Category: 15625-89-5

Pan, Zhenxue published the artcileSynthesis and properties of new multifunctional photosensitive carbosilanes, Quality Control of 15625-89-5, the publication is Tetrahedron Letters (2022), 153931, database is CAplus.

Though the phys. blending polymeric preceramic and photosensitive compounds has been proved an easily scaled-up and cost-effective approach to prepare photocurable precursors for most of silicon-based ceramics, there is still scarce of practical photocurable precursor system to SiC ceramic, due to poor compatibility between polycarbosilane and com. available photosensitizers. Also, in contrast to intensive research on polymeric precursor, no attention has been paid on development of photosensitive compounds for preceramic polymers. In this work, a series of photosensitive carbosilanes containing Si-C backbone and acrylate group was designed and synthesized, which showed good compatibility with polycarbosilanes. The calculation result on the solubility parameters of the carbosilanes and polycarbosilanes well explained their good compatibility. The UV-curing behavior and thermal properties of the photosensitive carbosilanes and their blend systems with polycarbosilanes were also studied. This work provides useful guidelines for selecting and designing photosensitive compounds have good compatibility with preceramic polymers.

Tetrahedron Letters published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C15H20O6, Quality Control of 15625-89-5.

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

Song, Mingzhang published the artcileEffect of viscoelasticity on the foaming behavior of long-chain branched polypropylene with different branching degrees analysed by using bubble-growth modelling, Recommanded Product: Trimethylolpropane triacrylate, the publication is Polymer (2022), 124397, database is CAplus.

Long-chain branched polypropylene (LCB-PP) was generated by a melt grafting reaction with trimethylolpropane triacrylate (TMPTA) as the grafting monomer and zinc dimethyldithiocarbamate (ZDMC) or styrene (St) as the co-monomers. High-temperature size exclusion chromatog. (HT-SEC) was used to characterize the mol. mass, mol. mass distribution and branching degree of the modified PP. Subsequently, linear and nonlinear viscoelasticity data were obtained by a small amplitude oscillatory shear (SAOS) test and uniaxial extensional viscosity measurement. The pressure balanced bubble-growth (PBB) model was used to calculate the critical coalescence radius (CCR) curves for PP to quant. correlate the viscoelasticity and foamability and evaluate the foamability of PP combined with batch foaming. It is shown that with increasing branching degree, the foam shows a better resistance to bubble coalescence, resulting in a more regular bubble structure and a higher expansion ratio. Moreover, viscosity should be controlled over an appropriate range for realizing good foamability; otherwise, excessive viscosity can suppress bubble growth and limit the expansion ratio. MPPZ4 modified with 4 wt% TMPTA and 0.4 wt% ZDMC showed the best foamability. A combination of the PBB model and batch foaming experiment is used to quant. explain the contribution of LCB to foaming.

Polymer published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C22H21N3O3S, Recommanded Product: Trimethylolpropane triacrylate.

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

Xue, Tanlong published the artcileA bis-acrylate functionalized enone as photoinitiator and crosslinker in photopolymerization, Synthetic Route of 15625-89-5, the publication is Progress in Organic Coatings (2022), 106587, database is CAplus.

Enone dyes have gained considerable interest in photoinitiation systems due to their facile synthesis, good light absorption, and photobleaching ability during photopolymerization However, besides acting as photoinitiator, little work was dedicated to developing new function for enone dyes in polymer synthesis by photopolymerization In this work, a bis-acrylate functionalized enone derivative (C3POAC) was synthesized and characterized, which is expected to serve not only as a photoinitiator but also as a crosslinker. Steady state photolysis was carried out to show the high photochem. reactivity of C3POAC with an amine co-initiator. The initiation efficiency of C3POAC towards different acrylate monomers was evaluated by real-time FTIR technol. In most cases, good polymerization profiles were obtained. In addition, C3POAC presented the dual role of photoinitiator and crosslinker in the photopolymerization of Bu acrylate.

Progress in Organic Coatings published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C7H16Cl2Si, Synthetic Route of 15625-89-5.

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

Su, Fang published the artcilePhotopolymerization and reaction sintering enabled generative shaping and material-forming of complex ceramic structures with high performance, Category: esters-buliding-blocks, the publication is Additive Manufacturing (2022), 102651, database is CAplus.

This study presents a novel combined generative shaping and material-forming (GSM) approach for preparing tritium breeder units for fusion reactors using 3D printing technol. For the first time, defect-free lithium-rich Li₄SiO₄ porous structures were successfully prepared by combining photopolymerization and reaction sintering processes based on the use of low-cost Li₂CO₃ and SiO₂ ceramic powders. Investigation was conducted on the preparation of the ceramic powder-based mixture slurry as well as the photopolymerization 3D printing and reaction sintering processes. Li₄SiO₄-based porous lattice ceramics with high purity, no obvious defects, and adjustable packing fraction were fabricated. The mech. properties of the samples prepared with different packing fractions were then evaluated. The prepared samples showed better mech. properties than the pebble bed structures with similar packing fractions. At a packing fraction of 92.10%, the crushing strength and elastic modulus reached 186.49 ± 0.04 MPa and 16.47 ± 0.03 GPa, resp. These results show that the combination of photopolymerization 3D printing and reaction sintering processes based on the use of low-cost ceramic powders has significant advantages in terms of flexibility and efficiency in structure design and fabrication and cost-effectiveness in material forming with enhanced performance, providing a promising route to produce high-performance tritium breeder structures for fusion technologies. In particular, the present combined method also paves a promising generalized way to enable effective generative structure-shaping and material-forming in the advanced ceramic manufacturing industry, not to mention that the preparation of high-performance Li₄SiO₄ tritium breeder units for fusion technologies.

Additive Manufacturing published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C16H24BF4Ir, Category: esters-buliding-blocks.

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

Wang, Kejie published the artcileSiC paste with high curing thickness for stereolithography, Recommanded Product: Trimethylolpropane triacrylate, the publication is Ceramics International (2022), 48(S19), 28692-28703, database is CAplus.

In this study, the method and mechanism of the improvement of the curing thickness of SiC by stereolithog. (SLA) were investigated, the rheol. properties of SiC paste were optimized, and the problem of cracking problem during debinding was solved. The best molding process for preparing SiC ceramics with the Ceramaker 900 equipment was studied. Oxidation at 1180°C for 1 h and hydroxylation with 0.6 mol/L H₂O₂ were the best modification processes for SiC powder. SiC paste with good rheol. properties and high curing thickness was prepared using a resin system of BPA, HDDA, TPGDA, TMPTA, DPHA, and A-BPEF (mass ratio = 9:7:5:20:15:6). The best debinding process for SLA SiC was segmented debinding. The bulk d., total porosity, and room temperature bending strength of the SiC ceramics obtained are 2.13 g/cm³, 10.2%, 229 MPa, resp. The nanoindentation elastic modulus and hardness of SLA SiC ceramics were found to be 18.7 and 1.66 GPa, resp. Through this process, a lattice structure of SiC parts with good surface quality was prepared

Ceramics International published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C18H23OP, Recommanded Product: Trimethylolpropane triacrylate.

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

Ren, Xiaozhen published the artcileA UV-LED excited photoinitiator with low toxicity and low migration for photocurable inks, Recommanded Product: Trimethylolpropane triacrylate, the publication is Dyes and Pigments (2022), 110133, database is CAplus.

With the improvement of public environmental protection awareness, the market share of LED in the photocuring field is also expanding rapidly, so it is necessary to develop matching photoinitiators. Here, we prepared a mol. (ND-1) possessing both co-initiating and polymerizable groups, and it exhibits a good initiation effect on acrylate monomers under UV-LED irradiation The double bond conversion rate reaches up to 80% especially for tripropylene glycol diacrylate (TPGDA). Due to excellent photocuring effect of ND-1, it can initiate monomer polymerization in the presence of color paste and was successfully applied to photocurable inks. In addition, ND-1 exhibits low migration and low toxicity, which is very important to promote the application of packaging with photocurable inks in the food, medical, personal care and tobacco fields. Finally, the photoinitiation mechanism of ND-1 was explored. The free radicals not only come from the cleavage of C-O bond, but also intermol. hydrogen abstraction.

Dyes and Pigments published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C15H20O6, Recommanded Product: Trimethylolpropane triacrylate.

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

Mei, W. T. published the artcilePreparation and UV curing properties of oxazolidinone-based acrylate derivatives, SDS of cas: 15625-89-5, the publication is Reactive & Functional Polymers (2022), 105250, database is CAplus.

The oxazolidinone-based acrylate derivatives were prepared by the oxa-Michael addition reaction of neopentyl glycol diacrylate (NPGDA), trimethylolpropane triacrylate (TMPTA) and ethylene glycol dimethacrylate (EGDMA) with 3-(2-hydroxyethyl)-2-oxazolidinone (Z1), which was prepared by the reaction of di-Me carbonate (DMC) with diethanolamine (DEA). The mol. structures of the products were characterized by FT-IR, ¹H NMR and electrospray ionization high resolution mass spectrometry (ESI-HRMS). Under initiated by 1 weight% 2-isopropyl-9H-thioxanthen-9-one (ITX) and 1 weight% 2-hydroxy-2-methyl-1-phenylpropan-1-one (Da-1173), the oxazolidinone- based acrylates were cured in 30 s with double bond conversion of 92% and 98%, resp. The photopolymerization activity is in the order of oxazolidinone-based acrylate > conventional acrylate with 3 weight% EDB > conventional acrylate. The first-order kinetics for oxazolidinone part indicates that the oxazolidinone group is a hydrogen donor, which can terminate the polymeric radicals, forming an active radical to re-initiate the polymerization HRMS anal. of oligomers extracted from the UV-cured film of Bu acrylate confirms further the role of oxazolidinone part, and the plausible UV polymerization mechanism was proposed. The composition of addition product of TMPTA with Z1 (named as TMPTA-Z1) with epoxy acrylate can be 3D printed forming various models with the hardness of 5H.

