DE1619050A1 - Process for the production of heat-coagulating impregnation mixtures - Google Patents

Process for the production of heat-coagulating impregnation mixtures

Info

Publication number
DE1619050A1
DE1619050A1 DE19671619050 DE1619050A DE1619050A1 DE 1619050 A1 DE1619050 A1 DE 1619050A1 DE 19671619050 DE19671619050 DE 19671619050 DE 1619050 A DE1619050 A DE 1619050A DE 1619050 A1 DE1619050 A1 DE 1619050A1
Authority
DE
Germany
Prior art keywords
heat
production
impregnation
coagulating
product
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
Application number
DE19671619050
Other languages
German (de)
Inventor
Roland Gammel
Dr Robert Schabert
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of DE1619050A1 publication Critical patent/DE1619050A1/en
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof

Description

Verfahren zur Herstellung wärmekoagulierender IMRräßniermise 1910n Beim Imprägnieren von Faservliesen mit wässrigen Bindemitteldispersionen kann während des Trockenprozesses, namentlich bei schweren Vliesstoffqualitäten, eine Migra-tion des-Bindemittels in Richtung Wär-Eiiazufuhr stattfinden.Process for the production of heat-coagulating IMRräßniermise 1910n When impregnating fiber webs with aqueous binder dispersions, during of the drying process, especially with heavy nonwovens, a migration of the binder take place in the direction of heat supply.

Durch diese Migrat-ion tritt eine Verarmung des Bindemittels, entweder an einer Seite des Vliesstoffes ein, oder bei beidseitigen Trocknen in der Mitte des Vliesstoffes.Through this migrat-ion a depletion of the binding agent occurs, either on one side of the non-woven fabric, or in the middle if drying on both sides of the nonwoven fabric.

Diese Migrationserscheinung kann auf die Weise behoben werden, daß man den Latiaes wärmekoagulierende Zusätze beigibt, wie z.B. Polyvinyl-Methyläther (Lutonal M 40). Dieser Äther hat die Eigenschaft, bei höherer Temperatur in Wasser unlöslich zu werden, er fällt aus und reißt die dispergierten Kunststoffpartikelchen aus der Imprägniermischung mit sich. Die Sensibilizierungstemperatur läßt sich-jedoch mit Lutonal nicht steuern. Es wurde nun gefundbn, daß nach folgendem Verfahren besonders sicher (in der Temperaturführung) gearbeitet werden kann: Die wässrigen Imprägniermischungen sind normalerweise anionenaktiv eingestellt. Sie koagulieren sofort bei Zusatz eines kationaktiven Produktes. Setzt man jedoch der anionenaktiven Dispersion als Stabilisator ein nicht ionogenes Produkt hinzu, so kann gleichzeitig ein kationaktives Produkt zugegeben werden. Es gibt eine ganze Reihe nicht ionogener Produkte, die bei verschiedenen Temperaturen ihre Wirksamkeit verlieren. Bei Erreichen dieser Temperaturschwelle wirkt das kationaktive Produkt auf die anionaktive Imprägniermischung fällend. IGO Tl. fest nicht ionogenes Netzmittel (Produkt LA 140) fest kationaktives Netzmittel (Silastan DCI) le5 fest Aluminiumsulfat 1 fest werden mit Wasser auf einen Festgehalt von 22 rio' eingestellt. (Zu beachten ist, daß das kationsaktive Produkt als letztes der Mischung beigefügt wird).This migration phenomenon can be remedied by adding heat-coagulating additives to the latiaes, such as polyvinyl methyl ether (Lutonal M 40). This ether has the property of becoming insoluble in water at a higher temperature, it precipitates and pulls the dispersed plastic particles from the impregnation mixture with it. However, the sensitization temperature cannot be controlled with Lutonal. It has now been found that the following process can be used particularly safely (in terms of temperature control): The aqueous impregnation mixtures are normally made anion-active. They coagulate immediately when a cationic product is added. However, if a non-ionic product is added to the anion-active dispersion as a stabilizer, a cation-active product can be added at the same time. There are a number of non-ionic products that lose their effectiveness at different temperatures. When this temperature threshold is reached, the cation-active product has a precipitating effect on the anion-active impregnation mixture. IGO Tl. Solid non-ionic wetting agent (product LA 140) solid Cation-active wetting agent (Silastan DCI) le5 solid Aluminum sulfate 1 solid are adjusted to a solids content of 22 rio 'with water. (It should be noted that the cation-active product is added last to the mixture).

