Triazine‐based polymers, 2. Synthesis and characterization of polyethers

Abstract

Triazine-based polyethers can be synthesized by phase transfer catalysed interfacial polycondensation at room temperature and reaction times of about 1 to 3 h. In this way, more than 20 polyethers were synthesized and solubilities, glass transition temperatures, thermogravimetric data, elongations at break, tensile strengths, elasticity moduli and impact strengths were determined. In addition, the degree of crystallinity was investigated for the polymer obtained from of 2,4-dichloro-6-diethylamino-s-triazine and bisphenol A by wide angle X-ray diffraction. The increment of the 1,3,5triazinetriyl ring was determined, which made it possible to calculate the glass transition temperatures of some polyethers according to van Krevelen. ZUSAMMENFASSUNGPolyether auf Triazinbasis kiinnen mittels phasentransferkatalysierter Polykondensation bei Raumtemperatur und Reaktionszeiten von 1 bis 3 h hergestellt werden. Von mehr als 20 Polyethern wurden Liislichkeiten, Glasiibergangstemperaturen, thermogravimetrische Daten, ReiBdehnungen, Reiofestigkeiten, Elastizitatsmoduli und Schlagzahigkeiten bestimmt. Von den Polymeren aus 2,4-Dichlor-6-diethylamino-s-triazin und Bisphenol A wurde zusatzlich der Kristallisationsgrad mittels Riintgenweitwinkelstreuung ermittelt. Das Inkrement des 1,3,5-Triazintriylrings wurde bestimmt, so da13 die Glastemperaturen einiger Polyether nach van Krevelen berechnet werden konnten.

Examining structure property relationships in coatings based on substituted linear aromatic polycyanurates

“…These data are in good agreement with those published by Braun and Ziser [11,20] for their poly(ethoxy-cyanurate)s which their obtained from the copolymerisation of 2,4-dichloro-6-ethoxy-s-triazine with a variety of bisphenols.…”

“…A number of workers have reported exotherms in poly(methoxycyanurate)s when subjected to similar heating cycles [10,13,14,[22][23][24]. However, it is interesting to note that Braun and Ziser [11,20], who worked extensively with 2,4-dichloro-6-ethoxy-triazine, did not report exothermic behaviour in their samples. On first inspection, the nature of the changes in the samples which gave rise to the prominent exotherms observed would appear to be due to crystallisation in the polymer matrix; TGA data showed clearly that there was no weight loss associated with the event.…”

Examining thermal stability and structure property relationships in coatings based on linear aromatic poly(methoxy-thiocyanurate)s

“…The exotherms are generally very similar for all the samples analysed in this work and also to other data reported by other workers for poly(methoxy-cyanurate)s subjected to similar heating cycles [6,9,10,20e22]. Although Braun and Ziser [8,17], who worked extensively with 2,4-dichloro-6-ethoxy-triazine, did not report exothermic behaviour in their samples, we have observed similar behaviour in poly(methoxy-cyanurate)s [4]. The exothermic peaks observed in the DSC thermograms were analysed using the method of Sun et al [23] on the assumption that a single first order process was responsible for the exotherm.…”

“…3. All the samples displayed similar stability in nitrogen and the onsets of decomposition were of comparable magnitude to those observed for poly(methoxy-cyanurate)s [4] and poly(ethoxy-cyanurate)s [8,17], with the primary differences being that the poly(methoxy-thiocyanurate)s exhibit a slightly higher char yield at 490 C (average char yield 62%). A dynamic TGA study of DPEMTC from ambient to 1000 C in nitrogen showed that decomposition proceeds via a three-stage mechanism.…”

New π‐Conjugated Polymers Containing 1,3,5‐Triazine Units in the Main Chain: Synthesis and Optical and Electrochemical Properties of the Polymers

“…Polymers and supramolecules containing 1,3,5-triazine units have been widely used in industry [1][2][3][4][5][6][7] because of their high thermal stability. In recent years, some new types of polymers and supramolecules containing 1,3,5-triazine units have been reported.…”