DE323665C - Process for making an adhesive - Google Patents

Process for making an adhesive

Info

Publication number
DE323665C
DE323665C DE1919323665D DE323665DA DE323665C DE 323665 C DE323665 C DE 323665C DE 1919323665 D DE1919323665 D DE 1919323665D DE 323665D A DE323665D A DE 323665DA DE 323665 C DE323665 C DE 323665C
Authority
DE
Germany
Prior art keywords
adhesive
making
formaldehyde
dicyandiamide
sulfuric acid
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
DE1919323665D
Other languages
German (de)
Inventor
Hans Wallasch
Original Assignee
Hans Wallasch Dr
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 Hans Wallasch Dr filed Critical Hans Wallasch Dr
Application granted granted Critical
Publication of DE323665C publication Critical patent/DE323665C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08G12/14—Dicyandiamides; Dicyandiamidines; Guanidines; Biguanidines; Biuret; Semicarbazides
    • C08G12/16—Dicyandiamides

Description

Verfahren zur Herstellung eines Klebstoffs. Die vorliegende Erfindung bezweckt die Herstellung eines Klebstoffs aus Dicyandiamid, Formaldehyd und Schwefelsäure, der je nach den Mengenverhältnissen der Bestandteile und dem Zusatz von Wasser für die verschiedensten Zwecke benutzt werden kann. Beispiel: ioo g Dicyandiamid und etwa zoo g Formaldehyd (3o prozentig) versetzt man vorsichtig mit 15 g konz. Schwefelsäure und erhitzt unter Umrühren, wobei das Dicyandiamid sich löst und bei etwa 8o bis 85° mit Formaldehyd zu reagieren beginnt. Ein weiteres gelindes Erwärmen von etwa 112 Stunde genügt zur Beendigung der Reaktion. Nach diesem # Beispiel erhält man einen flüssigen- Klebstoff, der dem bekannten Gummi Arabicum vollkommen gleichwertig ist. Eine Probenahme gibt Aufschluß über die gewünschte Konsistenz. Zähere Leime erhält man, wenn weniger Formaldehyd gebraucht wird.Method of making an adhesive. The present invention aims to produce an adhesive from dicyandiamide, formaldehyde and sulfuric acid, depending on the proportions of the ingredients and the addition of water for can be used for a wide variety of purposes. Example: ioo g dicyandiamide and About zoo g of formaldehyde (3o percent) are carefully mixed with 15 g of conc. sulfuric acid and heated with stirring, the dicyandiamide dissolving and at about 8o to 85 ° begins to react with formaldehyde. Another gentle warming of about 112 hours are sufficient to end the reaction. After this # example you get a liquid adhesive that is completely equivalent to the well-known gum arabic is. A sampling provides information about the desired consistency. Tougher glues is obtained when less formaldehyde is used.

Claims (1)

PATENT-ANSpRucH Verfahren zur Herstellung eines Klebstoffs, dadurch gekennzeichnet, daß Formaldehyd und Dicyandiamid bei Gegenwart von Schwefelsäure zur Kondem . tion gebracht werden.PATENT CLAIM Process for producing an adhesive, thereby characterized in that formaldehyde and dicyandiamide in the presence of sulfuric acid to the condem. tion can be brought.
DE1919323665D 1919-04-19 1919-04-19 Process for making an adhesive Expired DE323665C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE323665T 1919-04-19

Publications (1)

Publication Number Publication Date
DE323665C true DE323665C (en) 1920-07-31

Family

ID=6174865

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1919323665D Expired DE323665C (en) 1919-04-19 1919-04-19 Process for making an adhesive

Country Status (1)

Country Link
DE (1) DE323665C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE833708C (en) * 1949-11-01 1952-03-10 Bayer Ag Process for the preparation of dicyandiamide-formaldehyde condensation products
US2631920A (en) * 1948-11-24 1953-03-17 Ciba Ltd Compositions for the improvement of fastness properties of dyeings and printings of water-soluble dyestuffs
DE918743C (en) * 1948-11-24 1954-10-04 Ciba Geigy Process for improving the fastness properties of dyeings or prints, produced from water-soluble dyes
DE924511C (en) * 1948-11-24 1955-03-03 Ciba Geigy Process for improving the fastness properties of dyeings or prints, produced from water-soluble dyes
US2828288A (en) * 1949-10-31 1958-03-25 Bayer Ag Water-soluble dicyandiamideformaldehyde condensates

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2631920A (en) * 1948-11-24 1953-03-17 Ciba Ltd Compositions for the improvement of fastness properties of dyeings and printings of water-soluble dyestuffs
DE918743C (en) * 1948-11-24 1954-10-04 Ciba Geigy Process for improving the fastness properties of dyeings or prints, produced from water-soluble dyes
DE924511C (en) * 1948-11-24 1955-03-03 Ciba Geigy Process for improving the fastness properties of dyeings or prints, produced from water-soluble dyes
US2828288A (en) * 1949-10-31 1958-03-25 Bayer Ag Water-soluble dicyandiamideformaldehyde condensates
DE833708C (en) * 1949-11-01 1952-03-10 Bayer Ag Process for the preparation of dicyandiamide-formaldehyde condensation products

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