29305-46-2

Upstream product

• 17057-04-4 N-(4-carboxyphenyl)maleimide 
• 108-31-6 maleic anhydride 
• 150-13-0 4-amino-benzoic acid 

Downstream Products

• 40349-49-3 methyl 4‐(2,5‐dioxo‐2,5‐dihydro‐1H‐pyrrol‐1‐yl)benzoate 
• 116569-55-2 4-maleimido-benzoic acid-[4-(tetrachlorocyclopentadienylidene-methyl)-phenyl ester] 
• 125371-41-7 2,2-bis[4-(4-maleimidobenzoyloxy)phenyl]hexafluoropropane 
• 327600-56-6 2,2-bis[4-(4-maleimidobenzoyloxy)phenyl]propane 
• 756902-08-6 N-[p-(2-furfuryloxycarbonyl)phenylene]maleimide 
• 58174-51-9 N-[4-(azidocarbonyl)phenyl]maleimide 
• 857680-49-0 5-(4-(2,5-dioxo-2H-pyrrol-1⁽⁵⁾-yl)benzamido)isophthalic acid 
• 927824-76-8 N-(tert-butyloxycarbonyl)-1,1,1-tris(4-maleimidobenzoyloxymethyl)methylamine 
• 927824-82-6 1,1,1-tris(4-maleimidobenzoyloxymethyl)methylamine 
• 309263-85-2 N-(4-formylphenoxycarbonylphenyl)maleimide 
• 138896-00-1 N,N'-1,4-phenylenebis[4-(2,5-dihydro-2,5-dioxo-1H-pyrrol-1-yl)]benzamide 

Relevant academic research and scientific papers

Synthesis of 4,4′-Bis[4-(2,5-dioxo-2,5-dihydro-1H-pyrroll-1-yl)-phenylcarbonylamino]-3,3′-dichlorodiphenylmethane and 1,4-Bis{2-[4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-phenylcarbonyloxy]ethoxy}benzene

4,4′-Bis[4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)phenylcarbonylamino]-3,3′-dichlorodiphenylme-thane has been obtained by the reaction of 4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)benzoyl chloride with 4,4′-diamino-3,3′-dichlorodiphenylmethane. 1,4-Bis[2-(4-

Thermal degradation kinetics and thermodynamics of maleimide-sytrene based alternating copolymer: A comparative investigation of monomer and polymer structures

Thermal degradation of N-(4-(3-Thienyl methylene)-oxycarbonylphenyl) maleimide monomer, MT and its copolymer with styrene, P(MT-alt-St) were investigated comparatively using TG and DTA methods. Degradation of monomer takes place in three stages which correspond to removal of thiophene, aliphatic groups and the rest of structural decomposition respectively. Degradation of the copolymer occurs in two stages. Thiophene and aliphatic groups decompose simultaneously at the first degradation stage. The main polymeric chain remains intact. The second stage is related to the rest of structural decomposition. Activation energy values of these reactions were calculated by using Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) methods. In order to determine the effective reaction model and calculate thermodynamic parameters, these methods were combined with modeling equations. It was found that the first degradation stages of monomer and copolymer show good harmony with diffusion model (D1), whereas nucleation and growth model (A2) is effective for the second decomposition stage of the monomer.

Preparation and characterization of new carrier drug polymers based maleimide and its drug release behaviour

In this work, two new drug substituted monomers and new homogenous and heterogeneous polymers were synthesized loaded with medicinal properties to extend the controlled drug. The first step includes preparation of compound (F1) via reaction of maleic anhydride with 4-aminobenzoic acid. Then compound (F1) was converted to its corresponding acyl chloride derivative which reacted with amino drugs (sulfadiazine, chlordiazepoxide) afforded (F2 and F3) monomers. Homogeneous polymers (F8 and F9) prepared through polymerization reaction of free radicals of the monomers (F2 and F3) under nitrogen using methyl ethyl ketone peroxide (MEKP) as initiator. Heterogeneous polymers (F14 and F15) prepared through polymerization reaction of free radicals of the monomers (F2 and F3) separately with acrylic acid under nitrogen using methyl ethyl ketone peroxide (MEKP) as initiator. All these prepared monomers and polymers were characterized by FT-IR and 1H NMR, 13C NMR spectroscopies. Controlled drug release and swelling % was studied in different pH values at 37 oC. Intrinsic viscosities were measured at 25 oC with Ostwald viscometer and applied the characteristic of solubility for these polymers.

Thermosetting compounds

Provided is a thermosetting compound that has satisfactory solvent solubility and can be rapidly cured by a heat treatment to form a cured product having extreme heat resistance. The thermosetting compound according to the present invention is represented

Synthesis and evaluation of a novel fluorescent chemosensor for glutathione based on a rhodamine B and N-[4-(carbonyl) phenyl]maleimide conjugate and its application in living cell imaging

A novel rhodamine B spirolactam derivative bearing an N-[4-(carbonyl)phenyl] maleimide moiety (L1) was designed, synthesized and structurally characterized to develop a chemosensor. The interactions of L1 with amino acids and metal ions were studied by UV–vis absorption and fluorescence spectroscopy. L1 exhibited a highly sensitive and selective turn-on fluorescence response toward glutathione (GSH) over other biological species in EtOH/HEPES (3:2, v/v, 0.1?mM, pH 7.34) solution. The detection limit of GSH by L1 was 0.219?μM. Intracellular imaging applications demonstrated that L1 can be used as a fluorescent probe for the detection of GSH in HepG-2 and HUVEC cells.

Maleimide copolymers containing azobenzene moieties-synthesis and study of liquid crystalline and optical properties

New reactive copolymers have been synthesized by copolymerization of two functional N-substituted-maleimides with styrene. These copolymers, with aldehyde and carboxyl functional groups, were further chemically modified with p-aminoazobenzene. After verification of the chemical structures by IR and 1H-NMR spectroscopy, the copolymers were characterized by solubility, X-ray diffraction measurements and their thermal stability was controlled by thermogravimetrical analysis (TGA). The thermal and thermotropic properties were investigated using polarizing optical microscopy (POM) and differential scanning calorimetry (DSC). A comparative study of the photoisomerization in solution and thermal recovery characteristics of azo copolymers vs. the corresponding maleimide model compound has been performed.

Novel antimicrobial organic thermal stabilizer and co-stabilizer for rigid PVC

Biologically active N-benzoyl-4-(N-maleimido)-phenylhydrazide (BMPH) was synthesized and its structure was confirmed by elemental analysis and various spectral tools. It was examined as a thermal stabilizer and co-stabilizer for rigid poly (vinyl chloride) at 180°C in air. Blending BMPH with reference samples in different ratios greatly lengthens the thermal stability value and improves the extent of discoloration of PVC. TGA confirmed the improved stability of PVC in presence of the investigated organic stabilizer. GPC measurements were done to investigate the changes occurred in the molecular masses of the degraded samples of blank PVC and PVC in presence of the novel stabilizer. BMPH showed good antimicrobial activity towards two kinds of bacteria and two kinds of fungi.

Bismaleimide monomers with various structures and polyaspartimides

A series of bismaleimide monomers with various structures were synthesized by the reaction of bisphenols or diamines with 3 or 4- maleimidobenzoyl chloride. The reaction of these bismaleimides with aromatic diamines (Michael addition) yielded polyaspartimides. The monomers and polymers were characterized by FTIR and 'H-NMR spectroscopy and elemental analysis. Thermal characterization of monomers and polymers was accomplished by differential scanning calorimetry and dynamic thermogravimetric analysis. Some of the mechanical properties of the films based on these polymers were studied.

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.