Category: 31570-04-4

Zhang, Hong published the artcileMigration testing of metallized polypropylene films treated with ionizing radiation, Category: esters-buliding-blocks, the publication is Food Packaging and Shelf Life (2022), 100799, database is CAplus.

An UHPLC-QTOF/MS method was employed to identify chems. migrating from metalized polypropylene (met PP) films. The migration test was conducted by converting met PP films into pouches filled with 95% ethanol as a fatty food simulant and treating the pouch samples with gamma and electron beam irradiation at a dose of 10 kGy. A temperature of 22°C and a duration time of 21 days were used for the migration test. Over 10 chems. were identified, 3 of them were intentionally added substances (IAS), while the rest were considered as non-intentionally added substances (NIAS) including radiolysis products (RPs) derived from antioxidants. Based on the identification results, 5 chems. (3 hindered phenolic compounds, 1 phosphate compound and 1 phosphonate compound) were selected and their migration behaviors were evaluated under the effect of irradiation It was found that irradiation treatment significantly reduced the migration level of all substances. The extent of decrease was dependent on their stability under irradiation The phosphate/phosphonate compounds recorded higher stability resulting in less decrease (3-25%) in migration level. The hindered phenolic compounds were susceptible to irradiation and a large drop (45-88%) of migration level was observed Potential risks of met PP films were evaluated by comparing the migration levels of selected chems. with their migration limits either listed in Regulation (EU) Number 10/2011 or established with Cramer classification. The results showed that the migration level of the phosphonate compound was above the recommended migration limit, which may present a safety concern.

Food Packaging and Shelf Life published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C15H15OP, Category: esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Delolo, Fabio G. published the artcileOne-pot hydroformylation/O-acylation of propenylbenzenes for the synthesis of polyfunctionalized fragrances, Safety of Tris(2,4-di-tert-butylphenyl) phosphite, the publication is Catalysis Today (2021), 272-279, database is CAplus.

A process involving the hydroformylation/O-acylation of propenylbenzenes with a phenolic group is described for eugenol, isoeugenol, chavicol, propenyl guaethol, 2-allylphenol, and 2-allyl-6-methylphenol. The reactions occur in parallel, under the same reaction conditions in anisole, a solvent with an impressive sustainability rank comparable to those of ethanol and water. The products contain formyl and acetoxy moieties, both established olfactory groups in flavor and fragrance industry, and present potential as new fragrance components with less allergenic properties. To the best of our knowledge, this is the first time that a one-pot process involving hydroformylation combined with further functionalization in a remote site is described.

Catalysis Today published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Safety of Tris(2,4-di-tert-butylphenyl) phosphite.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Evtyugina, Margarita published the artcileAir quality and particulate matter speciation in a beauty salon and surrounding outdoor environment: Exploratory study, SDS of cas: 31570-04-4, the publication is Atmospheric Pollution Research (2021), 12(11), 101174, database is CAplus.

Beauty salons are considered occupational environments where the staff personnel and clients are exposed to high levels of airborne pollutants. In this study, air quality monitoring was carried out in Leon, Spain. Temperature, relative humidity, CO₂, CO and particulate matter were continuously monitored inside and outside areas of the salon. PM₁₀ was simultaneously collected onto filters. Volatile organic compounds and carbonyls were sampled inside the salon. Indoor PM₁₀ concentrations exceeded the recommended 24-h guideline of 50 μg m^-3. A detailed PM₁₀ chem. characterization included organic and elemental carbon, trace elements, water-soluble ions and organic speciation. Indoor vs outdoor ratios of PM₁₀, as well as the majority of PM₁₀-bound organic compounds, were >1. During work periods, organic carbon accounted for 29.5 ± 1.8 and 16.2 ± 4.5%weight of PM₁₀ indoors and outdoors, resp. More than 200 individual organic compounds were detected in the PM₁₀, including aliphatic alcs., fatty acids, phthalates, glycerol derivatives, fatty acid alkyl esters, phenolic compounds, alkanes and polycyclic aromatic hydrocarbons, among others. Many of them are part of formulations widely used in hair cosmetics, personal care and cleaning products. Inadequate ventilation, working activities and the use of specific products can greatly contribute to high indoor levels of organic air pollutants. Formaldehyde revealed a cancer risk of 4.6 x 10^-6, higher than the guideline level, suggesting a “possible risk” for workers. The total excess lifetime cancer risk from exposure to multiple compounds was 9.3 x 10^-6, which is lower than the acceptable risk, but not negligible.

Atmospheric Pollution Research published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, SDS of cas: 31570-04-4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Karagoz, Idris published the artcileEffect of melt temperature on product properties of injection-molded high-density polyethylene, Related Products of esters-buliding-blocks, the publication is Polymer Bulletin (Heidelberg, Germany) (2021), 78(10), 6073-6091, database is CAplus.

Abstract: Recently, injection molding process has generated growing interest, exhibiting great potential to easily fabricate unique polymeric materials for industrial applications. To increase the sustainability of the process, determinative parameters and their effects should be examined This study focuses on the effect of melt temperature on as-injection molded product, thereby high-d. polyethylene samples were fabricated by performing three different melt temperatures (180, 190, and 200°C), and subsequently, their mech., thermal, and morphol. and surface quality properties were examined The results showed that higher melting temperature lowered crystallization rate and decreased the strength of tensile and bending; however, it increased crystal lamellar thickness and impact strength. Moreover, the type of fibrillation changed with the temperature Moreover, defects formation increased with the temperature For further application, the effect of the temperature on surface quality was discussed. This work will provide a guide for manufacturing injection-molded products at desired properties by arranging melt temperature

Polymer Bulletin (Heidelberg, Germany) published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Related Products of esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Agnol, Lucas Dall published the artcileThermoplastic polyurethane/butylene-styrene triblock copolymer blends: an alternative to tune wear behavior, Quality Control of 31570-04-4, the publication is Polymer Bulletin (Heidelberg, Germany) (2022), 79(7), 5199-5217, database is CAplus.

This work presents an interesting alternative for improving thermoplastic polyurethane’s (TPUs) tribol. properties by incorporating styrene-ethylene/butylene-styrene triblock copolymer (SEBS) via melt blending. Two TPUs with different molar masses, two compatibilizers SEBS-g-MA (C1) and SEBS-b-TPU (C2) and paraffinic oil were used in the formulated blends. The raw materials’ effect on the morphol., rheol., phys.-mech. and tribol. performance of TPU/SEBS blends was monitored. The phase morphol. achieved depended on the addition of mineral oil and compatibilizer agent type. The rheol. anal. showed a pseudo-liquid viscous behavior for all samples. However, this behavior was related to the compatibilizer type and molar mass of the TPU. No significant changes were observed between the compatibilizers C1 and C2 concerning the physicomech. properties. The fact that mineral oil is preferentially contained in the SEBS phase is the fundamental point to explain the blends phase morphol. and their rheol. and phys. behaviors. The swollen state SEBS modifies the TPU’s performance. It also allows tuning properties such as abrasion and increasing the friction coefficient, enabling promising applications for these thermoplastic elastomers blends.

Polymer Bulletin (Heidelberg, Germany) published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Quality Control of 31570-04-4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Zhang, Xixiang published the artcileEffect of an active β-nucleating agent on the crystallization behavior of polypropylene random copolymer, Computed Properties of 31570-04-4, the publication is Journal of Polymer Research (2022), 29(1), 4, database is CAplus.

There are few com. available β-nucleating agents (β-NAs) that can induce Polypropylene random copolymer (PPR) to produce large amounts of β-crystals at present. In this work, we discover that the Zinc Suberate (ZnSA) can effectively induce the formation of β-crystals for PPR and the relative β-crystals content (Kβ) can reach 0.82 when 0.2wt% ZnSA is added. The incorporation of ZnSA significantly decrease the size of spherulite and increase the crystallization rate, which are revealed by polarized optical microscopy (POM) images. Then, the effects of ZnSA on the isothermal and non-isothermal crystallization behavior of PPR at ultra-fast cooling rates and heating rates were investigated by Flash-DSC. Through the isothermal crystallization process, a bimodal relationship between the peak crystallization time and temperature was obtained. When the isothermal crystallization temperature is higher than 36°C, ZnSA significantly increases the crystallization rate of PPR. According to the non-isothermal crystallization, we discover that the addition of ZnSA inhibits the formation of mesophase and the low cooling rate (< 10°C·s^-1) is more beneficial for the formation of β-crystals for PPR. In addition, β-crystals are not suitable to be characterized by rapid heating rate (> 300°C·s^-1) because β-crystals and α-crystals are not distinguished at rapid heating rate. This work is beneficial for deeply understanding the influence of β-NAs on crystallization behavior of PPR and providing guidance for the optimization of industrial production processes.

Journal of Polymer Research published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C18H23OP, Computed Properties of 31570-04-4.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Dong, Lyu published the artcileAdvantage of Preserving Bi-orientation Structure of Isotactic Polypropylene through Die Drawing, Recommanded Product: Tris(2,4-di-tert-butylphenyl) phosphite, the publication is Chinese Journal of Polymer Science (2021), 39(1), 91-101, database is CAplus.

The isotactic polypropylene (iPP) usually shows a unique parent-daughter lamellae structure in which the parent and daughter lamellae are against each other with a near perpendicular angle (80° or 100°). Inducing a high fraction of oriented cross-hatched structure in iPP during processing is desirable for designing the bi-oriented iPP products. We processed a com. iPP via tensile-stretching and die-drawing to evaluate the structural evolution of oriented parent-daughter lamellae. It turned out that the die-drawing process had an advantage in attaining a high fraction of oriented cross-hatched structure of iPP, as compared to the free tensile stretching. Besides, the presence of α-nucleating agents affected the formation of oriented parent-daughter lamellae in the die-drawn samples, whereas such influence diminished in the free stretched ones. It was found that the confined deformation inside the die led to the well-preserved oriented cross-hatched structure in the die-drawn iPP.

Chinese Journal of Polymer Science published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Recommanded Product: Tris(2,4-di-tert-butylphenyl) phosphite.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chen, Yukun published the artcileThe High Complexity of Plastic Additives in Hand Wipes, Related Products of esters-buliding-blocks, the publication is Environmental Science & Technology Letters (2021), 8(8), 639-644, database is CAplus.

Extensive and long-term applications have resulted in global distributions of plastic additives (PAs). To facilitate the understanding of human exposure to PAs, the present study investigated the abundances and profiles of a broad range of PAs on human hands via hand wipe sampling. Sixty out of 160 PAs were detected in >50% of hand wipes collected from 30 children and 45 adults, among which a number of organophosphate esters (OPEs) and synthetic antioxidants that have rarely or never been investigated in prior studies. The total masses of PAs ranged from 650 to 87 030 ng (median: 6110 ng) and 1230 to 19360 ng (median: 5600 ng) in adultsâ€?and children′s hand wipes, resp. By categories, phthalates (PAEs) represented the most abundant group of PAs, followed by non-PAE plasticizers, UV stabilizers, OPEs, antioxidants, and bisphenol analogs. Children exhibited greater PA levels per square centimeter of hand surface, indicating elevated exposure compared with adults. Strong correlations existed for many PAs between adults and children or within each subpopulation, indicating close connections between the two subpopulations in the exposure profiles. The great complexity of plastic additives on hands raises the need for future investigations on human exposure pathways and potential health risks from the “cocktail” effects.

Environmental Science & Technology Letters published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Related Products of esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Shi, Yanqin published the artcileGreen cinnamaldehyde and thymol modified zinc oxide with double synergistic antibacterial effects in polypropylene, Related Products of esters-buliding-blocks, the publication is Journal of Applied Polymer Science (2021), 138(33), 50911, database is CAplus.

The green cinnamaldehyde (CA) and thymol (THY) sep. or successively modified O-ZnO (O-ZnO-CA, O-ZnO-THY, and O-ZnO-CA-THY) were prepared after (3-aminopropyl) triethoxysilane (KH550) was grafted to the surface of ZnO (O-ZnO) and characterized by FTIR, TGA, and SEM. Polypropylene composites (PP/O-ZnO-CA, PP/O-ZnO-THY, and PP/O-ZnO-CA-THY) were prepared by melting the modified O-ZnO and PP. The antibacterial tests showed that the antibacterial rate of PP/O-ZnO-CA and PP/O-ZnO-THY against S. aureus and E. coli was obviously enhanced. It indicated an excellent synergetic antibacterial effect of O-ZnO and the little CA or THY grafted on the surface of O-ZnO. The antibacterial effect of O-ZnO-CA and O-ZnO-THY was related to the hydrophobic and hydrophilic groups contained in CA and THY. Importantly, CA and THY in O-ZnO-CA-THY exhibited another excellent synergetic antibacterial effect against both S. aureus and E. coli. The antibacterial rate of three PP composites containing 4 phr O-ZnO-CA-THY against S. aureus and E. coli reached 95% and 90%, resp. The mechanism was regarded as that CA and THY grafted onto the same O-ZnO improved the contact probability between antibacterial agents and bacteria. Moreover, O-ZnO-CA, O-ZnO-THY, and O-ZnO-CA-THY had excellent migration resistance in the PP matrix.

Journal of Applied Polymer Science published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C8H9BN2O2, Related Products of esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

El Hajj, N. published the artcileRecycling of poly(propylene)-based car bumpers as carrier resin for short glass fiber composites, Category: esters-buliding-blocks, the publication is Journal of Material Cycles and Waste Management (2021), 23(1), 288-300, database is CAplus.

The production of composite materials from post-consumer polypropylene car bumper waste (PP-CBW) and short glass fibers (SGF) by melt processing was investigated during this study. To improve the interfacial adhesion between the fibers and the matrix, two coupling agents maleic anhydride-grafted linear low-d. polyethylene (LLDPE-g-MA) and Retain were introduced during the compounding process. The effect of various SGF loadings, types of coupling agents, SGF to coupling agent ratio and short glass fiber length on thermal, phys. and mech. properties were thoroughly investigated during this study. Differential scanning calorimetry (DSC) anal. indicated significant changes in the crystallization temperature (T_c) and percentage crystallinity (X_c) when the SGF content and length were modified. The average length (Lave) was found to decrease with increasing the SGF loading. On the other hand, Lave values increased with the original glass fiber length and when a SGF/LLDPE-g-Ma ratio of 5:1 was used compared to the ratio 3:1. The incorporation of SGF improved drastically the flexural and the tensile properties but decreased the impact properties. The impact properties improved when a ratio of SGF/LLDPE-g-MA of 3:1 was used. Mech. results showed also that the LLDPE-g-MA is a better compatibilizer than Retain for stiffness and strength, whereas Retain composites resulted in higher impact properties than LLDPE-g-MA composites. The SEM results revealed that SGFs are evenly distributed in PP-CBW matrixes.

Journal of Material Cycles and Waste Management published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Category: esters-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics