Category: 118-45-6

Li, Rongrong; Yao, Ganbing; Xu, Hui; Zhao, Hongkun published the artcile< Solid-Liquid Equilibrium and Phase Diagram for the Ternary 4-Chlorophthalic Anhydride + 3-Chlorophthalic Anhydride + Ethyl Acetate System>, Application of C8H3ClO3, the main research area is phase diagram ternary system chlorophthalic anhydride isomer ethyl acetate; solubility ternary system chlorophthalic anhydride isomer ethyl acetate.

The mutual solubility for ternary system of 4-chlorophthalic anhydride + 3-chlorophthalic anhydride + Et acetate was measured exptl. at different temperatures Four isothermal phase diagrams of the system were constructed based on the measured solubility At each temperature, there existed two pure solid phases, pure 4-chlorophthalic anhydride and pure 3-chlorophthalic anhydride, which were identified by the Schreinemakers’ wet residue method. When temperature decreases, the crystallization regions of 4-chlorophthalic anhydride and 3-chlorophthalic anhydride increase. At a certain temperature, the crystallization region of 4-chlorophthalic anhydride is smaller than that of 3-chlorophthalic anhydride.

Journal of Chemical & Engineering Data published new progress about Phase diagram. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Application of C8H3ClO3.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Huang, Xiao-hua; Huang, Wei; Zhou, Yong-feng; Yan, De-yue published the artcile< Synthesis and characterization of highly soluble aromatic polyimides>, Formula: C8H3ClO3, the main research area is heat resistant soluble aromatic polyimide polythioether polysulfone.

Two highly soluble aromatic polyimides were prepared from 4,4′-diamino-3,3′-di-tert-butyldiphenylmethane (MBTBA) and 3,3′,4,4′-diphenyl sulfide tetracarboxylic dianhydride (DTDA) or 3,3′,4,4′-diphenyl sulfone tetracarboxylic dianhydride (DSDA). Both polymers showed excellent solubility in common solvents, such as chloroform, THF and dioxane, at room temperature The number-average mol. weight was 6.0 × 104 and 8.3 × 104 according to gel permeation chromatog. relative to polystyrene standards, and the polydispersity index was 1.80 and 1.82, resp. The glass-transition temperatures were 286° and 314° (or 315° and 358°) as measured by differential scanning calorimetry (or dynamic mech. anal.). The 5% weight loss temperature of both polymers was near 490° in N2 atm. as determined using thermogravimetric anal. The results indicated that the tert-Bu pendent groups reduced the interactions among the polymer chains, and the thioether or sulfone moiety provided flexibility, thus improving the solubility in organic solvents without the loss of thermal stability. Transparent and flexible films of the polyimides were obtained via solution casting. The MBTBA-DTDA membrane had higher storage modulus than the MBTBA-DSDA membrane.

Chinese Journal of Polymer Science published new progress about Complex modulus, tan δ. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Formula: C8H3ClO3.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Zweig, Arnold; Epstein, Martin published the artcile< 3-Chlorophthalic anhydride through chlorination of phthalic anhydride>, Recommanded Product: 5-Chloroisobenzofuran-1,3-dione, the main research area is chlorophthalic anhydride; phthalic anhydride chlorination.

Monochlorination of molten phthalic anhydride in the presence of FeCl3 proceeds with only a small preference (55:45) for 4-chlorophthalic anhydride over 3-chlorophthalic anhydride. Under the same conditions both monochlorophthalic anhydrides are chlorinated at rates comparable to that of phthalic anhydride itself. When 1 mol of Cl is taken up by 1 mol of phthalic anhydride, a mixture of starting material and mono- and dichlorophthalic anhydrides is obtained together with traces of the more highly chlorinated phthalic anhydrides. Distillative separation of 3-chlorophthalic anhydride from the lower boiling 4-chlorophthalic anhydride can be readily achieved on a moderately efficient column. Convenient preparation of pure 3-chlorophthalic anhydride through distillation of chlorinated phthalic anhydride mixtures is impeded by the nearly identical b.ps. of 3-chlorophthalic anhydride and 4,5-dichlorophthalic anhydride. The latter is formed to the extent of 1/6 of the dichlorophthalic anhydride fraction of the chlorinated mixtures

Journal of Organic Chemistry published new progress about Chlorination. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Recommanded Product: 5-Chloroisobenzofuran-1,3-dione.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Wu, Mingxi; Wang, Mingjin; Cao, Song published the artcile< Copper(I)-catalyzed trifluoromethylation of phthalic anhydride derivatives with (trifluoromethyl)trimethylsilane>, Electric Literature of 118-45-6, the main research area is phthalic anhydride fluoromethylsilane trifluoromethylation copper catalyst; naphthalic anhydride fluoromethylsilane trifluoromethylation copper catalyst; fluoromethylhydroxyisobenzofuran lactone preparation; fluoromethylhydroxynaphthopyranone lactone preparation.

An efficient copper-catalyzed trifluoromethylation of substituted phthalic anhydrides using (trifluoromethyl)trimethylsilane (Me3SiCF3) as a nucleophilic trifluoromethylating reagent in the presence of 1,10-phenanthroline and KF, followed by quenching the reaction mixture with water was developed. A possible mechanism was suggested.

Chinese Journal of Chemistry published new progress about Anhydrides, cyclic Role: RCT (Reactant), RACT (Reactant or Reagent). 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Electric Literature of 118-45-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Mushtaq, Nafeesa; Sidra, Lala Rukh; Chen, Guofei; Tang, Yongmei; Xu, Lubo; Fang, Xingzhong published the artcile< Synthesis of cardo containing asymmetric poly(ether-naphthalimide-phthalimide)s>, Synthetic Route of 118-45-6, the main research area is cardo asym polyethernaphthalimidephthalimide.

A series of cardo based asym. polyimides containing bulky rigid naphthalimide and phthalimide groups were prepared from asym. monomer bishaloimide and bisphenols by solution polycondensation. Bishalo(naphthalimide-phthalimide) monomers containing different terminal leaving groups (Cl, F, NO2) were synthesized, and the reactivity difference of these monomers was compared for the successful synthesis of polyimides. The inherent viscosities of the polyimides were in the range 0.51 – 0.60 dL g-1 in N-methyl-2-pyrrolidone at 30 °C. These polyimides demonstrated good organosoly. and mech. properties with tensile strengths of 93 – 120 MPa, tensile moduli of 3.5 – 5.3 GPa and elongations at break of 2.8% – 4.3%. The polyimides showed high glass transition temperatures (Tg) ranging from 330 to 363 °C. The 10% weight loss (T10%) of asym. polyimides reached 436 – 500 °C in nitrogen and 417 – 476 °C in air. The water uptake of the polyimides was in the range 0.35% – 0.72%. © 2017 Society of Chem. Industry.

Polymer International published new progress about Cardo polymers, polyether-polyimides Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Synthetic Route of 118-45-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Wei, Haibing; Pei, Xueliang; Fang, Xingzhong published the artcile< Comparative study on polyimides from isomeric 3,3'-, 3,4'-, and 4,4'-linked bis(thioether anhydride)s>, HPLC of Formula: 118-45-6, the main research area is polyimide isomeric thioether anhydride preparation thermal mech property.

Three isomeric bis(thioether anhydride) monomers, 4,4′-bis(2,3-dicarboxyphenylthio) di-Ph ketone dianhydride (3,3′-PTPKDA), 4,4′-bis(3,4-dicarboxyphenylthio) di-Ph ketone dianhydride (4,4′-PTPKDA), and 4-(2,3-dicarboxyphenylthio)-4′-(3,4-dicarboxyphenylthio) di-Ph ketone dianhydride (3,4′-PTPKDA), were prepared through multistep reactions. Their structures were determined via Fourier transform IR, NMR, and elemental anal. Three series of polyimides (PIs) were prepared from the obtained isomeric dianhydrides and aromatic diamines in N-methyl-2-pyrrolidone (NMP) via the conventional two-step method. The PIs showed excellent solubility in common organic solvents such as chloroform, N,N-dimethylacetamide, and NMP. Their glass transition temperatures decreased according to the order of PIs on the basis of 3,3′-PTPKDA, 3,4′-PTPKDA, and 4,4′-PTPKDA. The 5% weight loss temperatures (T5%) of all PIs in nitrogen were observed at 504-519 °C. The rheol. properties of isomeric PI resins based on 3,3′-PTPKDA/4,4′-oxydianiline/phthalic anhydride showed lower complex viscosity and better melt stability compared with the corresponding isomers from 4,4′- and 3,4′-PTPKDA. In addition, the PI films based on three isomeric dianhydrides and on 2,2′-bis(trifluoromethyl)benzidine had a low moisture absorption of 0.27-0.35%. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about Absorption (water). 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, HPLC of Formula: 118-45-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Li, Rongrong; Yang, Zhipeng; Xu, Hui; Zhao, Hongkun published the artcile< Measurement and calculation of solid-liquid phase equilibrium for ternary 4-chlorophthalic anhydride + 3-chlorophthalic anhydride + acetone system>, Recommanded Product: 5-Chloroisobenzofuran-1,3-dione, the main research area is chlorophthalic acetone ternary system solid liquid phase equilibrium.

The solid-liquid phase equilibrium for ternary system of 4-chlorophthalic anhydride + 3-chlorophthalic anhydride + acetone was measured at different temperatures and the mutual solubility was obtained. Four isothermal phase diagrams were constructed according to the exptl. solubility There existed two pure solid phases at each temperature in the studied system, pure 4-chlorophthalic anhydride and pure 3-chlorophthalic anhydride, which were identified by the wet residue method of Schreinemakers’. The crystallization regions of the pure two solids increase with the decrease in temperature The exptl. solid-liquid phase equilibrium for ternary system was calculated using the Wilson and NRTL models, and the corresponding binary interaction parameters were obtained according to the solubility of binary system. The calculated results agree well with the exptl. data at different temperature Both the models give acceptable results for the investigated systems.

Fluid Phase Equilibria published new progress about Crystallization. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Recommanded Product: 5-Chloroisobenzofuran-1,3-dione.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Zhang, Liang; Li, Meng; Gao, Qingyu; Chen, Chuanfeng published the artcile< Synthesis and properties of new organic luminescent materials based on halogen-substituted phthalimides>, Application In Synthesis of 118-45-6, the main research area is halogen phthalimide preparation crystal structure fluorescence phosphorescence spectral property.

A new kind of organic luminescent materials containing halogen-substituted phthalimide group and carbazole subunit have been conveniently synthesized. They not only showed strong aggregation-induced emission (AIE) effect, but also exhibited thermally activated delayed fluorescence (TADF) in films and crystallization-induced room-temperature phosphorescence (RTP) properties. Especially, RTP with marked afterglow for Br-AI-Cz was observed by naked eye, which could be used as the promising smart materials for the encryption application.

Youji Huaxue published new progress about Aggregation-induced emission. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Application In Synthesis of 118-45-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Im, Jeong Kyun; Yang, ByeongDo; Jeong, Ilju; Choi, Jun-Ho; Chung, Won-jin published the artcile< N-Chlorination-induced, oxidative ring contraction of 1,4-dimethoxyphthalazines>, Name: 5-Chloroisobenzofuran-1,3-dione, the main research area is dimethoxyphthalazine trichloroisocyanuric acid chlorination oxidative ring contraction; chlorophthalimide preparation.

A rarely explored oxidative ring contraction of electron-rich 1,2-diazine was described. Upon treatment with an electrophilic chlorinating reagent (TCICA), 1,4-dimethoxyphthalazines undergo an N-chlorination-induced ring contraction that was accompanied by the loss of one nitrogen atom. The scope of this unusual reactivity was examined with a range of 1,4-dimethoxyphthalazine derivatives In addition, a mechanism proceeding via a bicyclic species was proposed on the basis of an isolated reaction intermediate and DFT calculations

Tetrahedron Letters published new progress about Chlorination. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Name: 5-Chloroisobenzofuran-1,3-dione.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Yan, Jingling; Wang, Zhen; Gao, Lianxun; Ding, Mengxian published the artcile< Synthesis and properties of polyimides from isomeric bis(dicarboxylphenylthio)diphenyl sulfone dianhydrides>, Recommanded Product: 5-Chloroisobenzofuran-1,3-dione, the main research area is isomeric tetracarboxylic dianhydride polyimide polysulfone preparation property; permeability permselectivity oxygen nitrogen polyimide polysulfone.

4,4′-Bis(3,4-dicarboxyphenylthio)diphenyl sulfone dianhydride(4,4′-PTPSDA) and 4,4′-bis(2,3-dicarboxyphenylthio)diphenyl sulfone dianhydride(3,3′-PTPSDA) were synthesized from chlorophthalic anhydrides and bis(4-mercaptophenyl)sulfone. Their structures were determined via IR spectra, 1H NMR and elemental anal. A series of polyimides were prepared from isomeric PTPSDAs and aromatic diamines in 1-methyl-2-pyrrolidinone (NMP) via the conventional two-step method. Polyimides based on 4,4′-PTPSDA and 3,3′-PTPSDA have good solubility in polar aprotic solvents and phenols. The 5% weight-loss temperatures of isomeric polyimides were near 500 °C in N2. DMTA and DSC analyses indicated that the glass-transition temperatures of polyimides from 3,3′-PTPSDA are higher than those of polyimides from 4,4′-PTPSDA. The wide-angle X-ray diffraction showed that all polyimides are amorphous. The polyimides from 3,3′-PTPSDA showed higher permeability but lower permselectivity compared with those from 4,4′-PTPSDA.

Polymer published new progress about Elongation at break. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Recommanded Product: 5-Chloroisobenzofuran-1,3-dione.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics