Category: 2657-87-6

Acar, Oktay;Varis, Serhat;Isik, Tugba;Tirkes, Seha;Demir, Mustafa M. published 《Synthesis and characterization of novel high temperature structural adhesives based on nadic end capped MDA-BTDA-ODA copolyimide》. The research results were published in《Materials Research Express》 in 2018.Product Details of 2657-87-6 The article conveys some information:

A series of novel copolyimide structural adhesives were synthesized using 4,4′-diaminodiphenyl- methane (MDA), 3,4′-oxydianiline (ODA) and 3,3′,4,4′-benzophenonetetracarboxylic acid dianhydride (BTDA) as co-monomers, and nadic anhydride as an end cap reagent. The adhesives with different MDA and ODA contents were examined in terms of their structure, thermal stability, mech. properties, and adhesive performance. They have glass transition temperatures (Tg) about 400 °C, with thermal stability up to 500 °C. The effect of diamine monomer compositions on adhesion performance and processability of the copolyimides were studied. The copolyimides exhibited adhesion strength up to 16.3 MPa at room temperature Nadic end capped MDA-BTDA-ODA copolyimide resins gained adjustable and controllable processability with the addition of ether bridged aromatic segments. The copolyimide adhesive with equimolar composition of MDA:ODA is distinguished form the both com. PMR-15 and LARC RP-46 polyimides in terms of its better processability and mech. performance. 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. Product Details of 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

Duan, Chunjian;Cui, Yu;Wang, Chao;Tao, Liming;Wang, Qihua;Xie, Hai;Wang, Tingmei published 《High temperature tribological properties of thermosetting polyimide》 in 2017. The article was appeared in 《Mocaxue Xuebao》. They have made some progress in their research.Safety of 3-(4-Aminophenoxy)aniline The article mentions the following:

Thermosetting polyimide oligomers with different diamines (isomers) was synthesized with 3,3′,4,4′-biphenyltetracarboxylic dianhydride (s-BPDA), 4,4′-diaminodiphenyl ether (4,4′-ODA), 3,4′-diaminodiphenyl ether (3,4′-ODA) and 4-phenylethynylphthalide (4-PEPA). Furthermore, dry sliding tests were performed at 25°C, 100°C, 200°C, 250°C, 300°C and 350°C on a ball-on-disk wear tester. Mechanisms of friction and wear were studied in detail by scanning electron microscope and energy dispersive X-ray spectroscopy. At elevated temperature, exptl. results demonstrated that the wear rate increased first, then decreased and finally increased. However, average coefficient of friction showed a tendency to plummet with temperature range from 25°C to 350°C. This trend was attributed to changes in the mech. properties of the polymer surface. The wear mechanisms at elevated temperatures were different. At 25 and 100°C, fatigue wear and abrasive wear prevailed. From 100°C to 200°C, a dense of transfer film generated and the thickness increased due to adequate shearing motion of mol. chain. Hence, mild abrasive wear played a major role. Above 250°C, wear rate rapidly increased with damage of interaction between the mol. chain and polyimide was peeled on worn surface under the lasted load, adhesive wear was dominant. As a general guideline, higher ambient temperature rendered a greater wear rate. 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. 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

Choi, Young Chul;Kim, Min Su;Ryu, Kyoung Moon;Lee, Sang Hoon;Jeong, Young Gyu published 《Poly(azomethine ether)-derived carbon nanofibers for self-standing and binder-free supercapacitor electrode material applications》. The research results were published in《Polymers for Advanced Technologies》 in 2020.Name: 3-(4-Aminophenoxy)aniline The article conveys some information:

We report the microstructure and electrochem. performance of poly(azomethine ether) (PAME)-derived carbon nanofibers (CNFs), which were fabricated by a facile two-step process of electrospinning and carbonization, as self-standing and binder-free supercapacitor electrode materials. The SEM images showed that the average diameter decreased noticeably from ∼293.9 nm of as-spun nanofibers to ∼150.3 nm of CNFs after the carbonization at 1000°C. The EDS, XPS, Raman, and XRD analyses demonstrated that PAME-derived CNFs have a nitrogen self-doped graphitic structure. Accordingly, PAME-derived CNFs were characterized to have relatively high elec. conductivity of ∼3.1 S/cm and excellent wettability to water. The cyclic voltammetry and galvanostatic charge/discharge tests revealed that PAME-derived CNFs have a high specific capacitance of 298 F/g at 0.3 A/g, energy d. of 3.3 to 13.9 Wh/kg, power d. of 37.5 to 250.0 W/kg, and capacity retention of ∼94% after 1000 cycles.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. Name: 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

Cao, Kaikai;Liu, Yufeng;Yuan, Feng;Yang, You;Wang, Jin;Song, Zhicheng;Li, Zhongliang;Wu, Wei;Jiang, Mengjin;Yang, Jun published 《Preparation and properties of an aromatic polyamide fibre derived from a bio-based furan acid chloride》 in 2021. The article was appeared in 《High Performance Polymers》. They have made some progress in their research.COA of Formula: C12H12N2O The article mentions the following:

A high-mol.-weight aromatic polyamide resin incorporating furan-rings (f-resin) was prepared by low-temperature solution polycondensation of bio-based 2,5-furandiformyl chloride and 3,4′-diaminodiphenyl ether, in N,N-dimethylacetamide. Further, an aromatic polyamide fiber containing furan-rings (f-fiber) was obtained from the fresin by dry-jet wet spinning, and its structure and properties were investigated. The prepared f-resin showed good solubility and possessed good spinnability in solution The mech., heat-resistance, and flame-retardant properties of the f-fiber were found to be excellent – comparable to or exceeding those of meta-aramid fiber (m-fiber). In addition, the furan acid chloride monomer is bio-based and is derived from abundant resources, unlike petroleum-based monomers. Therefore, f-fiber has good potential and broad application prospects as an environment-friendly and sustainable high-performance material. 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. 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

Duan, Chunjian;Yuan, Dongming;Yang, Zenghui;Li, Song;Tao, Liming;Wang, Qihua;Wang, Tingmei published 《High wear-resistant performance of thermosetting polyimide reinforced by graphitic carbon nitride (g-C₃N₄) under high temperature》 in 2018. The article was appeared in 《Composites, Part A: Applied Science and Manufacturing》. They have made some progress in their research.Reference of 3-(4-Aminophenoxy)aniline The article mentions the following:

The two-dimensional (2D) material of graphitic carbon nitride (g-C₃N₄) has shown great promise for tribo-materials due to special mol. structure. In this work, we report an effective approach to enhance anti-wear of thermosetting polyimide (TPI) by filling with g-C₃N₄ under high temperature TPI composite (TPT-1) and g-C₃N₄ were firstly prepared Then, friction and wear behavior of TPT-1 was studied and comparatively evaluated with neat resin from room temperature to 350 °C. As a result, the wear resistance of TPI was able to significantly improve and a much lower wear rate (7.29 × 10^-7 mm³/N m) was achieved at 350 °C. Moreover, the mechanism of friction and wear demonstrated that a transfer film formed by introducing g-C₃N₄ with high E-modulus and hardness could effectively share the load with TPI and prevent further abrasion of resin in contact surfaces. This work could help researchers to design a new TPI tribo-material used at high temperature3-(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

Quality Control of 3-(4-Aminophenoxy)anilineIn 2015, Liu, Changwei;Qu, Chunyan;Wang, Dezhi;Feng, Hao;Liu, Ping;Zhang, Yang published 《Preparation and characterization of magnetic polyimide composite films copolymerized with aminophthalocyanine-coated Fe₃O₄ nanocrystals》. 《Journal of Materials Science: Materials in Electronics》published the findings. The article contains the following contents:

Iron-aminophthalocyanine-coated Fe₃O₄ hybrid nanospheres were synthesized by a one-step solvent-thermal method and followed by a catalytic hydrogenation route. To effectively utilize the excellent magnetic sensitivity of the functional aminophthalocyanine/Fe₃O₄ hybrid nanospheres, we have developed a novel series of flexible Fe₃O₄@polyimide (PI) composite films, which was prepared with various Fe₃O₄/FePc-NH₂ nanoparticle loadings (7, 15, 27 and 40 wt%). All of the flexible thin films have uniform morphol. without any agglomeration, which had been confirmed by the anal. of scanning electron microscope images. The above composite films, which have the higher saturation magnetization compared with that of the corresponding pure Fe₃O₄/PI films, illustrate that the excellent compatibility and homogeneous dispersion of the amine-coated Fe₃O₄ particles in the PI matrix based on the strong chemisorptions of PI onto the Fe₃O₄ surfaces and polymerization reactions between the amine groups and anhydride groups could significantly affect the magnetic properties of nanocomposite materials. The observed enhanced thermal stabilities, dramatic increased storage modulus and increased glass transfer temperatures (Tgs) of the magnetic films with increasing the particle loadings indicate that the composites could be a candidate to be used as high-performance absorbing materials.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. Quality Control 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

Yu, Ping;Zhang, Yan-li;Yang, Xue;Pan, Li-jing;Dai, Zhi-yao;Xue, Min-zhao;Liu, Yan-gang;Wang, Wei published 《Synthesis and characterization of asymmetric bismaleimide oligomers with improved processability and thermal/mechanical properties》 in 2019. The article was appeared in 《Polymer Engineering & Science》. They have made some progress in their research.Application In Synthesis of 3-(4-Aminophenoxy)aniline The article mentions the following:

Novel asym. bismaleimide (BMI) oligomers with different mol. weights and dianhydrides were designed and synthesized by 3,4′-oxydianiline (3,4′-ODA), 2,3,3′,4′-oxydiphthalic dianhydride (a-ODPA), and 2,3,3′,4′-biphenyltetracarboxylic dianhydride (a-BPDA). The chem. structures of BMI oligomers were confirmed by fourier transform IR spectrometry and gel permeation chromatog. X-ray diffraction exhibited broad peaks, suggesting amorphous structures. Heat flow curves of oligomers measured by differential scanning calorimeter displayed wide processing window due to low glass transition temperatures (T_g). BMI oligomers exhibited high solubility in common organic solvents. Particularly, the OD-BMI-1 oligomer exhibited excellent solubility of more than 50 wt% in DMAc solvent. T_g value and min. complex viscosity of OD-BMI-1 oligomer were only 121 °C and 8.1 Pa · s, resp. The cured BMI resins possess high thermal and thermal-oxidative stability. The T_g and the temperature of 5% weight loss in nitrogen were above 256 and 449 °C, resp., and the residual weight percentages at 800 °C were all >49%. Moreover, films made of BMI resins exhibited excellent mech. properties flexibility, as confirmed by photograph and DMA results of films. The elongation at break of the prepared films was found to be high (almost >9.6%). 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. Application In Synthesis 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

Electric Literature of C12H12N2O《Fine-bubble-based strategy for the palladium-catalyzed hydrogenation of nitro groups: Measurement of ultrafine bubbles in organic solvents》 was published in 2017. The authors were Mase, Nobuyuki;Nishina, Yuki;Isomura, Shogo;Sato, Kohei;Narumi, Tetsuo;Watanabe, Naoharu, and the article was included in《Synlett》. The author mentioned the following in the article:

Fine bubbles of hydrogen were employed as a new reaction medium for the autoclave-free gas-liquid-solid multiphase hydrogenation of nitro groups on a multigram scale. Furthermore, ultrafine bubbles were examined by nanoparticle-tracking anal. in organic solvents. 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. Electric Literature 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

HPLC of Formula: 2657-87-6《Effect of atomic oxygen on corrosion and friction and wear behavior of polyimide composites》 was published in 2020. The authors were Duan, Chunjian;He, Ren;Li, Song;Yang, Rui;Shao, Mingchao;Yang, Zenghui;Zhang, Nan;Yuan, Ping;Wang, Tingmei;Wang, Qihua, and the article was included in《Journal of Applied Polymer Science》. The author mentioned the following in the article:

Thermosetting polyimide (TPI) composite with better wear resistance and lower friction was obtained with various functional fillers after a high-low temperature cycle test. Nevertheless, taking into consideration of harsh space condition, the friction and wear behavior of TPI composite were also explored after at. oxygen (AO) irradiation It reveals that TPI composite behaves excellent properties against AO mainly attributed to g-C₃N₄ with more neg. electronegativity N than carbon atom. Moreover, the mechanism of friction and wear demonstrated that degradation caused by AO led to TPI composite surface with special “carpet-like” morphol. and this resulted into lubrication failure, especially when temperature was increased from 200 °C to 350 °C. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48441. 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. HPLC of Formula: 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

Ting, Kuang-Min;Xu, Jun;Guo, Bao-Hua published 《A novel vacuum-assisted method for fabricating flexible polyimide foams from 3,3′,4,4′-oxydiphthalic anhydride/4,4′-oxydianiline》 in 2017. The article was appeared in 《High Performance Polymers》. They have made some progress in their research.HPLC of Formula: 2657-87-6 The article mentions the following:

In this research, a novel method for fabricating flexible polyimide foams was developed. The foam was derived from the precursor synthesized via esterification of 3,3′,4,4′-oxydiphthalic anhydride and 4,4′-oxydianiline. After drying process, the remaining solvent acted as blowing agent. By adjusting the synthesis condition, low-mol. weight precursor was obtained and can be foamed under environment temperature With this novel type of precursor and vacuum-assisted foaming process, we could easily obtain any shape of foams, which was easy to process under relatively low temperature The foam could be imidized later in order to improve mech. strength. During the imidization process, in situ Fourier transform IR (FTIR) anal. was applied to analyze the variation of the imidization percentage with time. The d. of the foams could be adjusted from 12 to 30 kg m^-3 with uniform cell structure. Other properties of foams were also investigated. The glass transition temperature of the precursor was 70°C, which is obviously lower than that of the usual previously reported. The 5% and 10% weight loss temperatures of the finally imidized foam can reach up to 567°C and 593°C, resp. The foams belong to open cell structure with 98% open cell content. The limiting oxygen index of the foams varied from 38.6 to 41.9, depending on foam densities. The compressive strength of the foam ranged from 30.6 to 90.6 kPa when the d. changed from 15 to 28 kg m^-3. In addition, the in situ FTIR anal. was applied to analyze the imidization percentage of the foam during imidization process.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. HPLC of Formula: 2657-87-6Ethers 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