3731-86-0Relevant academic research and scientific papers
Structure-property relationship of highly ??-conjugated schiff-base moiety in liquid crystal diepoxide polymerization and mesophases stabilization
Liu, Huan,Fu, Zien,Xu, Kai,Cai, Hualun,Liu, Xin,Chen, Mingcai
, p. 7568 - 7577 (2011)
A study of the structure-property relationship of the highly ??-conjugated Schiff-base moiety in polymerization of a liquid crystal (LC) diepoxide oligomer (PBMBA) and mesophases stabilization has been investigated. We first proposed two exothermic peaks
Physico-chemical characterization of solid state reaction between terephtalaldehyde and p-aminophenol
Meltzer, Viorica,Oancea, Petru?a,Pincu, Elena,St?nculescu, Ioana
, p. 273 - 280 (2021/11/30)
The aim of this work was to investigate the possibilities of the solvent free synthesis of Schiff base (azomethyne) from terephthalaldehyde and p-aminophenol. The pure compounds and the reaction product were studied by differential scanning calorimetry (D
Using the liquid crystalline epoxy resin thermoset aromatic diamine
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Paragraph 0049-0051, (2020/08/26)
PROBLEM TO BE SOLVED: To provide an aromatic diamine that gives a heat-cured product useful as an electric insulation material for radiating the heat generated from a semiconductor element and the like, and a liquid crystalline epoxy resin heat-cured product prepared therewith.SOLUTION: This invention relates to an aromatic diamine represented by formula (1), and a heat-cured product of the diamine and a liquid crystalline bisepoxide represented by formula (2) (where R-Rindependently represent a hydrogen atom, a C1-C6 alkyl group or a C1-C6 alkoxy group, m is an integer of 2-14, and Xis a divalent aromatic group).SELECTED DRAWING: None
Synthesis and characterization of new aromatic polyesters derived from new aromatic di- and tri hydroxyl monomers with 4-phenylenediacrylic acid and malonic acid
Mutar, Mohammed A.
, p. 7846 - 7852 (2015/02/02)
In the present work, six new aromatic polyesters (PE1-PE6) have been synthesized in high yields from the polycondensation between di- and tri hydroxyl monomers containing methylene unit, Schiff-base linkages and pyridine heterocyclic ring with 4-phenylenediacrylic acid and malonic acid using dibutyltin dilaurate as catalyst. The structure analysis of the polymers has been carried out by using FT-IR and 1H NMR spectroscopy. The monomers were characterized by FTIR and 1H NMR. FT-IR technique confirmed the esterification of di and tri hydroxyl monomers by the acid in all the polymers.
ELECTRONIC ABSORPTION SPECTRA OF AROMATIC SCHIFF BASES. PART II. TEREPHTHALDEHYDE DERIVATIVES
Muzalewski, Feliks,Gawinecki, Ryszard
, p. 565 - 572 (2007/10/02)
The effect of para substituents in the aniline moiety of terephthalidene-di(p-R-anilines) on their UV-VIS spectra has been studied.A linear relationship has been found between position of long-wavelength absorption bands of terephthalidene-dianilines with