0 Das Produkt LA 140 verliert seine Wirksamkeit bei ca. 42 C. Bei dieser Temperatur koaguliert die oben angebene Rezeptur. Beispiel 2: Durch Variation der zugegebenen Mengen am kationen und nicht ionogene Produkt läßt sich die Koagulationstemperatur beliebig variieren:- Polyacrylester (Acronal 30 D) 100 Tl. Produkt LA 140 (nicht ionogen) 6 Silastan DG (kationaktiv) op88 Aluminiumsulfat 1 werden mit Wasser auf eieen Festgehalt von 20 % eingestellt. Diese Mischung koaguliert bei einer Temperatur von 50 OC. 0 The LA 140 product loses its effectiveness at approx. 42 C. At this temperature, the above formulation coagulates. Example 2: By varying the amounts of cation and non-ionic product added, the coagulation temperature can be varied as desired: Polyacrylic ester (Acronal 30 D) 100 Tl. Product LA 140 (non-ionic) 6 Silastan DG (cation active) op88 Aluminum sulfate 1 are adjusted to a solids content of 20 % with water. This mixture coagulates at a temperature of 50 ° C.

Claims (2)

Patentansprüche: 1) Verfahren zur Herstellung wärmesensibler Imprägniermischungen, dadurch gekennzeichnet, daß einer anionisch eingestellten Imprägniermischung ein nicht ionogenes und ein kationaktives Produkt beigegeben wird. Claims: 1) Process for the production of heat-sensitive impregnation mixtures, characterized in that a non-ionic and a cation-active product is added to an anionically adjusted impregnation mixture. 2) Verfahren zur Herstellung wärmesensibler Imprägniermischungen, dadurch gekennzeichnet, daß einer kationisch eingestellten Imprägniermischung ein nicht ionogenes und ein anionaktives Produkt beigefügt werden.2) Process for the production of heat-sensitive impregnation mixtures, thereby characterized in that a cationically adjusted impregnation mixture is not ionogenic and an anionic product can be added.
DE19671619050 1967-06-14 1967-06-14 Process for the production of heat-coagulating impregnation mixtures Pending DE1619050A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0052686 1967-06-14

Publications (1)

Publication Number Publication Date
DE1619050A1 true DE1619050A1 (en) 1970-01-15

Family

ID=7105650

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19671619050 Pending DE1619050A1 (en) 1967-06-14 1967-06-14 Process for the production of heat-coagulating impregnation mixtures

Country Status (1)

Country Link
DE (1) DE1619050A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2226269A1 (en) * 1972-05-30 1973-12-20
DE2263921A1 (en) * 1972-12-29 1974-03-21
DE2414428A1 (en) * 1973-03-30 1974-10-10 Sandoz Ag PROCESS FOR BONDING FIBERS IN NON-WOVEN FABRICS
DE2306541C2 (en) * 1973-02-10 1984-09-27 Basf Ag, 6700 Ludwigshafen Process for the preparation of heat-sensitive anionic or nonionic aqueous polymer dispersions

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2226269A1 (en) * 1972-05-30 1973-12-20
DE2263921A1 (en) * 1972-12-29 1974-03-21
DE2306541C2 (en) * 1973-02-10 1984-09-27 Basf Ag, 6700 Ludwigshafen Process for the preparation of heat-sensitive anionic or nonionic aqueous polymer dispersions
DE2414428A1 (en) * 1973-03-30 1974-10-10 Sandoz Ag PROCESS FOR BONDING FIBERS IN NON-WOVEN FABRICS

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