Category: 2657-87-6

COA of Formula: C12H12N2OIn 2021, Hong, Weijie;Yuan, Lili;Ma, Yanping;Cui, Chao;Zhang, Haoyang;Yang, Shiyong;Sun, Wen-Hua published 《Resin transfer moldable fluorinated phenylethynyl-terminated imide oligomers with high Tg: structure-melt stability relationship》. 《Polymers (Basel, Switzerland)》published the findings. The article contains the following contents:

Phenylethynyl-terminated aromatic polyimides meet requirements of resin transfer molding (RTM) and exhibits high glass transition temperature (T_g) were prepared Moreover, the relationship between the polyimide backbones structure and their melting stability was investigated. The phenylethynyl-terminated polyimides were based on 4,4-(hexafluorosiopropylidene)-diphthalic anhydride (6FDA) and different diamines of 3,4-oxydianiline (3,4-ODA), m-phenylenediamine (m-PDA) and 2,2-bis(trifluoromethyl)benzidine (TFDB) were prepared These oligoimides exhibit excellent melting flowability with wide processing temperature window and low min. melt viscosities (<1 Pa·s). Two of the oligoimides display good melting stability at 280-290°C, which meet the requirements of resin transfer molding (RTM) process. After thermally cured, all resins show high glass transition temperatures (T_gs, 363-391°C) and good tensile strength (51-66 MPa). The cure kinetics studied by the differential scanning calorimetry (DSC), ¹³C NMR (¹³C NMR) characterization and d. functional theory (DFT) definitely confirmed that the electron-withdrawing ability of oligoimide backbone can tremendously affect the curing reactivity of terminated phenylethynyl groups. The replacement of 3,4-ODA units by m-PDA or TFDB units increase the electron-withdrawing ability of the backbone, which increase the curing rate of terminated phenylethynyl groups at processing temperatures, hence results in the worse melting stability. The experimental procedure involved many compounds, such as 3-(4-Aminophenoxy)aniline (cas: 2657-87-6) .

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. COA of Formula: C12H12N2O The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Wang, Qihua;Bai, Yongkang;Chen, Yu;Ju, Junping;Zheng, Fei;Wang, Tingmei published 《High performance shape memory polyimides based on π-π interactions》 in 2015. The article was appeared in 《Journal of Materials Chemistry A: Materials for Energy and Sustainability》. They have made some progress in their research.Safety of 3-(4-Aminophenoxy)aniline The article mentions the following:

A series of polyimides (PIs) with different chain structures were synthesized by a two-step method. The influences of chain conformations on their thermal and mech. properties were investigated by dynamic mech. anal., thermogravimetric anal., as well as by a universal testing machine. All PIs exhibited high glass transition temperature (>240 °C) and thermal decomposition temperature (>480 °C). Moreover, all these PIs could show shape memory properties more or less, especially ODA-BPDA with a shape recovery ratio (R_r) greater than 93%. The high value of R_r was mainly due to the existence of π-π interaction, a type of non-covalent interaction. The dependence of R_r on π-π interaction was investigated in detail by UV-vis spectroscopy. Finally, at. oxygen (AO) exposure experiments showed that the shape memory properties of ODA-BPDA were affected little by the erosion due to AO. To complete the study, the researchers used 3-(4-Aminophenoxy)aniline (cas: 2657-87-6) .

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. Safety of 3-(4-Aminophenoxy)aniline The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Zhou, Haoran;Yu, Weimiao;Qu, Chunyan;Liu, Changwei;Wang, Dezhi published 《Facile one-step synthesis of PI/Fe₃O₄ composite microspheres from poly(amic acid) triethylamine salts and Fe(III) ion》 in 2015. The article was appeared in 《Journal of Materials Science: Materials in Electronics》. They have made some progress in their research.Synthetic Route of C12H12N2O The article mentions the following:

Polyimide/magnetite composite microspheres were successfully prepared from poly(amic acid) triethylamine salts and Fe(III) ion via a simple one-step solvothermal process. The formation mechanism of the composite microspheres was explored. The morphol. and the structure of the samples were characterized. It was found that polyimide has successfully coated on the surface of the magnetite microspheres and penetrated throughout the crystals via an assembly process. And the magnetic and thermal properties were measured, the results showing that composite microspheres have excellent thermal stabilities and the saturation magnetization is 35.29 emu/g with PI content of 60 wt%.3-(4-Aminophenoxy)aniline (cas: 2657-87-6) were involved in the experimental procedure.

