DE813213C - Process for the production of crystal clear plastics - Google Patents

Process for the production of crystal clear plastics

Info

Publication number
DE813213C
DE813213C DEV361D DEV0000361D DE813213C DE 813213 C DE813213 C DE 813213C DE V361 D DEV361 D DE V361D DE V0000361 D DEV0000361 D DE V0000361D DE 813213 C DE813213 C DE 813213C
Authority
DE
Germany
Prior art keywords
production
clear plastics
crystal clear
crystal
insoluble
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
DEV361D
Other languages
German (de)
Inventor
Heinrich Dr Gehlen
Theo Dr Lieser
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.)
Glanzstoff AG
Original Assignee
Glanzstoff 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 Glanzstoff AG filed Critical Glanzstoff AG
Priority to DEV361D priority Critical patent/DE813213C/en
Application granted granted Critical
Publication of DE813213C publication Critical patent/DE813213C/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
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/0622—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms
    • C08G73/0638—Polycondensates containing six-membered rings, not condensed with other rings, with nitrogen atoms as the only ring hetero atoms with at least three nitrogen atoms in the ring

Landscapes

  • 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)
  • Polyamides (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Description

Verfahren zur Herstellung von glasklaren Kunststoffen Es ist bekannt, daß die @lonoalkylcvanamide schon bei gewöhnlicher Temperatur langsam in die trimolekularen Trialkylisomelamine der allgemeinen Formel übergehen. Es wurde nun gefunden, daß bei der Übertragung dieser Reaktion auf die bisher nicht dargestellten bifunktionellen Alkvlendicyanamide der allgemeinen Formel N C . N H - R - N H - C N, in der Reinen beliebigen, auch Heteroatome enthaltenden organischen Rest bedeutet, die Reaktion in entsprechender `reise verläuft, und zwar unter Bildung glasklarer, sehr harter, völlig unlöslicher, urischmelzbarer und unbrennbarer hochmolekularer Verbindungen, deren Analyse in Übereinstimmung mit der Formel für Polyalkylenisomelamine steht.Process for the production of crystal clear plastics It is known that the @lonoalkylcvanamides slowly convert into the trimolecular trialkylisomelamines of the general formula even at ordinary temperature pass over. It has now been found that when this reaction is transferred to the bifunctional alkylene dicyanamides of the general formula NC, not shown so far. NH - R - NH - CN, in which pure means any organic radical, also containing heteroatoms, the reaction proceeds in a corresponding `` journey '', namely with the formation of crystal clear, very hard, completely insoluble, fusible and incombustible high molecular weight compounds, the analysis of which is consistent with the formula for polyalkylene isomelamine.

Vermutlich verläuft die Polymerisation unregelmäßig und dreidimensional. Es entstehen jedenfalls hochvernetzte, sehr feste und auch in chemischer Beziehung sehr widerstandsfähige Kunststoffe, die als Kunstglas, aber auch als Animalisierungsmittel für Kunstseide bzw. Zellwolle und für Lackierungs- und Leimzwecke Verwendung finden können. Beispiel Z .The polymerization is presumably irregular and three-dimensional. In any case, highly cross-linked, very solid and also in a chemical relationship arise very resistant plastics, which are used as synthetic glass, but also as an animalizing agent for rayon or viscose wool and for painting and glueing purposes can. Example Z.

Das nach einem der für die Gewinnung von Monoalkylcyanamide üblichen Verfahren dargestellte und bisher nicht beschriebene Hexamethylen-bis-cyanamid (Hexamethylendicarbaminsäurenitril) der Formel N G H N - (C HZ) h - N H - C N wird durch Erwärmen auf knapp ioo° zum Schmelzen gebracht und die Schmelze eine Stunde lang auf 5o° und eine weitere Stunde lang auf 70' erhitzt. Es bildet sich ein sehr harter, glasklarer, schwach gelblicher Kunststoff, der in allen Lösungsmitteln auch in der Siedehitze unlöslich und unschmelzbar ist.The hexamethylene-bis-cyanamide (hexamethylenedicarbamic acid nitrile) of the formula NGHN - (C HZ) h - NH - CN, which is shown by one of the methods customary for the production of monoalkylcyanamides and has not yet been described, is brought to melt by heating to just under 100 ° and the melt Heated to 50 ° for an hour and 70 ° for another hour. A very hard, crystal-clear, slightly yellowish plastic forms, which is insoluble and infusible in all solvents, including at boiling point.

Beispiel 2 Oktamethylen-bis-cyanamid, das bei 74 bis 75' schmilzt, wird bis zum vollständigen Schmelzen auf Zoo ° erhitzt und die Schmelze eine Stunde lang auf und dann eine Stunde lang auf ioo° erhitzt. Auch hier bildet sich ein glasklarer, unlöslicher und unschmelzbarer Kunststoff.Example 2 Octamethylene-bis-cyanamide, melting at 74 to 75 ' , is heated to Zoo ° until completely melted and the melt is heated to 100 ° for one hour and then to 100 ° for one hour. Here, too, a crystal-clear, insoluble and infusible plastic is formed.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von sehr harten, unlöslichen und unschmelzbaren, gegen chemische Einwirkungen äußerst widerstandsfähigen, glasklaren Kunststoffen, dadurch gekennzeichnet, daß Alkylen-bis-cyanamide der allgemeinen Formel N C - H N - R - H N - C N, in der R einen beliebigen zweiwertigen, auch Heteroatome enthaltenden organischen Rest bedeutet, durch Erhitzen über ihren Schmelzpunkt polymerisiert werden. PATENT CLAIM: Process for the production of very hard, insoluble and infusible, crystal-clear plastics which are extremely resistant to chemical effects, characterized in that alkylene-bis-cyanamides of the general formula NC - HN - R - HN - CN, in which R is any bivalent , also means organic radical containing heteroatoms, are polymerized by heating above their melting point.
DEV361D 1944-11-28 1944-11-28 Process for the production of crystal clear plastics Expired DE813213C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV361D DE813213C (en) 1944-11-28 1944-11-28 Process for the production of crystal clear plastics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV361D DE813213C (en) 1944-11-28 1944-11-28 Process for the production of crystal clear plastics

Publications (1)

Publication Number Publication Date
DE813213C true DE813213C (en) 1951-09-10

Family

ID=7569062

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV361D Expired DE813213C (en) 1944-11-28 1944-11-28 Process for the production of crystal clear plastics

Country Status (1)

Country Link
DE (1) DE813213C (en)

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