DE736296C - Process for the preparation of low-concentration solutions of colored iodine compounds of polyvinyl alcohol - Google Patents

Process for the preparation of low-concentration solutions of colored iodine compounds of polyvinyl alcohol

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Publication number
DE736296C
DE736296C DEI69063D DEI0069063D DE736296C DE 736296 C DE736296 C DE 736296C DE I69063 D DEI69063 D DE I69063D DE I0069063 D DEI0069063 D DE I0069063D DE 736296 C DE736296 C DE 736296C
Authority
DE
Germany
Prior art keywords
polyvinyl alcohol
low
iodine
preparation
concentration solutions
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
DEI69063D
Other languages
German (de)
Inventor
Dr Max Bockmuehl
Leonhard Middendorf
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI69063D priority Critical patent/DE736296C/en
Application granted granted Critical
Publication of DE736296C publication Critical patent/DE736296C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00Chemical modification by after-treatment
    • C08F8/12Hydrolysis

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Darstellung niedrig konzentrierter Lösungen von gefärbten Jodverbindungen des Polyvinplalkohols In dem Patent 73 i og i ist ein Verfahren zur Darstellung niedrig konzentrierter Lösungen von gefärbten Jod-Jodalkali-Verbindungen des Polyvinylalkohols beschrieben, das dadurch gekennzeichnet ist, daß man auf niedrig konzentrierte wässerige Lösungen von Polyvinylalkohol Jod-Jodalkali bis zur völligen Beendigung der Reaktion einwirken läßt oder höher konzentrierte Lösungen der genannten Komponenten mit Wasser verdünnt.Process for the preparation of low-concentration solutions of colored Iodine compounds of polyvinyl alcohol In the patent 73 i og i is a process for the representation of low-concentration solutions of colored iodine-iodine-alkali compounds of polyvinyl alcohol described, which is characterized in that one on low concentrated aqueous solutions of polyvinyl alcohol iodine-iodine alkali up to the complete Termination of the reaction allows it to act or more concentrated solutions of the above Components diluted with water.

Bei weiterer Bearbeitung des Gegenstandes dieser Erfindung wurde nun gefunden, daß nicht nur Jod-Jodalkali, sondern auch Jod allein gefärbte Adsorptionsverbindungen mit Polyvinylalkohol zu bilden vermag.Further processing the subject matter of this invention has now been made found that not only iodine-iodine alkali, but also iodine alone colored adsorption compounds capable of forming with polyvinyl alcohol.

Man kann bei der Herstellung der wässerigen Lösungen dieser Verbindungen beispielsweise so vorgehen, daß man das Jod in Form einer mit Wasser verdünnten alkoholischen Lösung auf eine Lösung von Polyvinylalkohol einwirken läßt. Die die Bildung der Adsorptionsverbindung anzeigende Grün- bis Blaufärbung tritt dann langsamer ein als bei An-";#endung von Jod in Form von Jod-Jodalkali. Vorteilhaft läßt sich das Verfahren so ausführen, daß man das Jod in statu nascendi auf den Polyvinylalkohol einwirken läßt, wie es beispielsweise der Fall ist, wenn man Kaliumjodid und Kaliumjodat im molaren Verhältnis 5 : i in Wasser löst und diese Lösung mit einer Lösung von Polyvinylalkohol, der vorher .eine äquivalente :Menge Salzsäure zuge- setzt wurde, vereinigt. In diesem Falle tritt die die Bindung des Jods an :den Polyvinylalkohol anzeigende Farbreaktion unmittelbar ein. Beispiele i. 5 %ige alkoholische Jodlösung ... i o g, Glycerin . . . . . . . . . . . . . . . . . . . . . i oo g, destilliertes Wasser . . . . . . . . . . . . . 5oo g, 5 ojöxge wässerige Polyvinylalkohol- lösung . . . . . . . . . . . . . . . . . . . . . 390 9. Zu der alkoholischen Jodlösung wird zuerst das Glycerin, dann das Wasser gefügt. Die Mischung wird mit der Polyvinylalkohollösung vereinigt. Die erhaltene braun gefärbte Lösung färbt sich allmählich grün. 'Das Grün geht weiterhin in Tiefdunkelblau über. 2. Kaliumjodid ............... o,83 g, Kaliumjodat ............... 0,2149, Glycerin ..................loo g, destilliertes Wasser . . . . . . . . .494 g. I - n-Salzsäure . . . . . . . . . . . . . . 6 ccm. 4ojoige wässerige Polyvinyl- alkohollösung ...........398,956g. Kaliumjodid und Kaliumjodat werden in der Mischung aus Glycerin und Wasser gelöst. Die Lösung wird nach und nach unter Rühren zu der Polyvinylalkohollösung, in der vorher die Salzsäure verteilt wurde, gegeben. Es entsteht ein anfänglich dunkelgrün, nach kurzer Zeit tiefdunkelblau gefärbtes Präparat.When preparing the aqueous solutions of these compounds, one can proceed, for example, by allowing the iodine in the form of an alcoholic solution diluted with water to act on a solution of polyvinyl alcohol. The green to blue coloration, which indicates the formation of the adsorption compound, then occurs more slowly than when iodine is added in the form of iodine-iodine-alkali can, as is the case for example when potassium iodide and potassium iodate in a molar ratio of 5: i-dissolved in water and this solution with a solution of polyvinyl alcohol previously .a equivalent: sets conces- amount of hydrochloric acid were combined in this case. the color reaction indicating the binding of the iodine occurs immediately: the polyvinyl alcohol i. 5% alcoholic iodine solution ... iog, Glycerin. . . . . . . . . . . . . . . . . . . . . i oo g, distilled water . . . . . . . . . . . . . 5oo g, 5 ojöxge aqueous polyvinyl alcohol solution . . . . . . . . . . . . . . . . . . . . . 390 9. To the alcoholic iodine solution, first the glycerine is added, then the water. The mixture is combined with the polyvinyl alcohol solution. The brown colored solution obtained gradually turns green. 'The green continues to turn into deep dark blue. 2. Potassium iodide ............... o, 83 g, Potassium iodate ............... 0.2149, Glycerine .................. loo g, distilled water . . . . . . . . .494 g. I. - n-hydrochloric acid. . . . . . . . . . . . . . 6 cc. 4ojoige aqueous polyvinyl alcohol solution ........... 398.956g. Potassium iodide and potassium iodate are dissolved in the mixture of glycerin and water. The solution is gradually added, with stirring, to the polyvinyl alcohol solution in which the hydrochloric acid was previously distributed. The result is an initially dark green, after a short time deep dark blue colored preparation.

Die erhaltenen Verfahrensprodukte können zur Bekämpfung von Parasiten Verwendung finden.The process products obtained can be used to combat parasites Find use.

Claims (1)

PATENTANSPgUCH: `'eitere Ausbildung des Verfahrens nach Patent 731 o91, dadurch gekennzeichnet, daß man auf niedrig konzentrierte Lösungen von Palyvinylall,-ohol Jod einwirken läßt.PATENT APPLICATION: `` 'Further development of the process according to patent 731 o91, characterized in that low-concentration solutions of Palyvinylall, alcohol Lets iodine act.
DEI69063D 1941-03-04 1941-03-04 Process for the preparation of low-concentration solutions of colored iodine compounds of polyvinyl alcohol Expired DE736296C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI69063D DE736296C (en) 1941-03-04 1941-03-04 Process for the preparation of low-concentration solutions of colored iodine compounds of polyvinyl alcohol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI69063D DE736296C (en) 1941-03-04 1941-03-04 Process for the preparation of low-concentration solutions of colored iodine compounds of polyvinyl alcohol

Publications (1)

Publication Number Publication Date
DE736296C true DE736296C (en) 1943-06-11

Family

ID=7196960

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI69063D Expired DE736296C (en) 1941-03-04 1941-03-04 Process for the preparation of low-concentration solutions of colored iodine compounds of polyvinyl alcohol

Country Status (1)

Country Link
DE (1) DE736296C (en)

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