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. Synthetic Route of C12H12N2OEthers do have nonbonding electron pairs on their oxygen atoms, however, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Liu, Limin;Li, Jianying;Yan, Tao;Cai, Mingzhong published 《Novel preparation of poly(arylene ether sulfone amide)s via supported palladium-catalyzed carbonylative polymerization》. The research results were published in《Polymer Bulletin (Heidelberg, Germany)》 in 2020.Reference of 3-(4-Aminophenoxy)aniline The article conveys some information:

Two new aromatic diiodides with ether-sulfone linkages were synthesized via a 1-step procedure. Poly(arylene ether sulfone amide)s were synthesized by a supported Pd-catalyzed polycondensation of aromatic diiodides having ether-sulfone linkages, aromatic diamines, and CO. Polycondensation reactions were conducted in N,N-dimethylacetamide using a magnetic nanoparticles-bound Pd(II) complex [Fe₃O₄@SiO₂-2P-PdCl₂] as the catalyst and 1,8-diazabicycle[5,4,0]-7-undecene as the base at 120°, yielding poly(arylene ether sulfone amide)s having inherent viscosities of 0.43-0.77 dL/g. The resulting polymers were soluble in polar aprotic solvents and showed glass transition temperatures in the 204-265° range, with 10% weight losses occurring at temperatures >456° in N. Most of the polymers afforded transparent and tough films by solution-casting with tensile strengths of 71.8-82.2 MPa, Young’s moduli of 1.77-2.35 GPa, and elongations at break of 9.3-13.4%. More importantly, this supported Pd catalyst can facilely be separated from the product by simply using an external magnetic field and reused at least 7 times with almost consistent activity.3-(4-Aminophenoxy)aniline (cas: 2657-87-6) were involved in the experimental procedure.

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. Reference of 3-(4-Aminophenoxy)anilineEthers do have nonbonding electron pairs on their oxygen atoms, however, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Sugimoto, Yuka;Suzuki, Yasuhito;Matsumoto, Akikazu published 《Evaluation of heat resistance of metal-resin bonding using epoxy monoliths prepared with various epoxy resins and diamine curing agents》. The research results were published in《Nippon Setchaku Gakkaishi》 in 2020.Recommanded Product: 2657-87-6 The article conveys some information:

Epoxy monoliths with a co-continuous porous structure were produced by a thermosetting reaction using combinations oi 4 kinds of epoxy resins, 9 kinds of diamine curing agents, and 2 kinds porogens (pore forming agents), and applied to dissimilar materials bonding between metals and engineering plastics. An epoxy monolith was prepared on a stainless or copper plate, and a polycarbonate or poly (phenylene sulfide) plate was thermally welded to prepare a bonding test piece. The heat resistance of the epoxy monolith bonding systems used in this study was evaluated from the results of the tensile shear test before and after heat treatment. In addition, the thermogravimetric anal. of the monolith materials revealed the thermal decomposition behavior of the cured epoxy. Based on these results, the effects of the structure and the number of functional groups of the epoxy resins and the diamine curing agents on the porous structure bonding strength, and heat resistance of the epoxy monoliths were discussed. To complete the study, the researchers used 3-(4-Aminophenoxy)aniline (cas: 2657-87-6) .

