Category: 5444-75-7

Dynamics of Concentrated Polymer Solutions Revisited: Isomonomeric Friction Adjustment and Its Consequences was written by Yan, Zhi-Chao;Zhang, Bao-Qing;Liu, Chen-Yang. And the article was included in Macromolecules (Washington, DC, United States) in 2014.HPLC of Formula: 5444-75-7 The following contents are mentioned in the article:

In concentrated polymer solutions, the concentration (ϕ) dependence of the terminal relaxation time τ_d reflects ϕ-dependent changes of several factors, the monomeric friction ζ₀(ϕ), the entanglement length, a(ϕ), and the correlation length, ξ(ϕ). Usually, the effect of the latter two factors on τ_d can be cast in a simple power law, τ_d ∼ ϕ^v. This power law form is to be examined for τ_d after correction of the changes of ζ₀ with ϕ, but this iso-ζ₀ correction is an unsettled problem. The correction based on the concept of “iso-free-volume” has been attempted in literatures. This study focused on four groups of solutions with different local frictional environments to examine universal validity of this correction. The isothermal data of τ_d were rheol. measured, and then corrected to the iso-frictional (iso-ζ₀) state. After this correction, τ_d of most solutions in small mol. solvents showed the power law behavior τ_d ∼ ϕ^v with exponent of v = 2.0 ± 0.2, irresp. of the solvent type, either neutral small mols. or an ionic liquid (organic salt), and of the difference of the glass transition temperatures of the solvent and polymer. In contrast, the exponent became smaller (v ≈ 1.3) for the solutions in an oligomeric solvent. These results are discussed within the frame of the two-length scaling theory that considers changes of ξ and a with ϕ. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7HPLC of Formula: 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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.HPLC of Formula: 5444-75-7

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

Raman study of intramolecular frequency noncoincidence effect in dialkyl benzenedicarboxylates was written by Kim, Yoo Joong;Chang, Hai-Chou;Sullivan, Vivian S.;Jonas, Jiri. And the article was included in Journal of Chemical Physics in 1999.SDS of cas: 5444-75-7 The following contents are mentioned in the article:

Raman noncoincidence effects (NCE) of the C:O stretching band of dialkyl esters of phthalic, isophthalic, and terephthalic acids were measured as a function of concentration in MeCN and dioxane solutions By quenching the intermol. vibrational interactions between the C:O groups of neighboring mols. by dilution, the NCE arising from the coupling between 2 C:O stretching vibrations in a single diester mol. was observed for the 1st time. The intramol. NCE values for these mols. were neg. and dependent on the relative orientation and distance between the 2 C:O groups in the mol. Similarly as for most intermol. NCE, the intramol. NCE is explained by the transition-dipole coupling mechanism. The presence of a single dipolar coupling pair allows one to express the intramol. NCE values by a simple anal. equation with a few mol. parameters including those for the arrangement of the 2 C:O groups. The observed intramol. NCE values are well predicted, with a limitation of large dipolar distance, by the equation with the geometric parameters obtained from the ab initio optimized structures. In fact, the NCEs provided information about detailed conformational structure of the benzenedicarboxylates in dilute solutions Since the intramol. NCE value indeed corresponds to a frequency difference between the in-phase and out-of-phase C:O stretching normal modes of a mol., suggesting that the vibrational coupling between the 2 C:O internal coordinates in these mols. is mainly due to the transition dipolar interaction. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7SDS of cas: 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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.SDS of cas: 5444-75-7

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

Carbon-13 NMR Study of the Effect of Confinement on the Molecular Dynamics of 2-Ethylhexyl Benzoate was written by Sullivan, Vivian S.;Kim, Yoo Joong;Xu, Shu;Jonas, Jiri;Korb, J.-P.. And the article was included in Langmuir in 1999.Application of 5444-75-7 The following contents are mentioned in the article:

