DE641268C - Process for the production of buttons, tokens and similarly shaped objects from urea-formaldehyde condensation products - Google Patents

Process for the production of buttons, tokens and similarly shaped objects from urea-formaldehyde condensation products

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Publication number
DE641268C
DE641268C DE1930641268D DE641268DD DE641268C DE 641268 C DE641268 C DE 641268C DE 1930641268 D DE1930641268 D DE 1930641268D DE 641268D D DE641268D D DE 641268DD DE 641268 C DE641268 C DE 641268C
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Prior art keywords
urea
buttons
tokens
condensation products
production
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Expired
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DE1930641268D
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German (de)
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Individual
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
    • C08G12/12—Ureas; Thioureas

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  • 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

KLASSE 12 ο GRUPPE 17 05CLASS 12 ο GROUP 17 05

Oscar Neuß in Berlin-CharlottenburgOscar Neuss in Berlin-Charlottenburg

Die Erfindung betrifft ein "Verfahren zur Herstellung von Knöpfen, Spielmarken und ähnlich geformten Gegenständen aus Harnstoff-Formaldehyd-Kondensationsprodukten, die in Gegenwart von sauren Kondensationsmitteln entstehen. The invention relates to a "method for Manufacture of buttons, tokens and similarly shaped objects from urea-formaldehyde condensation products, which arise in the presence of acidic condensing agents.

Carl Goldschmidt (Ber. Bd. 29, 1896, S. 2438) hat bereits aus Harnstoff mit Formaldehyd in saurer Lösung auf kaltem Wege Kondensate erhalten. Irgendeine technische Bedeutung haben diese Kondensationsversuche nicht erlangt.Carl Goldschmidt (Ber. Vol. 29, 1896, p. 2438) has already made urea with formaldehyde obtain condensates by cold means in acidic solution. These condensation experiments have some technical significance not obtained.

Sodann hat Dixon (Journ. Chem. Soc. Bd. 113 [1918] S. 238 ff.) verschiedene Versuche zur Ermittlung der chemischen Konstitution saurer Harnstoff-Formaldehyd-Kondensationsprodukte durchgeführt. Die erhaltenen pulvrigen Körner haben ebenfalls keinerlei technische Verwertung finden können:Then Dixon (Journ. Chem. Soc. Vol. 113 [1918], pp. 238 ff.) Made various attempts to determine the chemical constitution of acidic urea-formaldehyde condensation products. The received Powdery grains have also not found any technical use:

Aus der deutschen Patentschrift 412 614 ist es bereits bekanntgeworden, meerschaumartige oder porzellanartige Kunstmassen aus Harnstoff und Formaldehyd bei Gegenwart von Säuren herzustellen. Diese meerschaumartigen Massen werden nach -der Kondensation erstarren gelassen oder in Formen gegossen und bilden je nach den angewandten. Versuchsbedingungen weiße, pulverförmige bis kreidige oder auch meerschaumartige Massen. Die Herstellung erfolgt ausschließlich durch Erhitzung der Komponenten.From German patent specification 412 614 it has already become known to make meerschaum-like or porcelain-like art masses Produce urea and formaldehyde in the presence of acids. These meerschaum-like After condensation, masses are allowed to solidify or poured into molds and form depending on the applied. Test conditions white, powdery to chalky or meerschaum-like masses. The production takes place exclusively by heating the components.

