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DE725007C - Process for the production of a press powder by alkaline condensation of dicyandiamide, formaldehyde and phenol - Google Patents

Process for the production of a press powder by alkaline condensation of dicyandiamide, formaldehyde and phenol

Info

Publication number
DE725007C
DE725007C DEB178649D DEB0178649D DE725007C DE 725007 C DE725007 C DE 725007C DE B178649 D DEB178649 D DE B178649D DE B0178649 D DEB0178649 D DE B0178649D DE 725007 C DE725007 C DE 725007C
Authority
DE
Germany
Prior art keywords
formaldehyde
phenol
dicyandiamide
production
alkaline condensation
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
DEB178649D
Other languages
German (de)
Inventor
Dr Hans Heinrich Franck
Dr Emil Hey
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.)
BAYERISCHE STICKSTOFF WERKE AG
Original Assignee
BAYERISCHE STICKSTOFF WERKE 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
Priority claimed from DEB176589D external-priority patent/DE722961C/en
Application filed by BAYERISCHE STICKSTOFF WERKE AG filed Critical BAYERISCHE STICKSTOFF WERKE AG
Priority to DEB178649D priority Critical patent/DE725007C/en
Application granted granted Critical
Publication of DE725007C publication Critical patent/DE725007C/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
    • C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
    • C08G14/02—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes
    • C08G14/04—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols
    • C08G14/06—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols and monomers containing hydrogen attached to nitrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Description

Verfahren zur Herstellung eines Preßpulvers durch alkalische Kondensation von Dicyandiamid, Formaldehyd und Phenol Das Hauptpatent bezieht sich auf ein Verfahren zur Herstellung eines Preßpulvers durch alkalische Kondensation von Dicyandiami-d, Formaldehyd un,d Phenol, welches dadurch gekennzeichnet ist, daß Dicyandiami d -Formaldehyd -Anfang skonden.sationsprodukte mit Phenol-Formal.dehyd'-Anfangskondensationsprodukten in ,solcher Menge vermischt und weiterkondensiert werden, -daß im Endprodukt auf ein Mol Dicyan.diamid und 2,75 bis 3,25 Mol Formaldehyd nicht mehr als ein Mol Phenol kommt.Process for the production of a molding powder by alkaline condensation of dicyandiamide, formaldehyde and phenol The main patent relates to a process for the production of a press powder by alkaline condensation of dicyandiami-d, Formaldehyde un, d phenol, which is characterized in that dicyandiami d -formaldehyde -Initial condensation products with phenol-formaldehyde 'initial condensation products are mixed and further condensed in such an amount that in the end product one mole of dicyanodiamide and 2.75 to 3.25 moles of formaldehyde not more than one mole of phenol comes.

Die weitere Ausbildung und Verbesserung dieses Verfahrens besteht erfindungsgemäß darin, daß,die Komponenten, nämlich Dicyandiamid, Formaldehyd und Phenol, gemeinsam kondensiert werden und daß hierbei ein Mischungsverhältnis entsprechend i Mol Dicyandiami,d,-i Mol Phenol und 3 bis 3,5 Mol Fbrmaldehyd verwendet wird. Dieses Verfahren bietet den Vorteil, daß es wesentlich einfacher ist, wobei durch Erhöhung der Formaldehydmenge eine Steigerung der Harzausbeute und weitere Verbesserung der mechanischen Eigenschaften erhalten wird.There is further training and improvement of this procedure according to the invention in that the components, namely dicyandiamide, formaldehyde and Phenol, are condensed together and that this is a mixing ratio accordingly i mole of dicyandiami, d, -i mole of phenol and 3 to 3.5 moles of malaldehyde is used. This method has the advantage that it is much easier to take through Increasing the amount of formaldehyde, an increase in the resin yield and further improvement the mechanical properties is obtained.

Ebenso wie beim Verfahren des Hauptpatentes kann -das Molverhältnis von Dicyandiamid zu Phenol innerhalb gewisser Grenzen verändert werden je nach den Eigenschaften, die die Preßlinge besitzen sollen.As in the process of the main patent, the molar ratio from dicyandiamide to phenol within certain limits changes are depending on the properties that the compacts are to have.

Es ist bereits bekannt, Mischharze aus Di--cyandiamid, Plienöl und Formaldehyd durch- gemeinsame Kondensation der drei Komli nenten mit oder ohne Beschleuniger her: stellen. Hierbei werden aber zufolge eine>: abweichenden Kolverhältnisses, nämlich von i hlol Dicyamdiamid : 2 Mol Phenol : 3 Mol Formaldehyd bzw. i Mol Dicyandiaini.d : i Mol Phenol : a Mol Formaldehyd Harze erhalten, .die den heutigen Anforderungen der Preßtechnikbezüglich der Härtungsgeschwindigkeit nicht genügen und auch nur eine geringe Alkalibeständigkeit besitzen.It is already known to use mixed resins made from dicyandiamide, plien oil and formaldehyde. common condensation of the three komli with or without an accelerator: place. Here, however, according to a>: deviating col ratio, namely of 1 mole of dicyamdiamide: 2 moles of phenol: 3 moles of formaldehyde or 1 mole of dicyandiae / d: 1 mole of phenol: a mole of formaldehyde resins are obtained, which meet today's requirements of pressing technology with regard to the curing rate are not sufficient and also have only a low resistance to alkali.

Ausführungsbeispiel: 126o g Dicyandiami.d (15 Mol) und 1410 g Phenol (15 :12o1) werden mit 3700 ccm 40°4-igen Formalins (49,3 Mol) vermischt und am Rückflußkühler zum Sieden erhitzt. Nach etwa 2i/_ Stunden trübt sich die his dahin klare Lösung, und es scheidet sich sehr rasch ein hydrophobes Harz aus. Das zunächst noch dünnflüssige Produkt wird >ei etwa 8o° so lange weiter polymerisiert, bis es ziemlich fest ;e:worden ist, was nach etwa i Stunde Fall ist. Nach -dem Erkalten liegt ein es, ,gelblich gefärbtes Produkt vor, das 14. sich nach- dem Mahlen; Waschen und Trocknen ohne weiteres bei 16gpbis 170-J zu glasähnlichen Gegenständen vöh außerordentlielier Festigkeit und Elastizität verlfessen l-,ißt.Exemplary embodiment: 1260 g of Dicyandiami.d (15 mol) and 1410 g of phenol (15: 12o1) are mixed with 3700 ccm of 40 ° 4-strength formalin (49.3 mol) and heated to the boil on a reflux condenser. After about two and a half hours, the solution, which was clear up to that point, becomes cloudy and a hydrophobic resin precipitates very quickly. The initially still liquid product is polymerized> about 80 ° until it has become quite solid, which takes about an hour Case is. After cooling down there is a es,, yellowish colored product, that 14th after grinding; Wash and dry easily at 16gp to 170-J to leave glass-like items with extraordinary strength and elasticity.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Preßpulvers durch alkalische Kondensation von Dicyandiamid, Formaldehyd und Phenol nach Patent 722 961, dadurch gekennzeichnet, daß die Komponenten gemeinsam ikondensiert werden und daß hierbei ein Mischungsverhältnis entsprechend i -Zol Dicyandiamid, i 11o1 Phenol und 3 bis 3,5 Mol Formaldehyd verwendet wird.PATENT CLAIM: Process for the production of a molding powder by alkaline condensation of dicyandiamide, formaldehyde and phenol according to patent 722 961, characterized in that the components are condensed together and that in this case a mixing ratio corresponding to i-zene dicyandiamide, i 11o1 phenol and 3 to 3.5 Mole of formaldehyde is used.
DEB178649D 1936-12-11 1937-05-30 Process for the production of a press powder by alkaline condensation of dicyandiamide, formaldehyde and phenol Expired DE725007C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB178649D DE725007C (en) 1936-12-11 1937-05-30 Process for the production of a press powder by alkaline condensation of dicyandiamide, formaldehyde and phenol

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEB176589D DE722961C (en) 1936-12-11 1936-12-11 Process for the production of pressed powders
DEB178649D DE725007C (en) 1936-12-11 1937-05-30 Process for the production of a press powder by alkaline condensation of dicyandiamide, formaldehyde and phenol

Publications (1)

Publication Number Publication Date
DE725007C true DE725007C (en) 1942-09-14

Family

ID=7008457

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB178649D Expired DE725007C (en) 1936-12-11 1937-05-30 Process for the production of a press powder by alkaline condensation of dicyandiamide, formaldehyde and phenol

Country Status (1)

Country Link
DE (1) DE725007C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040781B (en) * 1954-07-15 1958-10-09 Westinghouse Electric Corp Process for producing flame-retardant laminates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1040781B (en) * 1954-07-15 1958-10-09 Westinghouse Electric Corp Process for producing flame-retardant laminates

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