Spin-lattice relaxation times of individual carbons in 2-ethylhexyl benzoate (EHB) in bulk and confined to porous silica glasses of pore radii of 33, 52, and 102 Å were measured as a function of temperature from +40 to -51 °C. The two-state fast exchange model was successfully applied, in the wide temperature range including beyond the motional narrowing regime, to determine the spin-lattice relaxation times of the mols. in the surface layer (T_1S) as a function of temperature The Cole-Davidson distribution model was used to analyze the relaxation data for both the bulk (T_1B) and surface layer (T_1S) of the confined liquid The line broadening of confined EHB at lower temperatures below -21 °C inherently limited the temperature range over which T_1S could be estimated and prevented the quant. anal. of T_1S by the model. Through the phenomenol. comparison of T_1S with T_1B in terms of the parameters of the Cole-Davidson model, it was found that the motional behavior of the Ph ring part of the EHB mol. was significantly affected by the surface interaction and the effect is smaller for the flexible alkyl chain. Small temperature dependence of the relaxation rate of T_1S at motional narrowing regime showed a characteristic feature of liquid diffusing on a two-dimensional surface. In addition, the results of the quant. anal. of T_1B were compared with a previous experiment performed as a function of pressure. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Application of 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Application of 5444-75-7

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

New plasticizer and coalescent for graphic arts applications was written by Arendt, William D.;Brewer, Rebecca D.;McBride, Emily L.. And the article was included in Proceedings of the International Waterborne, High-Solids, and Powder Coatings Symposium in 2012.COA of Formula: C15H22O2 The following contents are mentioned in the article:

Waterborne overprint varnish (OPV) has a significant role in the graphic arts industry. Some of the polymers used in this coatings industry segment are non-film formers at room temperature A plasticizer and/or a coalescent is required to help form a film properly to ensure full development of performance properties with these hard polymers. Glycol ethers, phthalates esters (such as Bu benzyl phthalate) and benzoate esters have been employed as plasticizers/coalescents for OPVs as well as ink. A new dibenzoate triblend plasticizer platform has been recently introduced for use in architectural coatings as a low VOC plasticizer/coalescent. Based on its broad range of compatibilities with polymers utilized in the coatings industry (for example, in vinyl acrylic, acrylic and styrene acrylic types), one of the triblend plasticizers, X-20, was evaluated initially in polymer dispersion/coalescent binary blends, a waterborne OPV and an ink formulation. In addition to the triblend, an entirely new monobenzoate plasticizer/coalescent will be introduced to the industry as an effective lower VOC alternative. The polymer selected for this evaluation is an industry standard hard styrene acrylic type utilized in simple starting formulations. This basic OPV evaluation includes the effect of the plasticizer/coalescent on min. film formation temperature, adhesion to different substrates, rub resistance, alkali and water resistance, viscosity response of the polymer dispersion, gloss, and other supporting data. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7COA of Formula: C15H22O2).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.COA of Formula: C15H22O2

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

New low odor benzoate coalescent for latex paint was written by Arendt, William D.. And the article was included in Proceedings of the International Waterborne, High-Solids, and Powder Coatings Symposium in 2000.Computed Properties of C15H22O2 The following contents are mentioned in the article:

Coalescents used in latex paint are known to contribute to VOC (volatile organic compounds) content, and can also contribute to the odor of a recently dried coating. With the more stringent environmental regulations that formulators must accommodate, there is a need in the industry for a highly efficient, low odor and VOC coalescent. Recently, 2-ethylhexyl benzoate, a new benzoate ester that is low in odor and lower in VOC than the com. coalescent 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate (abbreviated TMB), was evaluated as a latex paint coalescent. The 2-ethylhexyl benzoate was evaluated for function in the following types of latex paints: contractor and high quality interior flats, an interior semigloss, an interior gloss, and exterior flat paints. The 2-ethylhexyl benzoate was compared to TMB in paint formulations at equal and low (-25% by weight) levels of the control coalescent. The evaluation specifically focused on the effect of coalescent on tests relating to coalescent function such as low temperature film formation and scrub resistance. The results indicated that the 2-ethylhexyl benzoate performed as well, or better than TMB coalescent, and was more efficient. In addition to being an effective and efficient coalescent, the 2-ethylhexyl benzoate is low in odor (neat and in room after paint application), and has a lower VOC that the TMB. The new coalescent offers the latex paint formulator an efficient raw material for the development of low odor and lower VOC latex paint. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Computed Properties of C15H22O2).

