7154-31-6

Usage

Uses

Used in High-Performance Fibers Industry:
N,N'-diphenylterephthaldiamide is used as a co-monomer for the production of high-performance polyamide and aramid fibers due to its ability to enhance the thermal stability, flame retardancy, and mechanical properties of the resulting polymers.
Used in Industrial Fabrics:
N,N'-diphenylterephthaldiamide is used as a key ingredient in the manufacturing of industrial fabrics, contributing to their strength, toughness, and heat resistance, which are essential for applications in harsh environments.
Used in Composites:
N,N'-diphenylterephthaldiamide is used as a component in composite materials to improve their thermal stability and mechanical properties, making them suitable for use in demanding applications such as aerospace and automotive industries.
Used in Protective Equipment:
N,N'-diphenylterephthaldiamide is used in the production of protective equipment, such as bulletproof vests and fire-resistant clothing, due to its high melting point and resistance to various chemicals, ensuring the safety and durability of these products.
Used in Engineering Plastics and Specialty Resins:
N,N'-diphenylterephthaldiamide is used as a valuable component in the production of engineering plastics and specialty resins, leveraging its high thermal stability, flame retardancy, and resistance to chemicals for applications in various industries.

Upstream product

• 100-21-0 terephthalic acid 
• 18440-21-6 2,4-bis(anilino)-1,3-diphenyl-1,3,2,4-diazadiphosphetidine 
• 6051-65-6 Terephthalsaeureanilidchlorid 
• 62-53-3 aniline 
• 100-20-9 terephthaloyl chloride 
• 142-04-1 aniline hydrochloride 
• 542-16-5 dianilunium sulphate 
• 6668-01-5 Terephthalsaeure-bis-(ethoxycarbonyl)-ester 
• 15625-85-1 1,4-bis(1-imidazoyl)benzene 

Downstream Products

• 66012-76-8 1,1'-diphenyl-1H,1'H-5,5'-p-phenylene-bis-tetrazole 
• 4377-01-9 C₆H₄(CNC₆H₅Cl)2 

Relevant academic research and scientific papers

Irreversible Amide-Linked Covalent Organic Framework for Selective and Ultrafast Gold Recovery

Design of stable adsorbents for selective gold recovery with large capacity and fast adsorption kinetics is of great challenge, but significant for the economy and the environment. Herein, we show the design and preparation of an irreversible amide-linked covalent organic framework (COF) JNU-1 via a building block exchange strategy for efficient recovery of gold. JNU-1 was synthesized through the exchange of 4,4′-biphenyldicarboxaldehyde (BA) in mother COF TzBA consisting of 4,4′,4′′-(1,3,5-triazine-2,4,6-triyl)trianiline (Tz) and BA with terephthaloyl chloride. The irreversible amide linked JNU-1 gave good stability, unprecedented fast kinetics, excellent selectivity and outstanding adsorption capacity for gold recovery. X-ray photoelectron spectroscopy along with thermodynamic study and quantum mechanics calculation reveals that the excellent performance of JNU-1 for gold recovery results from the formation of hydrogen bonds C(N)?H???Cl and coordinate interaction of O and Au. The rational design of irreversible bonds as both inherent linkage and functional groups in COFs is a promising way to prepare stable COFs for diverse applications.

Probing the intermolecular interactions of aromatic amides containing N-heterocycles and triptycene

A series of aromatic amides incorporated with N-heterocycles or triptycene units are synthesized and studied for probing the effects of such chemical modifications on the intermolecular interactions. Single crystals of a number of heterocyclic amides and the triptycene-containing amide were obtained. Crystal structures, hydrogen bonds, lattice energy, solubility, and melting points were compared amongst relevant molecules. Suitably positioned nitrogen atoms from heterocycles are found to form intramolecular H-bonds with amide NHs at the expense of weakening or disrupting the intermolecular H-bonds. The effects of such H-bonding changes on solubility and melting point are nonetheless limited. Uniquely, the triptycene unit effectively improves the solubility of the amide without tempering the thermal resistance of the molecule. This journal is the Partner Organisations 2014.

The synthesis and characterisation of reactive poly(p-phenylene terephthalamide)s: A route towards compression stable aramid fibres

Herein we report on the synthesis of reactive poly(p-phenylene terephthalamide) (PPTA) oligomers and the preparation and characterisation of aramid fibres thereof. Methacrylate and maleimide reactive end-groups were found to be sufficiently stable in H2SO4 at 85?°C and they were used to prepare reactive PPTA oligomers. Lyotropic spin-dopes could be prepared with up to 20?wt% of reactive oligomer (Mn?=?3900?g?mol-1) and this modification did not interfere with the fibre spinning process and had no effect on the fibre tensile properties. The as-spun fibres did indeed show a modest (+0.1?GPa) improvement in compression strength. A high temperature treatment at 380?°C resulted in fibres which all show a significant increase in compressive strength over their as-spun precursors, i.e. from 0.7 to 0.9?GPa. When fibres were treated at 430?°C the compression values of the oligomer-modified fibres dropped somewhat, whereas unmodified PPTA displayed a compressive strength of 1.1?GPa. Other favourable fibre properties such as modulus and tenacity were not compromised.

Synthesis of analogues of Congo red and evaluation of their anti-prion activity

No cure as of yet exists for any of the transmissible spongiform encephalopathies. In this paper, we describe the synthesis of analogues of Congo red and evaluation against a cellular model of infection, the SMB (scrapie mouse brain) persistently infected cell line, for their ability to inhibit the infectivity of the abnormal form of prion protein (PrP-res). The compounds have also been tested for their ability to inhibit the polymerization of PrP C by PrP-res. A number of analogues showed inhibition of PrP-res infectivity at nanomolar concentrations. Several analogues show promise; the most active compound, 2a, inhibits the formation of PrP-res in SMB cells with an EC50 of 25-50 nM.