Gemäß der deutschen Patentschrift 484 972 läßt man Harnstoff und Formaldehyd gleich-^ falls in der Hitze aufeinander einwirken, worauf das entstandene glasartige Kondensationsprodukt einer weiteren Behandlung durch Druck und Wärme unterworfen wird. Die vorliegende Erfindung beruht auf der Erkenntnis, daß man zu formbaren Kunst-. massen in wirtschaftlicher Weise dadurch gelangen kann, daß man in an sich bekannter Weise Harnstoff mit Formaldehyd ohne äußere Wärmezufuhr unter Zusatz von konzentrierten Säuren kondensiert (vgl. die Patentschrift 461357), dabei aber den Formaldehyd ganz erheblich auf die Hälfte herunterdrückt. Das so erhaltene Kondensationsprodukt ist eine poröse, kreidige Masse, die nach Trocknung gepulvert und heiß zu Knöpfen, Spielmarken und ähnlich geformten Gegenständen verpreßt werden kann.According to German Patent 484 972, urea and formaldehyde are allowed to equal- ^ if they act on each other in the heat, whereupon the resulting glass-like condensation product subjected to further treatment by pressure and heat. The present invention is based on Realizing that you can become malleable art. masses get through it in an economical way can that in a known manner urea with formaldehyde without external heat supply with the addition of concentrated Acids condensed (see patent specification 461357), but the formaldehyde very considerably by half. The condensation product thus obtained is a porous, chalky mass that, after drying, is powdered and hot into buttons, tokens and the like Objects can be pressed.

Au s führung s bei spielExecution example

ι kg Harnstoff wird in 1 1 Wasser gelöst. Zu der Lösung werden 1,9 kg wäßrige Formaldehydlösung (35 Gewichtsprozent) bei Zimmertemperatur, zugegeben. Der Lösung werden ferner 10 ecm konzentrierte Schwefelsäure (verdünnt mit der doppelten Menge Wasser) unter Rühren zugefügt. Der Lösung können vor dem Ausfällen Farbstoffe, Füllstoffe oder sonstige geeignete Körper, wie Phenol, Weichmachungsmittel u. dgl., zugesetzt werden. Es erfolgt in wenigen Sekunden die Ausfällung eines amorphen, porösen, weißen- Kondensationsproduktes unterι kg of urea is dissolved in 1 liter of water. 1.9 kg of aqueous formaldehyde solution are added to the solution (35 percent by weight) at room temperature. The solution will be also 10 ecm of concentrated sulfuric acid (diluted with twice the amount Water) was added with stirring. Dyes, fillers or other suitable bodies, such as phenol, plasticizers and the like can be added. It takes a few seconds the precipitation of an amorphous, porous, white condensation product under

exothermer Reaktion. Außer Mineralsäuren können auch organische Säuren (Eisessig) verwandt werden. Das kreidige Produkt wird getrocknet, gemahlen und warm (etwa 1300) z. B. auf Knöpfe verpreßt.exothermic reaction. In addition to mineral acids, organic acids (glacial acetic acid) can also be used. The chalky product is dried, ground and warm (about 130 0 ) z. B. pressed onto buttons.

Claims (1)

Patentanspruch:Claim: Verfahren zur Herstellung von Knöpfen, Spielmarken und ähnlich geformten Gegenständen aus Harnstoff-Formaldehyd-Kondensationsprodukten, dadurch gekennzeichnet, daß in an sich bekannter Weise auf etwa 1 Mol Harnstoff 1,2 Mol Formaldehyd in saurer Lösung ohne äußere Wärmezufuhr zur Einwirkung gebracht werden und das entstandene kreidige Pulver nach zuvoriger Trocknung unter Druck und Hitze geformt wird.Process for the production of buttons, tokens and similar shaped ones Objects made from urea-formaldehyde condensation products, characterized in that that in a known manner to about 1 mole of urea 1.2 moles of formaldehyde in acidic solution without external heat supply to the effect and the resulting chalky powder is shaped after drying under pressure and heat.
DE1930641268D 1930-01-14 1930-01-14 Process for the production of buttons, tokens and similarly shaped objects from urea-formaldehyde condensation products Expired DE641268C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE641268T 1930-01-14

Publications (1)

Publication Number Publication Date
DE641268C true DE641268C (en) 1937-01-27

Family

ID=6580093

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930641268D Expired DE641268C (en) 1930-01-14 1930-01-14 Process for the production of buttons, tokens and similarly shaped objects from urea-formaldehyde condensation products

Country Status (1)

Country Link
DE (1) DE641268C (en)

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