2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Computed Properties of C15H22O2

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

Transport properties of fluids using new rough hard-sphere and molecular dynamics simulation was written by Farhadi, Mitra;Fakhraee, Sara;Akbari, Falamarz. And the article was included in Journal of Molecular Liquids in 2019.Application of 5444-75-7 The following contents are mentioned in the article:

We have studied transport properties, as well as the self-diffusion, viscosity and thermal conductivity of fluids by using new semi-theor. model based on the rough hard-sphere (RHS) theory. In the present study, the proposed RHS is employed to model the transport properties of CH₄, CCl₄, C₆H₆, CHCl₃, H₂O, R134a, 2-EHB, PE and PS for temperatures ranging from 110 to 530 K and at pressures up to 1000 MPa. Parameters appeared in the new RHS model are taken from previously developed perturbed hard-trimer chain (PHTC) equation of state. From 174 exptl. data points examined, the average absolute relative deviation AARD of predicted viscosities for CH₄, H₂O and R134a was found to be 6.59%. In the case of self-diffusion, the new RHS-based model correlated and predicted 139 exptl. data points with AARD equal to 4.06%. The proposed RHS-based model has also been extended to predicted 228 exptl. data points of thermal conductivity for CH₄, H₂O and R134a with AARD equal to 4.54%. In addition, mol. dynamics (MD) calculations were performed with the GROMACS simulation package and to investigate the thermophys. properties of fluids. The MD approach enabled us to calculate the d., viscosity, self-diffusion and thermal conductivity of CH₄ and C₆H₆. Finally, MD is applied to calculate d. of binary water-alc. mixtures including water-methanol and water-ethanol. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Application of 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. 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.Application of 5444-75-7

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

Comparison of aroma components in eleven medium- and late-maturing Yantai apple cultivars by multivariate statistical analysis was written by Sun, Cheng-feng;Zhu, Liang;Zhou, Nan;Yang, Jian-rong;Li, Yan-shen;Jiang, Zhong-wu. And the article was included in Xiandai Shipin Keji in 2015.HPLC of Formula: 5444-75-7 The following contents are mentioned in the article:

To investigate the differences in the major aroma components between medium- and late-maturing Yantai apple cultivars, headspace solid phase microextraction (HS-SPME) combined with gas chromatog. mass spectrometry (GC-MS) was employed. The apple cultivars and their aroma components were analyzed using principal component anal. (PCA) and cluster anal. (CA). The results showed that 59 aroma compounds were identified from 11 apple cultivars, and 21 of these were common to all apple cultivars. Among the common aroma components, acetate esters, butyrate esters, hexanoate esters, hexanal (including 2-hexenal), and some higher alcs. showed higher concentrations The PCA results indicated that the comprehensive scores of Yang Guang and Dan Xia apples were the highest, while that of the Extremely Precocious Fuji apple was the lowest. The comprehensive score ranking reflected the differences of the major aroma components between the apple cultivars. The CA results showed that 11 apple cultivars could be classified into four clusters. Yantai Fuji 3, Dou Nan, Gan Hong, Extremely Precocious Fuji, Pinova, Yantai Fuji 1, and Best Short Fuji were classified into a cluster; Dan Xia and Yang Guang were classified into a cluster; and Liang Xiang and Hua Shuai were classified into two clusters. Through an effective combination of PCA and CA, the aroma characteristics of four apple cultivars (Dan Xia, Yang Guang, Liang Xiang, and Hua Shuai) were more prominent, providing a basis for parent selection in future apple breeding. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7HPLC of Formula: 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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. HPLC of Formula: 5444-75-7

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

Coalescent formulation studies: Efficiency and partition rates was written by Arendt, William D.;Strepka, Arron M.;Gruszecki, Kristy. And the article was included in Proceedings of the International Waterborne, High-Solids, and Powder Coatings Symposium in 2001.Product Details of 5444-75-7 The following contents are mentioned in the article:

2-Ethylhexyl benzoate (2EHB) was recently introduced to the coatings industry as a low odor, low volatility coalescent. The original architectural paint data indicated that 2EHB is an effective coalescent for latex paint, and some of the data indicated that 2EHB is more efficient than the 2,2,4-tri-Me, 1-3-pentanediol monoisobutyrate (TMB). This initial efficiency data suggested the need to better define the apparent efficiency of 2EHB, factors affecting efficiency and its measurement. It was decided to measure efficiency performance in paint as opposed to measurements in neat emulsion coalescent blends. The primary yardstick tests chosen were low temperature coalescence (by porosity determinations and visual assessment), scrub resistance (room temperature and low temperature dry), and low temperature touch up. The efficiency data developed confirms that overall 2EHB is about 25% more efficient than TMB. However, differences in formulations sometimes hide these efficiencies. For example, it was difficult measure efficiency in high PVC flats. Also, in some high T_g polymers, the partition rate of 2EHB was slower than TMB. This fact can mask efficiency. The chem. nature of 2EHB is different from the TMB and this difference, in a few instances, may require different formulation or processing strategies. Understanding of performance differences is necessary to fully exploit 2EHB’s potential as an efficient latex paint coalescent. Guidelines on maximizing the efficiency of 2EHB as a coalescent will be presented. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Product Details of 5444-75-7).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Product Details of 5444-75-7

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

Synthesis and characterization of AMO LDH-derived mixed oxides with various Mg/Al ratios as acid-basic catalysts for esterification of benzoic acid with 2-ethylhexanol was written by Kuljiraseth, J.;Wangriya, A.;Malones, J. M. C.;Klysubun, W.;Jitkarnka, S.. And the article was included in Applied Catalysis, B: Environmental in 2019.Safety of 2-Ethylhexyl benzoate The following contents are mentioned in the article:

Proven to possess distinguishable phys. and acid-base properties superior to conventional LDHs, aqueous miscible organic solvent-layered double hydroxides (AMO-LDHs) were thus synthesized and used as precursors to prepare the Mg/Al mixed oxide catalysts in this work. The AMO-LDH based oxide catalysts with various ratios of Mg/Al were studied for the chem. and phys. properties and the activity on esterification of benzoic acid with 2-ethylhexanol. The catalysts were characterized using BET, XRD, TGA, and XPS. Moreover, the acid-base properties were studied. As a result, the Mg/Al mixed oxides after calcination at 500 °C still had the clay structure, and were found to possess both acid and base sites. As the Mg/Al ratio increased, the total d. of acid and basic sites decreased. Moreover, the acid-basic strength depended on their phase compositions and coordination number The activity of calcined LDHs catalysts was tested for the esterification of benzoic acid with 2-ethylhexanol, aimed at producing 2-ethylhexyl benzoate as the desired chem. The products were analyzed using GC-MS/TOF. In summary, the conversion of benzoic acid was enhanced significantly using the Mg-Al mixed oxides as the catalysts, owing to the acid-base sites (both Mg²⁺-O^2- and Al³⁺-O^2- pairs) of the catalysts. The catalyst with the Mg/Al ratio of 4:1 can convert 66% benzoic acid to 2-ethylhexyl benzoate. Moreover, the other products were composed of 2-ethylhexanal, 3-heptanone, and 3-heptanol because of acid-base pairs. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Safety of 2-Ethylhexyl benzoate).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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.Safety of 2-Ethylhexyl benzoate

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

Detection of prohibited treatment products on racing tires using headspace solid phase microextraction (SPME) and gas chromatography/mass spectrometry (GC/MS) was written by Kranz, W. D.;Carroll, C. J.;Goodpaster, J. V.. And the article was included in Analytical Methods in 2016.Electric Literature of C15H22O2 The following contents are mentioned in the article:

A variety of com. tire treatments are available that purport to help automobile tires better cling to the surface of a road or racetrack, raising concerns in the professional racing community that such products might be used to illicitly boost performance in competitive events. These tire treatments are reputed to cut lap times and improve handling and maneuverability. In some cases, the manufacturers even boast that their products are “undetectable” (i.e., impervious to the scrutiny of laboratory testing). In this study, a number of banned tire treatment products were evaluated principally by gas chromatog.-mass spectrometry (GC-MS) using solid phase microextraction (SPME) as a pre-concentration technique. The chems. off-gassed by each product were determined and grouped into two broad categories: ‘plasticizer-based’ tire treatment products and ‘hydrocarbon-based’ tire treatment products. This information was then applied to the anal. of genuine tire samples provided by the United States Auto Club (USAC), a professional racing association Over the course of one year, 10 out of the 71 questioned samples tested pos. for a prohibited treatment product. The manufacturers’ claims regarding their products’ invisibility to lab tests were largely proven to be unfounded: both the products themselves and the tires treated with them can be identified by a number of characteristic volatile compounds These included known plasticizers such as pentanedioic acid di-Et ester, plasticizer-related compounds such as 2-ethyl-1-hexanol, and dearomatized distillates. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Electric Literature of C15H22O2).

2-Ethylhexyl benzoate (cas: 5444-75-7) 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. 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.Electric Literature of C15H22O2

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