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. Recommanded Product: 2657-87-6 The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Reference of 3-(4-Aminophenoxy)aniline《High-performance polymers adapted to facile melt processing through structure design of benzocyclobutene-containing precursors》 was published in 2021. The authors were Jin, Ke;Sun, Qiangsheng;Feng, Yudi;Guo, Jia;Wang, Changchun, and the article was included in《European Polymer Journal》. The author mentioned the following in the article:

High-performance polymeric materials with good processability and enhanced performance (higher thermal stability and mech. strength, higher glass transition temperature (T_g) and lowered thermal expansion) have long been explored by scientists and engineers. The present study demonstrated a new way to fabricate high-performance polymers, such as polyarylamide (traditional polyarylamides can’t be processed by melt processing due to the lack of viscous flow temperature before thermal decomposition), with excellent processability via a facile two-step process, i.e. low-temperature melt processing and a subsequent in-situ thermal curing. Through designing the structure of the BCB-containing precursors, we can well control the m.p. and curing temperature, thus adjust the melt processing temperature and curing temperature of the polymers. In our experiments, the temperature difference between precursor m.p. and polymerization temperature can be over 200°C, providing wide processing window and long storage lifetime. Besides, these precursors also possess excellent solubility in organic solvents, which endow them with the possibility of solution or melt processing, as illustrated by the representative precursor, DODA-BCB. The obtained polymer resin films show good thermal stability (T_d,5% > 410°C), high glass transition temperatures (T_g > 240°C) and good mech. strength (storage modulus > 1.8 GPa). Further studies on the thermal expansion behavior of the films reveal the thermal contracting feature of p-3,4′-ODA-BCB, the mechanism has been discussed in detail using DFT calculations, VT-FTIR and TMA. And 3-(4-Aminophenoxy)aniline (cas: 2657-87-6) was used in the research process.

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. Reference of 3-(4-Aminophenoxy)anilineEthers do have nonbonding electron pairs on their oxygen atoms, however, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Jin, Ke;Sun, Qiangsheng;Feng, Yudi;Guo, Jia;Xu, Jiangtao;Wang, Changchun published 《Significant Influence of Alkyl Substituents in the Alicyclic Rigid Backbone on Solubility and Thermal Stability of Polyarylamide Copolymers》 in 2021. The article was appeared in 《ACS Applied Polymer Materials》. They have made some progress in their research.Safety of 3-(4-Aminophenoxy)aniline The article mentions the following:

Incorporation of alicyclic structural units in a polymer backbone holds great promises for preparing polyarylamides with superior phys. properties (solubility, optical transparency, thermal stability, etc.). In this study, the alicyclic-containing building block, tetraethyl-substituted dibenzocyclooctadiene (TE-DBCOD), was integrated into the backbone of polyarylamides through a unique diamine monomer, TE-DBCOD-NH₂. The TE-DBCOD-containing polyarylamides were synthesized first through polycondensation with different contents of TE-DBCOD units. Compared to the control polymers without DBCOD or Et side-chain units, the polyarylamides with TE-DBCOD units showed better solubility in less polar solvents (m-cresol, pyridine, and tetrahydrofuran) and higher glass transition temperature (T_g), which provides an opportunity to fabricate polyarylamides with both improved solubility and T_g. Meanwhile, we also prepared the poly(amide-imide)s with TE-DBCOD by a two-step method for comparison. In contrast, the aromatic poly(amide-imide)s showed better solubility and lower T_gs than the corresponding aromatic poly(amide-imide)s without TE-DBCOD contents, which revealed the complex influence of structure parameters on different polymers. Addnl., the synthesized polymers possessed high thermal stability (5% weight loss temperature > 440°C) verified by thermogravimetric anal. The strategy of introducing short side chains in polymer backbones opens a window for exploration of polymers with improved solubility and increased T_g simultaneously, which also facilitates the understanding of the structure-property relationship of polymers with alicyclic structural units. And 3-(4-Aminophenoxy)aniline (cas: 2657-87-6) was used in the research process.

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. Safety of 3-(4-Aminophenoxy)aniline The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Zaitsev, B. A.;Kleptsova, L. G.;Shvabskaya, I. D. published 《Heat-resistant network copolymers based on rolivsans modified with aromatic diamines》 in 2017. The article was appeared in 《Russian Journal of Applied Chemistry》. They have made some progress in their research.Application In Synthesis of 3-(4-Aminophenoxy)aniline The article mentions the following:

Thermochem. transformations of rolivsans with aromatic diamines were studied by IR and NMR (¹H, ¹³C) spectroscopy and by dynamic mech., thermal, and elemental anal. The heat resistance of rolivsans is considerably enhanced by their modification with small additions (10±5%) of an aromatic diamine with curing at 150-300 (320)°C. The experimental procedure involved many compounds, such as 3-(4-Aminophenoxy)aniline (cas: 2657-87-6) .

