Category: esters-buliding-blocks

A comparative study of the application-based properties of hot melt adhesives (HMAs) formulated with different waxes was written by Robertson, Divann;van Reenen, Albert;Duveskog, Heidi;Brady, Fran. And the article was included in International Journal of Adhesion and Adhesives in 2021.Application In Synthesis of 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) This article mentions the following:

In this study, three chem. similar but morphol. different high melting hydrocarbon waxes having similar DSC peak melting temperatures were analyzed, and the influence of their mol. architectures on hot melt adhesive (HMA) performance, was evaluated. Selected waxes included each of the following types: Fischer Tropsch wax (FT), byproduct polyethylene wax (BPPE) and first intention polyethylene wax (FIPE). Both, ethylene-co-vinyl acetate (EVA) and metallocene catalyzed polyethylene (mPE) based HMAs were formulated. The high chain linearity of FT wax resulted in faster crystallization and faster adhesive set times as well as higher peel adhesion, shear adhesion and IOPP heat resistance temperatures Wax viscosities were in direct correlation with resultant HMA viscosities. EVA HMAs had longer set times and were more prone to thermal degradation upon prolonged exposure to elevated temperatures and was most pronounced for FIPE wax. Average traction force was dependent on the open time and wax/polymer combination with FT showing a smaller open time window for both EVA and mPE based HMAs. In the experiment, the researchers used many compounds, for example, 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8Application In Synthesis of 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate)).

2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Application In Synthesis of 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate)

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Syntheses and reactions of thiacyclanone-1,1-dioxides with diazoalkanes was written by Eistert, Bernd;Kueffner, Peter;Arackal, Thommen J.. And the article was included in Chemische Berichte in 1977.Category: esters-buliding-blocks This article mentions the following:

Thiacyclanone oxides I (m = 1, n = 1-5; m = n = 2, 3; m = 2, n = 3) reacted with RCH:N2 (R = H, Me) to give enol ethers II (R = H, Me, n = 1-5), epoxides III (R = H, Me, m = 1, n = 3; R = H: m = n = 2, 3; m = 2, n = 3), β-oxo sulfones IV (R = H, n = 3, 4; R = Me, n = 5) and ring-enlarged oxo sulfones V (R = Me: m = 1, n = 3, 4; m = n = 2; m = 2, n = 3; m = 3, n = 1, 2; R = H, m = n = 3), and VI, depending on the size of the ring and the positions of the CO and SO2 relative to each other. The enol ethers were easily hydrolyzed with mineral acids to form β-oxo sulfones I (m = 1, n = 1-5). In the presence of Lewis acids, N2:CHCO2Et gave II (R = CO2Et, n = 1, 2) and ring enlarged oxo esters V (R = CO2Et: m = 1, n = 1-5; m = 2, 3, n = 3; m = 3, 4, n = 1; m = 3, n =2). Only the γ-oxo sulfone I (m = n = 2) reacted with N2:CHCO2Et to give V (R = CO2Et, m = n = 2) as well as glycidic ester III (R = CO2Et, m = n = 2). The β-oxo esters were hydrolyzed and decarboxylated to give good yields of the oxo sulfones. In the ring expansion of oxo sulfones with RCH:N2 (R = Me, CO2Et), the diazo compound was preferably inserted between C-3 and C-4. In the experiment, the researchers used many compounds, for example, Methyl 2-(methylsulfonyl)acetate (cas: 62020-09-1Category: esters-buliding-blocks).

Methyl 2-(methylsulfonyl)acetate (cas: 62020-09-1) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

3D QSAR/CoMFA and CoMSIA Studies on Antileukemic Steroidal Esters Coupled with Conformationally Flexible Nitrogen Mustards was written by Kapou, Agnes;Benetis, Nikolas-P.;Durdagi, Serdar;Nikolaropoulos, Sotiris;Mavromoustakos, Thomas. And the article was included in Journal of Chemical Information and Modeling in 2008.Computed Properties of C10H13NO2 This article mentions the following:

Thirty-eight antileukemic steroidal esters possessing conformationally flexible nitrogen mustards were studied, and the 3D QSAR/CoMFA and CoMSIA methodologies were applied in order to derive the correlation between their structure and the in vivo antileukemic activity. These compounds show significantly reduced toxicity and possibly increased bioavailability compared to free nitrogen mustards and therefore constitute potent antileukemic drugs. Both the CoMFA and CoMSIA studies gave similar results indicating that the steric effect and the hydrophobic/hydrophilic balance especially in the steroidal part of the mols. probably determined their bioactivity. Of paramount interest is the observation that the orientation of the alkylating part of the SMEs toward the surface of ring B of the steroidal skeleton was related with increased activity. Concerning the steroidal part, the presence of hydrophobic groups in rings B and D was found to be important for enhanced activity. Enhancement of antileukemic potency is further observed if hydrophilic/H-bond acceptor groups are present at the positions 7 and 17 of the steroidal skeleton. Leapfrog simulations provided novel compounds which lead our future synthetic endeavor for obtaining SMEs with optimum bioactivity. In the experiment, the researchers used many compounds, for example, Ethyl 3-amino-4-methylbenzoate (cas: 41191-92-8Computed Properties of C10H13NO2).

Ethyl 3-amino-4-methylbenzoate (cas: 41191-92-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Computed Properties of C10H13NO2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Tin(II) chloride assisted synthesis of N-protected γ-amino β-keto esters through semipinacol rearrangement was written by Bandyopadhyay, Anupam;Agrawal, Neha;Mali, Sachitanand M.;Jadhav, Sandip V.;Gopi, Hosahudya N.. And the article was included in Organic & Biomolecular Chemistry in 2010.Related Products of 87694-53-9 This article mentions the following:

A facile synthetic route for the preparation of N-protected γ-amino β-keto esters from amino aldehydes and Et diazoacetate is described. The two component coupling is facilitated by tin(II) chloride followed by semipinacol rearrangement leading to the product in quant. yield. The reaction is mild, instantaneous and compatible with Boc-, Fmoc- and Cbz-amino protecting groups. In the experiment, the researchers used many compounds, for example, (S)-tert-Butyl (1-(methoxy(methyl)amino)-1-oxo-3-phenylpropan-2-yl)carbamate (cas: 87694-53-9Related Products of 87694-53-9).

(S)-tert-Butyl (1-(methoxy(methyl)amino)-1-oxo-3-phenylpropan-2-yl)carbamate (cas: 87694-53-9) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Related Products of 87694-53-9

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Characterization of the volatile compounds profile of the innovative broken oolong-black tea in comparison with broken oolong and broken black tea was written by Qi, Dandan;Miao, Aiqing;Chen, Wei;Wang, Wenwen;He, Xiugu;Ma, Chengying. And the article was included in Food Control in 2021.Product Details of 706-14-9 This article mentions the following:

Broken oolong-black tea is an innovative tea in China produced by applying characteristic manufacture crafts of broken oolong tea (bruising) and broken black tea (fermentation) on the manufacture of tea and it has both aroma features of broken oolong tea and broken black tea. The aim of this study is to investigate the differences of the volatile compounds among broken oolong-black, broken oolong and broken black tea made by Huangzhixiang (HZX) and Huangdan (HD) varieties by gas chromatog.-mass spectrometry (GC-MS) combined with chemometirc anal. The results suggested significant differences on both aroma quality and volatile compounds profile of three kinds of tea. Chemometric anal. showed that 47 and 52 differential volatile compounds were identified to distinguish three kinds of teas made by HZX and HD, resp., and the differences of volatile compounds among the tea samples were mostly quant. rather than qual. Besides, compounds with floral and fruity aroma increased in broken oolong-black tea compared with the others, while compounds with green aroma decreased in broken oolong-black tea. Quant. descriptive anal. of the aroma showed that sweet aroma was a new trait of broken oolong-black tea compared with broken oolong tea while green aroma disappeared compared with broken black tea. Our results provide the theor. and practical meaning for the application of two characteristic crafts from different tea manufacture on the innovation of tea manufacture In the experiment, the researchers used many compounds, for example, 5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9Product Details of 706-14-9).

5-Hexyldihydrofuran-2(3H)-one (cas: 706-14-9) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Product Details of 706-14-9

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Preparation and characterization of novel organic/inorganic hybrid nanoparticles containing an organotin core and a polystyrene shell was written by Jia, Yong-Guang;Jiang, Jian;Liu, Ling-Yan;Chang, Wei-Xing;Li, Jing. And the article was included in Journal of Applied Polymer Science in 2012.HPLC of Formula: 27249-90-7 This article mentions the following:

A series of well-defined nanoparticles containing an organotin core and a polystyrene shell were obtained by crosslinking of n-Bu₂SnO with amphiphilic styrene-[6-(4-vinylphenoxy)hexanoic acid] diblock copolymers with various mol. weights The amphiphilic copolymers were synthesized via reversible addition fragmentation chain transfer polymerization and hydrolysis. The structures of the nanoparticles were studied by the transmission electron microscopy, SEM, and XPS anal. The morphol. of the crosslinked copolymer showed individual nanoparticles with regularly spherical shape. And the nanoparticle diameters decreased with increasing number of organotin carboxylate units. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7HPLC of Formula: 27249-90-7).

Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.HPLC of Formula: 27249-90-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Markedly improved photo-oxidation stability of α form isotactic polypropylene with nodular morphology was written by Wu, Hao;Zhao, Ying;Su, Lili;Wang, Kezhi;Dong, Xia;Wang, Dujin. And the article was included in Polymer Degradation and Stability in 2021.Category: esters-buliding-blocks This article mentions the following:

Photo-oxidation degradation behaviors of isotactic polypropylene (iPP) films with different crystalline morphol. were investigated by artificially accelerated aging test. The α form iPP with nodular morphol. was obtained by quenching the melt and subsequent annealing process, and its photo-oxidation degradation behavior was compared with that of the melt-crystallized α form iPP sample. Fourier transform IR spectroscopy, gel permeation chromatog., differential scanning calorimetry, X-ray scattering, dynamic mech. anal. and at. force microscopy were utilized to characterize the microstructural variations of these two kinds of iPP films during photo-oxidation degradation process. The results showed that iPP film of nodular morphol. exhibits improved photo-oxidation stability compared with that of lamellar and spherulitic structure. UV-Vis spectra and O₂ diffusivity test of unexposed and aged samples demonstrated that the iPP film of nodular morphol. has higher transparency and lower O₂ diffusivity than that of lamellar morphol. Combining the microstructural anal. and surface morphol. observation, the improved photo-oxidation stability of “nodular” iPP was correlated with its higher UV light transparency, lower O₂ diffusion coefficient as well as the slower segmental mobility in the amorphous phase. In the experiment, the researchers used many compounds, for example, 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8Category: esters-buliding-blocks).

2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Preparation of porous materials by amphiphilic block copolymer polystyrene-block-poly (vinyl pyrrolidone) self-assembly was written by Li, Ying;Han, Han;Yuan, Jinfang. And the article was included in Gongneng Cailiao in 2016.HPLC of Formula: 27249-90-7 This article mentions the following:

A series of diblock copolymers, polystyrene-block-poly (vinyl pyrrolidone) (PSt-b-PVP), with different hydrophilic/hydrophobic ratios was prepared by reversible addition fragmentation chain transfer (RAFT) polymerization The structures and properties of the diblock copolymers were characterized by FT IR, 1H NMR and GPC. Different additives and a series of PSt-b-PVP with different hydrophilic/hydrophobic ratios dissolved in selective solvents. After solvent evaporation, the transparent film was obtained by rising with water. FESEM was used to study the morphol. and size of the polymer porous material. The influence of additives, solvent evaporation temperature, the solvents and the hydrophilic/hydrophobic ratios on pore size were also studied. The results show that if the structure that we uses contains -OH functional groups or the monomer itself is used as additive, the porous polymer formed would have smaller holes. Meanwhile, reducing the heat is benefit to reduce the size of porous. And if we can use the structure which hydrophilic/hydrophobic ratios is PSt₁₀₁-b-PVP₇₉, it would be more easier to form smaller porous. Besides, using volatile solvent can be good for the forming of porous. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7HPLC of Formula: 27249-90-7).

Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.HPLC of Formula: 27249-90-7

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Vanillin Alkanoates in the Synthesis of Hexahydrobenzacridine and Octahydroxanthene Derivatives was written by Kozlov, N. G.;Basalaeva, L. I.. And the article was included in Russian Journal of General Chemistry in 2005.COA of Formula: C12H14O4 This article mentions the following:

Cascade heterocyclization of 1,3-cyclohexanedione and dimedone with 2-naphthylamine and vanillin esters gave 2-methoxy-4-(alkyl-11-oxo-7,8,9,10,11,12-hexahydrobenz[a]acridin-12-yl)- and 2-methoxy-4-(alkyl-1,8-dioxo-2,3,4,5,6,7,8,9-octahydro-1H-xanthen-9-yl)phenyl esters of aliphatic (C₁-C₄) carboxylic acids. In the experiment, the researchers used many compounds, for example, 4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4COA of Formula: C12H14O4).

4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. COA of Formula: C12H14O4

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Pelletizing ultra-high molecular weight polyethylene (UHMWPE) powders with a novel tapered die and addition of high density polyethylene (HDPE): Processing, morphology, and properties was written by Yang, Huaguang;Yilmaz, Galip;Jiang, Jing;Xie, Jun;Langstraat, Thomas;Chu, Raymond;van Es, Martin;Garg, Priya;Turng, Lih-Sheng. And the article was included in Polymer in 2022.Related Products of 6683-19-8 This article mentions the following:

The extremely high mol. weight and mol. entanglement have rendered ultra-high mol. weight polyethylene (UHMWPE) superior properties. However, poor inter-particle diffusion makes it difficult to pelletize UHMWPE powders for easy processing/handling. A novel tapered die with air cooling was proposed to pelletize UHMWPE and a UHMWPE blend with 5 weight% high-d. polyethylene (HDPE) for compression molding and material characterization. The tensile strength of samples prepared with the tapered die outperformed those by the regular die or from virgin powders. The addition of HDPE further improved the tensile strength. Fourier transform IR spectroscopy (FTIR) revealed little chain scission and the lowest amount of oxidation from the tapered die. Intrinsic viscosity (IV) measurements confirmed the negligible chain scission and showed an increment in IV for the UHMWPE/HDPE blend. Multi-angle light scattering with size-exclusion chromatog. (SEC-MALS) indicated no change in the UHMWPE mol. weight distribution, but some crosslinking in the blend. Polarized optical microscopy (POM) showed that the HDPE and extrusion led to a finer UHMWPE domain size and better fusion between UHMWPE and HDPE. The combined effect of enhanced mol. chain diffusion, improved consolidation, and lower oxidation using the tapered die led to 40% improvement of tensile strength for the UHMWPE/HDPE blend. In the experiment, the researchers used many compounds, for example, 2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8Related Products of 6683-19-8).

2,2-Bis(((3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoyl)oxy)methyl)propane-1,3-diyl bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate) (cas: 6683-19-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Related Products of 6683-19-8

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics