DE807555C - Process for the production of artificial resins - Google Patents

Process for the production of artificial resins

Info

Publication number
DE807555C
DE807555C DEP21484D DEP0021484D DE807555C DE 807555 C DE807555 C DE 807555C DE P21484 D DEP21484 D DE P21484D DE P0021484 D DEP0021484 D DE P0021484D DE 807555 C DE807555 C DE 807555C
Authority
DE
Germany
Prior art keywords
production
plasticizers
artificial resins
resins
dicyandiamide
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
DEP21484D
Other languages
German (de)
Inventor
Dr Franz Kaess
Dr Ursula Londenberg Geb Todt
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.)
SUEDDEUTSCHE KALKSTICKSTOFF-WERKE AG
Evonik Operations GmbH
Original Assignee
SUEDDEUTSCHE KALKSTICKSTOFF-WERKE AG
SKW Trostberg 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 SUEDDEUTSCHE KALKSTICKSTOFF-WERKE AG, SKW Trostberg AG filed Critical SUEDDEUTSCHE KALKSTICKSTOFF-WERKE AG
Priority to DEP21484D priority Critical patent/DE807555C/en
Application granted granted Critical
Publication of DE807555C publication Critical patent/DE807555C/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

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 von künstlichen Harzen Die Erfindung bezweckt die Herstellung künstlicher Harze aus Dicvandiamid.Process for the preparation of artificial resins The invention aims the manufacture of artificial resins from dicvandiamide.

Es wurde gefunden, daß Dicvandiamid nach Wärmebehandlung finit Weichmachern, insbesondere zwei- und dreiwertigen Alkoholen und deren Abkömmlingen, mit Aldehyden kondensiert. Kunstharze liefert, welche kochwasserbeständig sind und gleichzeitig eine besondere Elastizität aufweisen.It was found that dicvandiamide after heat treatment finite plasticizers, in particular dihydric and trihydric alcohols and their derivatives, with aldehydes condensed. Synthetic resins supplies which are resistant to boiling water and at the same time have a particular elasticity.

Die Arbeitsweise ist folgende: Dicyandiamid wird mit Glykol so lange erwärmt, bis die Reaktion beendet ist. Das dabei erhaltene Produkt wird mit Formaldehyd neutral oder schwach alkalisch einkondensiert, wobei man zweckmäßig unter Rückfluß arbeitet. Die Endstufe der Kondensation wird in schwachsaurem Medium durchgeführt. Das erhaltene Kunstharz kann in der üblichen Weise mit Füllstoffen verarbeitet werden.The way it works is as follows: Dicyandiamide is made with glycol for so long heated until the reaction is complete. The product obtained is treated with formaldehyde condensed in neutral or slightly alkaline, advantageously under reflux is working. The final stage of the condensation is carried out in a weakly acidic medium. The synthetic resin obtained can be processed with fillers in the usual way.

Die besonderen Vorteile dieser Arbeitsweise sind, daß man ohne Zusätze von Phenol. Kresol, Triazineu oder Ilarnstoff usw. heißwasserbeständige Harze erhält, die ohne besondere Auswaschung von wasserlöslichen Anteilen bei beendeter Kondensation anfallen. Der Zusatz von Weichmachern erübrigt sich, da bei der Reaktion finit (llvkol in ansreichender Menge Weichharze gebildet werden.The particular advantages of this mode of operation are that you can do without additives of phenol. Contains cresol, triazine or ilarnea etc. resins that are resistant to hot water, those without special washing out of water-soluble components when the condensation has ended attack. The addition of plasticizers is unnecessary, since the reaction finite (llvkol Soft resins are formed in sufficient quantities.

Beispiel too Gewichtsteile Dicvandiamid, getrocknet, werden mit 20 Voluinteilen Glykol bei Temperaturen von 16o bis 2oo° erhitzt bis zum Ende der Reaktion. Zeitdauer j bis 2 Stunden. Das zerkleinerte Reaktionsprodukt wird mit 300 Volumteilen Formaldehyd (33o/oig) unter Rückfluß kondensiert. wobei auf ph von g eingestellt wird. Die Kondensation wird in saurer Phase (Essigsäure) bei PH 5 bis 6 ztt Ende geführt. In das erhaltene Harz wird Füllstoff eingearbeitet, die Mischung wird in der üblichen Weise getrocknet und gefeint. Die Kochprobe (io Minuten in kochendem Wasser) ist positiv, der Preßling -hat seinen Glanz behalten und zeigt keinerlei Veränderung.Example too parts by weight of dicvandiamide, dried, are heated with 20 parts by volume of glycol at temperatures of 160 to 200 ° until the reaction has ended. Duration j up to 2 hours. The comminuted reaction product is condensed under reflux with 300 parts by volume of formaldehyde (33%). setting to ph of g. The condensation is carried out in the acidic phase (acetic acid) at pH 5 to 6 at the end. Filler is incorporated into the resin obtained, and the mixture is dried and refined in the usual manner. The cooking test (10 minutes in boiling water) is positive, the pressed part has retained its shine and shows no change whatsoever.

Claims (3)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Kunstharzen aus Dicvandiamid und Weichmachern, dadurch gekennzeichnet, daß man eine gegenüber der bekannten Zugabe von Weichmachern zum fertigen Harz vielfache Menge von Weichmachern mit Dicyandiamid umsetzt und das Umsetzungsprodukt mit Aldehyd kondensiert. PATENT CLAIMS: i. Process for the production of synthetic resins from Dicvandiamid and plasticizers, characterized in that one opposite the known addition of plasticizers to the finished resin multiple amounts of plasticizers reacts with dicyandiamide and condenses the reaction product with aldehyde. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß man Dicyandiamid mit G1_vkol in der Wärme umsetzt. 2. Procedure according to claim i, characterized in that dicyandiamide with G1_vkol in the Converts heat. 3. Verfahren nach Anspruch i und 2, dadurch gekennzeichnet, daß man in einer ersten Verfahrensstufe alkalisch, in einer zweiten sauer arbeitet.3. The method according to claim i and 2, characterized in that one alkaline in a first process stage, acidic in a second.
DEP21484D 1948-11-12 1948-11-12 Process for the production of artificial resins Expired DE807555C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP21484D DE807555C (en) 1948-11-12 1948-11-12 Process for the production of artificial resins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP21484D DE807555C (en) 1948-11-12 1948-11-12 Process for the production of artificial resins

Publications (1)

Publication Number Publication Date
DE807555C true DE807555C (en) 1951-07-02

Family

ID=7368279

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP21484D Expired DE807555C (en) 1948-11-12 1948-11-12 Process for the production of artificial resins

Country Status (1)

Country Link
DE (1) DE807555C (en)

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