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. Application In Synthesis of 3-(4-Aminophenoxy)anilineEthers do have nonbonding electron pairs on their oxygen atoms, however, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Winters, Jonas;Dehaen, Wim;Binnemans, Koen published 《γ-Valerolactone-based organic electrolyte solutions: a benign approach to polyaramid dissolution and processing》. The research results were published in《Green Chemistry》 in 2020.Computed Properties of C12H12N2O The article conveys some information:

Polyaramids are polymers that consist of aromatic repeating units that are connected via amide bonds. From their chem. structure, an extensive intermol. hydrogen-bond network arises, which makes them very difficult to dissolve in conventional organic solvents. A commonly used solvent system is N-methylpyrrolidone (NMP) mixed with CaCl2, where the chloride ions can break up the intermol. hydrogen bonds. Organic electrolyte solutions (OESs) are proposed as a green alternative solvent system. OESs are created by diluting ionic liquids (ILs) with an organic co-solvent. gamma-Valerolactone (GVL) was selected as a green, renewable co-solvent. The solubility in OESs was tested for three commonly produced polyaramids: poly-p-phenylene terephthalamide (PPTA), poly-m-phenylene isophthalamide (PMIA) and copoly(p-phenylene/3,4′-diphenylether terephthalamide) (ODA/PPTA). Some OESs were excellent solvents for PMIA and ODA/PPTA, with [C8MIm][Cl]/GVL yielding solubilities as high as 23.7 wt% and 7.4 wt%, resp., rivalling the currently used solvent systems. PPTA, on the other hand, was completely insoluble in all OESs. GVL was found to work synergistically with ILs, while acetonitrile and ethanol acted as a non-solvent and anti-solvent, resp. OESs made from GVL and imidazolium ILs were suitable solvents for fiber spinning, as was demonstrated using a 3D-printed spinning setup. The Kamlet-Taft parameters of the OES were determined from which boundary conditions for dissolution To complete the study, the researchers used 3-(4-Aminophenoxy)aniline (cas: 2657-87-6) .

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. Computed Properties of C12H12N2OEthers do have nonbonding electron pairs on their oxygen atoms, however, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Synthetic Route of C12H12N2O《Studies of formation mechanism, structure, and properties of network copolymers obtained by cocuring of rolivsan thermosetting resins with aromatic diamines》 was published in 2019. The authors were Zaitsev, B. A.;Kleptsova, L. G.;Shvabskaya, I. D., and the article was included in《International Journal of Polymer Science》. The author mentioned the following in the article:

Rolivsan thermosetting resins (ROLs) demonstrate high glass-transition temperatures and excellent processability. In our work, high-temperature properties of ROLs were significantly improved using a novel technique for structural and chem. modification of microheterogeneous network polymers. This technique involves, among other procedures, cocuring of rolivsan resins with aromatic diamines (ADA). The most noticeable increase in storage moduli and glass transition temperatures (T_g) of these copolymers was achieved when ROLs were modified with 10-15 weight% of ADA and the resulting blends were subjected to thermal treatment in air in the temperature range 180 to 320°C for several hours. FTIR, ¹³C NMR spectroscopy, and dynamic mech. and thermal analyzes were used for studying the structure and properties of the obtained products. It was demonstrated that the mechanism of formation of ROL-ADA copolymers includes the following high-temperature reactions: (i) three-dimensional radical copolymerization of unsaturated ROL components and (ii) cleavage of heat-sensitive methacrylate crosslinking units inside the polymer network. The second process is accompanied by formation of pending units of methacrylic acid and methacrylic anhydride, which participate in condensation reactions with ADA.3-(4-Aminophenoxy)aniline (cas: 2657-87-6) were involved in the experimental procedure.

3-(4-Aminophenoxy)aniline is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. Synthetic Route of C12H12N2O The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem