Category: 31570-04-4

Liu, Runzeng published the artcileSingle-Use Face Masks as a Potential Source of Synthetic Antioxidants to the Environment, Formula: C42H63O3P, the publication is Environmental Science & Technology Letters (2021), 8(8), 651-655, database is CAplus.

Single-use face masks are a powerful tool for reducing the spread of COVID-19. The usage of single-use face masks has increased enormously since the start of the COVID-19 pandemic, and pollution from the huge volume of discarded single-use face masks may become an environmental issue. This study focuses on synthetic antioxidants (AOs), including synthetic phenolic antioxidants (SPAs) and organophosphite antioxidants (OPAs), used in single-use 3-layer face masks. Both SPAs and OPAs were detected in single-use face masks, with total concentrations ranging 20.0-575μg/g (median of 175μg/g). The dominant congeners detected in the face masks were tris(2,4-di-tert-butylphenyl) phosphite (AO168, median of 83.2μg/g), tris(2,4-di-tert-butylphenyl) phosphate (AO168O, median of 72.9μg/g), and pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (AO1010, median of 13.7μg/g). No significant concentration difference was observed between medical and nonmedical face masks. Among the 3 different layers of the face masks, the middle layers showed the highest AO concentrations On the basis of the median concentrations detected, we estimate that 1084 tons of AOs is used in face masks annually, suggesting that discarded face masks may be a source of AOs to the environment. This is the 1st study to report the occurrence of a wide range of AOs in face masks.

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, Formula: C42H63O3P.

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

Hernandez-Fernandez, Joaquin published the artcileExperimental study of the auto-catalytic effect of triethylaluminum and TiCl₄ residuals at the onset of non-additive polypropylene degradation and their impact on thermo-oxidative degradation and pyrolysis, COA of Formula: C42H63O3P, the publication is Journal of Analytical and Applied Pyrolysis (2021), 105052, database is CAplus.

In this article, the pyrolysis and thermo-oxidative degradation of five industrial waste products was carried out in a discontinuous quartz reactor at 550°C under the auto-catalytic effect of residues of titanium tetrachloride, triethylaluminium (TEAL), and iron (Fe). We using the coupled on-site anal. of an GC-MS/FID/PDHID with 7 valves and 8 columns in series. The study also discusses the effect of the concentration of the catalyst residuals with the Eac (activation energy) and the evolution of the profile of permanent oxygenated gases, hydrocarbons and sulfurs, as well as the functional waste groups from decomposition during pyrolysis and thermo-oxidative degradation The origin of the degradation and the beginnings of PP pyrolysis and thermo-oxidative degradation are explained by hydrolysis mechanisms and thermal reactions that imply successive reactions with these (TEAL), TiO₂, and chloride residues, giving rise to Et radicals and explaining the formation of alcs., ketones, carboxylic acids, alkynes and alkenes. The study also found that the gaseous profiles are very consistent with the DTG curves and the Eac, in terms of the appearance of peaks and relevant stages throughout the total temperature range. The effect of Cl, Fe and TEAL on the PP degradation is very high upon passing from an inert to an oxidative atm. This reduces the content of hydrocarbons and oxygenates to CO₂ between 49 and 66% because of the attack of the oxygen atom. In the pyrolysis the propylene content oscillates between 42 and 56%.

Journal of Analytical and Applied Pyrolysis 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, COA of Formula: C42H63O3P.

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

Yi, Zhuwu published the artcileBiaxially stretched polyamide 6/ethylene vinyl alcohol copolymer films with improved oxygen barrier and mechanical properties, Synthetic Route of 31570-04-4, the publication is Polymer Bulletin (Heidelberg, Germany), database is CAplus.

Polyamide 6 (PA6) and PA6/ethylene vinyl alc. copolymer (EVOH) films were prepared through extrusion casting process, followed by uniaxial and biaxial stretching on a laboratory biaxial stretcher. The crystallization properties, mech. properties, and barrier properties of PA6/EVOH films before/after stretching were investigated. It is found that the crystallinity of the stretched PA6/EVOH film is increased with the increase in EVOH content and stretching ratio. Notably, the oxygen barrier property of biaxially stretched PA6/EVOH films is 3 times higher than that of neat PA6 due to the strong interaction of two polymers and increased crystallinity. The modulus, tensile strength, and elongation at break of biaxially stretched PA6 films are also enhanced with the incorporation of EVOH. The crystal orientation of stretched PA6/EVOH films was investigated according to the wide-angle X-ray scattering anal. The degree of orientation is increased with the stretching ratio. With the increase in the orientation degree, the stretched films show increased tensile strength whereas decreased toughness. Furthermore, the biaxially stretched films present balanced mech. properties, and the stretching ratio of 3 x 3 shows excellent comprehensive mech. properties.

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 C15H14O, Synthetic Route of 31570-04-4.

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

Sun, Ming Yang published the artcilePreparation the composite with high toughness and strength by recycled cyclic olefin copolymer, Formula: C42H63O3P, the publication is Polymer Engineering & Science (2022), 62(5), 1427-1434, database is CAplus.

At present, it is of great significance to develop an effective method of recycling cyclic olefin copolymers (rCOC) due to its increasing application. But, its poor toughness is still an important difficulty to limit its effective recycling. In this article, we introduced PA6 into the POE-g-MAH/rCOC composites. Because of the good compatibility of POE-g-MAH between PA6 and rCOC, it just led to an overall improvement in mech. properties of PA6/POE-g-MAH/rCOC (45/15/40) composites. Its tensile strength reached 42.3 MPa, which was more than 41.9% compared with that of POE-g-MAH/rCOC composites. Its notched impact strength was 11.7 kJ/m², which was higher than 875.0% compared with rCOC. Furthermore, the component of PA6 was wrapped by nonpolar rCOC and POE-g-MAH, resulting in a low water absorption rate (1.0%). So, the strength of the composites only dropped a little after water adsorption. In summary, the addition of PA6 helped the composites effectively utilize the toughness of POE-g-MAH. Thus, we developed an easy method to recycle rCOC and prepare the responding composites with high strength and toughness.

Polymer Engineering & 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 C4H8Cl2S2, Formula: C42H63O3P.

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

Wu, Xiaowei published the artcilePhoto aging and fragmentation of polypropylene food packaging materials in artificial seawater, Quality Control of 31570-04-4, the publication is Water Research (2021), 116456, database is CAplus and MEDLINE.

Plastic litters in marine environment usually contain varied types and contents of additives that can significantly affect the photochem. aging and fragmentation process of microplastics (MPs). This study investigated the photo aging process of two common polypropylene (PP) food packaging materials (i.e., meal box and tea cup) in artificial seawater within 12 d of UV irradiation Results revealed that the aging of both plastic materials were critically inhibited compared with pure PP, indicating that PP food packaging materials in natural seawater may share longer aging time than pure ones. GC-MS anal. revealed that antioxidant Irgafos 168 (tris (2,4-di-tert-butylphenyl) phosphite) was the dominant additive in these plastic materials. Photo reaction between Irgafos 168 and hydroperoxide species on the surface of MPs to prevent the formation of hydroxyl radical was the possible mechanism for the inhibiting effects. After antioxidant was exhausted, its photo degradation products could become the dominant contributor to influence the aging process of MPs. This is the first work exploring the role of antioxidant on the aging process of PP MPs in simulated ocean environment. The findings could be of great help for unraveling the effect of antioxidants on the aging-related environmental risk of hydrocarbon plastics in ocean environment.

Water 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 C20H28B2O4S2, Quality Control of 31570-04-4.

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

Wu, Xiaowei published the artcilePhoto aging and fragmentation of polypropylene food packaging materials in artificial seawater, Quality Control of 31570-04-4, the publication is Water Research (2021), 116456, database is CAplus and MEDLINE.

Plastic litters in marine environment usually contain varied types and contents of additives that can significantly affect the photochem. aging and fragmentation process of microplastics (MPs). This study investigated the photo aging process of two common polypropylene (PP) food packaging materials (i.e., meal box and tea cup) in artificial seawater within 12 d of UV irradiation Results revealed that the aging of both plastic materials were critically inhibited compared with pure PP, indicating that PP food packaging materials in natural seawater may share longer aging time than pure ones. GC-MS anal. revealed that antioxidant Irgafos 168 (tris (2,4-di-tert-butylphenyl) phosphite) was the dominant additive in these plastic materials. Photo reaction between Irgafos 168 and hydroperoxide species on the surface of MPs to prevent the formation of hydroxyl radical was the possible mechanism for the inhibiting effects. After antioxidant was exhausted, its photo degradation products could become the dominant contributor to influence the aging process of MPs. This is the first work exploring the role of antioxidant on the aging process of PP MPs in simulated ocean environment. The findings could be of great help for unraveling the effect of antioxidants on the aging-related environmental risk of hydrocarbon plastics in ocean environment.

Water 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 C20H28B2O4S2, Quality Control of 31570-04-4.

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

Wu, Xiaowei published the artcilePhoto aging and fragmentation of polypropylene food packaging materials in artificial seawater, Quality Control of 31570-04-4, the publication is Water Research (2021), 116456, database is CAplus and MEDLINE.

Plastic litters in marine environment usually contain varied types and contents of additives that can significantly affect the photochem. aging and fragmentation process of microplastics (MPs). This study investigated the photo aging process of two common polypropylene (PP) food packaging materials (i.e., meal box and tea cup) in artificial seawater within 12 d of UV irradiation Results revealed that the aging of both plastic materials were critically inhibited compared with pure PP, indicating that PP food packaging materials in natural seawater may share longer aging time than pure ones. GC-MS anal. revealed that antioxidant Irgafos 168 (tris (2,4-di-tert-butylphenyl) phosphite) was the dominant additive in these plastic materials. Photo reaction between Irgafos 168 and hydroperoxide species on the surface of MPs to prevent the formation of hydroxyl radical was the possible mechanism for the inhibiting effects. After antioxidant was exhausted, its photo degradation products could become the dominant contributor to influence the aging process of MPs. This is the first work exploring the role of antioxidant on the aging process of PP MPs in simulated ocean environment. The findings could be of great help for unraveling the effect of antioxidants on the aging-related environmental risk of hydrocarbon plastics in ocean environment.

Water 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 C20H28B2O4S2, Quality Control of 31570-04-4.

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

Bakshi, Ashok Kumar published the artcileProcessability and physico-mechanical properties of ultrahigh-molecular-weight polyethylene using low-molecular-weight olefin wax, COA of Formula: C42H63O3P, the publication is Polymer Engineering & Science (2022), 62(7), 2335-2350, database is CAplus.

The influence of mol. weight of olefin wax as a plasticizer on the processability and properties of ultrahigh-mol.-weight polyethylene (UHMWPE) was thoroughly investigated in this study. Two different grades of olefin wax (H5 and 210P) were used sep. to plasticize UHMWPE. Comparative results were analyzed based on mixing torque, mech., thermal, thermo-mech., and morphol. aspects. The Gaussian math. model was applied to the internal thermo-shear batch mixing torque data to predict processability and plasticization of the resulting compounds The relatively low-mol.-weight wax (H5) seemed to be more efficient at uncoiling the entanglements among the amorphous phase of UHMWPE. The lowest degree of crystallinity range (34%-40%) and the highest nucleation rate (0.9 min^-1) were found with 10 phr H5 wax plasticized UHMWPE. The tensile strength of 30.5 MPa and elastic modulus of 127 MPa, achieved by the addition of H5 wax at 10 phr loading, confirmed the optimum effect of plasticization. The plasticization effect was also established from the loss moduli and Cole-Cole plots. A smaller number of multiple stress-induced overshoots and the inclining approach toward the viscous dominant regime with temperature sweep were observed in the case of 10 phr H5 wax composition SEM anal. revealed disappearance of interfacial crazing and interparticle boundaries progressively with the increase in H5 wax content. Overall, plasticized UHMWPE with 10 phr content of H5 wax showed the optimum processability and properties.

Polymer Engineering & 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, COA of Formula: C42H63O3P.

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

Chapke, Krushna published the artcileMigration study of chemical additives from low density polyethylene (LDPE) into dahi, Recommanded Product: Tris(2,4-di-tert-butylphenyl) phosphite, the publication is Journal of Food Science and Technology (New Delhi, India) (2022), 59(8), 3283-3295, database is CAplus and MEDLINE.

Dahi is widely used fermented milk product in India. Low D. Polyethylene (LDPE) is the most extensively used packaging material for Dahi in India. The present study was conducted to develop the anal. methods for extraction and migration of chem. additives from LDPE into dahi. Characterization of dahi packaging materials collected from five different firms was done by Fourier Transform IR Spectroscopy. Focused ultrasound solid liquid extraction method was observed to be better as compared to solid liquid extraction method as the former extracted maximum additives from the LDPE. Out of total 76 chem. additives extracted from LDPE, only eight (10.52%) matched with the existing pos. list of polyolefins prescribed by Bureau of Indian Standads (BIS). The overall migration of chem. additives from all the LDPE samples was below their maximum limit as given by BIS standards Chem. additives which migrated into the simulants included the antioxidants, fatty acids and their derivatives, unreacted hydrocarbons, plasticizers, lubricants and surfactant, etc.

Journal of Food Science and Technology (New Delhi, India) 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

Ho, Dang Binh published the artcileDevelopment of a Modified System to Provide Improved Diastereocontrol in the Linear-Selective Cu-Catalyzed Reductive Coupling of Ketones and Allenamides, COA of Formula: C42H63O3P, the publication is Journal of Organic Chemistry (2022), 87(4), 2142-2153, database is CAplus and MEDLINE.

Chiral γ-lactones are prevalent organic architectures found in a large array of natural products. In this work, authors disclose the development of a modified catalytic system utilizing a com. available Cu-phosphite catalyst for the diastereoselective reductive coupling of chiral allenamides and ketones to afford chiral γ-lactone precursors in 80:20 to 99:1 dr.

Journal of Organic Chemistry 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, COA of Formula: C42H63O3P.

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