Reactive & Functional Polymers published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C15H20O6, SDS of cas: 15625-89-5.

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

Mei, W. T. published the artcilePreparation and UV curing properties of oxazolidinone-based acrylate derivatives, SDS of cas: 15625-89-5, the publication is Reactive & Functional Polymers (2022), 105250, database is CAplus.

The oxazolidinone-based acrylate derivatives were prepared by the oxa-Michael addition reaction of neopentyl glycol diacrylate (NPGDA), trimethylolpropane triacrylate (TMPTA) and ethylene glycol dimethacrylate (EGDMA) with 3-(2-hydroxyethyl)-2-oxazolidinone (Z1), which was prepared by the reaction of di-Me carbonate (DMC) with diethanolamine (DEA). The mol. structures of the products were characterized by FT-IR, ¹H NMR and electrospray ionization high resolution mass spectrometry (ESI-HRMS). Under initiated by 1 weight% 2-isopropyl-9H-thioxanthen-9-one (ITX) and 1 weight% 2-hydroxy-2-methyl-1-phenylpropan-1-one (Da-1173), the oxazolidinone- based acrylates were cured in 30 s with double bond conversion of 92% and 98%, resp. The photopolymerization activity is in the order of oxazolidinone-based acrylate > conventional acrylate with 3 weight% EDB > conventional acrylate. The first-order kinetics for oxazolidinone part indicates that the oxazolidinone group is a hydrogen donor, which can terminate the polymeric radicals, forming an active radical to re-initiate the polymerization HRMS anal. of oligomers extracted from the UV-cured film of Bu acrylate confirms further the role of oxazolidinone part, and the plausible UV polymerization mechanism was proposed. The composition of addition product of TMPTA with Z1 (named as TMPTA-Z1) with epoxy acrylate can be 3D printed forming various models with the hardness of 5H.

Reactive & Functional Polymers published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C15H20O6, SDS of cas: 15625-89-5.

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

Liu, Shaohui published the artcileEffect of Decarboxylation on the Photoinitiation Behavior of Nitrocarbazole-Based Oxime Esters, Recommanded Product: Trimethylolpropane triacrylate, the publication is Macromolecules (Washington, DC, United States) (2022), 55(7), 2475-2485, database is CAplus.

A series of 50 oxime esters bearing various substituents were designed and synthesized as photoinitiators (48 of them were never synthesized before and only B1 and B10 were reported). Good light absorption properties in the visible range were observed for these oxime esters. Some structures exhibited better photoinitiation abilities than diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) upon exposure to a LED@405 nm. Interestingly, PIs with Me substituent on the oxime ester group have better photoinitiation performance than the others. Substituent effects were investigated through MOs calculations, the detection of CO₂, and the investigation of the generated free radicals. The results demonstrate that the substituents on the oxime ester group exert major effects on the photoinitiation ability via the decarboxylation reaction. In addition, a chem. mechanism was proposed. 3D printed objects were successfully obtained by using the most reactive oxime ester as photoinitiator, and their thermal initiation behaviors of several oxime esters were also studied (dual thermal/photochem. initiator behavior).

Macromolecules (Washington, DC, United States) published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C15H20O6, Recommanded Product: Trimethylolpropane triacrylate.

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

Tang, Zhaoxian published the artcileCinnamoylformate derivatives photoinitiators with excellent photobleaching ability and cytocompatibility for visible LED photopolymerization, Formula: C15H20O6, the publication is Progress in Organic Coatings (2022), 106969, database is CAplus.

In this work, four Et cinnamoylformate derivatives photoinitiators (ECFs), which have good photobleaching ability and excellent cytocompatibility in LED-triggered photopolymerization, were designed and synthesized by a simple two-step reaction. The potential initiating and photobleaching mechanisms of ECFs under visible LED were researched by UV-visible absorption spectroscopy, NMR, high-resolution mass spectroscopy and ESR. The as-prepared photoinitiators Et p-methoxycinnamoyl formate (O-ECF) and Et p-methylmercaptocinnamoyl formate (S-ECF) exhibited much higher initiating rate under 405 nm and 455 nm LED compared to the com. photoinitiator 2-isopropylthioxanthone (ITX). More significantly, carbon-carbon double bonds of ECFs can polymerize in the presence of tertiary amine under the irradiation of 455 nm or 405 nm LED, which endows ECFs with good photobleaching performance and excellent migration stability and cytocompatibility. Furthermore, ECFs are able to greatly initiate deep-layer photopolymerization under 455 nm LED and the photopolymerization depth reached 7.0 cm after the irradiation for 20 min. This work also affords a new perspective for designing photoinitiators with good photobleaching performance.

Progress in Organic Coatings published new progress about 15625-89-5. 15625-89-5 belongs to esters-buliding-blocks, auxiliary class Polymerization Reagents,Crosslinkers, name is Trimethylolpropane triacrylate, and the molecular formula is C8H5F3O2S, Formula: C15H20O6.

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