhalt werden 4o0 ccm Tetrahydrofuran + 20o ccm Wasser eingefüllt, dazu 2 g Na-Hyposulfit und 2o g Fettsäure aus der Paraffinoxydation als Emulgator; 22o g Vinylfluorid werden eingepreßt. Nach kurzem Lauf des Autoklavs werden noch 25g Kaliumpersulfat durch eine Druckschleuse eingeführt. Nach 48stündigem Lauf bei go bis ioo°C haben sich 35 g Polymerisat gebildet.Example i 4009 vinyl fluoride are dissolved in 3009 water in a pressure vessel, which contains 10 g of hydrogen peroxide and 2.5 g of ammonium persulfate, with the aid of 15 g of an emulsifying agent, such as. B. palmitin sulfonic acid, emulsified. After about 3 hours of treatment at 100 ° C. and a pressure of 700 atmospheres, 50 g of a polymer are obtained which, according to analysis, contains 37% fluorine. Example 2 300 g of acrylic acid ester and 50 g of vinyl fluoride are emulsified under pressure in a pressure vessel in 250 g of water which contains 20 g of ammonium persulfate, 12 g of hydrogen peroxide and 30 g of palmitic sulfonic acid in dissolved form. After 36 hours of heating to 80 to 20 ° and a pressure gradually falling from Soo to 300 atmospheres, 430 g of a polymer are obtained which, after washing on the roller and drying, has a fluorine content of 7.5 ° ia. EXAMPLE 3 40 cc of tetrahydrofuran + 20 cc of water are filled into a roller autoclave with a capacity of 1.21, plus 2 g of sodium hyposulfite and 20 g of fatty acid from paraffin oxidation as an emulsifier; 220 g of vinyl fluoride are pressed in. After the autoclave has run for a short time, 25 g of potassium persulfate are introduced through a pressure lock. After running for 48 hours at 0 to 100 ° C., 35 g of polymer had formed.

Claims (1)

PATENTA:`iSPRUCFI: Verfahren zur Herstellung von Polyvinylfluorid und Mischpolymerisaten, dadurch gekennzeichnet, daß Vinylfluorid gegebenenfalls in Mischung mit anderen polymerisierbaren Verbindungen bei Temperaturen oberhalb 5o° und Drücken oberhalb 200 atü in wäßriger Emulsion polymerisiert wird. Angezogene Druckschriften: Deutsche Patentschrift Nr. 677071.PATENTA: `iSPRUCFI: Process for the production of polyvinyl fluoride and copolymers, characterized in that vinyl fluoride optionally in a mixture with other polymerizable compounds at temperatures above 5o ° and pressures above 200 atmospheres are polymerized in an aqueous emulsion. Dressed Publications: German Patent No. 677071.
DEF2874D 1941-09-26 1941-09-26 Process for the production of polyvinyl fluoride and copolymers Expired DE912865C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF2874D DE912865C (en) 1941-09-26 1941-09-26 Process for the production of polyvinyl fluoride and copolymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF2874D DE912865C (en) 1941-09-26 1941-09-26 Process for the production of polyvinyl fluoride and copolymers

Publications (1)

Publication Number Publication Date
DE912865C true DE912865C (en) 1954-06-03

Family

ID=7083539

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF2874D Expired DE912865C (en) 1941-09-26 1941-09-26 Process for the production of polyvinyl fluoride and copolymers

Country Status (1)

Country Link
DE (1) DE912865C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE677071C (en) * 1934-10-06 1939-06-17 I G Farbenindustrie Akt Ges Process for the preparation of polymerization products

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE677071C (en) * 1934-10-06 1939-06-17 I G Farbenindustrie Akt Ges Process for the preparation of polymerization products

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