Category: 1985-51-9

Loshaek, S. published an article in 1955, the title of the article was Cross-linked polymers. II. Glass temperatures of copolymers of methyl methacrylate and glycol dimethacrylates.Formula: C13H20O4 And the article contains the following content:

cf. C.A. 47, 11800h. Glass temperatures (Tg) were determined for copolymers of Me methacrylate and from 0 to 100% of the dimethacrylates of ethylene glycol (I), decamethylene glycol (II), and 2-ethyl-2-butyl-1,3-propanediol (III), and for copolymers containing 0-17 mole % of the dimethacrylate of 2,2-dimethylpropanediol. Maximum were observed in the Tg-mole fraction of dimethacrylate for the II and III copolymers. The results were considered to be caused by changes in both average copolymer composition and degree of cross-linking. The former was evaluated for I from the observed Tg-composition relation for copolymers of Me methacrylate with ethylene glycol monomethacrylate monoisobutyrate. Assuming additivity, cross-linking alone was found to increase Tg linearly with the degree of cross-linking, the proportionality constant being of the same order of magnitude as reported for styrenedivinylbenzene copolymers (cf. preceding abstract). The magnitude of the increase in Tg was independent of the nature of the cross-linking agent. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Formula: C13H20O4

2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas:1985-51-9) belongs to ethers. Oxygen is more electronegative than carbon, thus the alpha hydrogens of ethers are more acidic than those of simple hydrocarbons. They are far less acidic than alpha hydrogens of carbonyl groups (such as in ketones or aldehydes), however. Formula: C13H20O4

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Dondoy, J.; Alloing-Bernard, A.; Renson-Deneubourg, C. published an article in 1971, the title of the article was Functional analysis and gas-chromatographic separation of perfluorinated mono- and diesters of diols.Application In Synthesis of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) And the article contains the following content:

Functional analysis. methods for fluorinated esters are discussed. Perfluorocarboxylic acid esters, such as Et perfluorooctanoate, are titrated in neutralized EtOH with 0.5N alc. KOH. The error for the above compound was ±1.8%. The classical saponification method must be used for esters F3C(CF2)nCH2CO2R (R = alkyl). When the above method is used for ethylene glycol acrylate perfluorooctanoate it specifically determines the perfluorinated acid. Hydroxyl numbers are determined by HClO4-catalyzed acetylation, and residual acidity by NH4OH titration For chromatog. of the esters a suitable stationary phase is Plastinol on a Gas Pack F support. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Application In Synthesis of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

The Article related to perfluorinated ester functional analysis, acid number perfluorocarboxylic ester, hydroxyl number perfluorocarboxylic ester, functional groups and other aspects.Application In Synthesis of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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On May 31, 1979, Kaetsu, Isao; Kumakura, Minoru; Yoshida, Masaru published an article.Name: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) The title of the article was Enzyme immobilization by radiation-induced polymerization of hydrophobic glass-forming monomers at low temperatures. And the article contained the following:

Enzyme immobilization was studied by radiation-induced polymerization of hydrophobic glass-forming monomers at low temperatures The polymerized hydrophobic composite was generally obtained in microspheric form. Enzymic activity showed little decrease with repeated use in these systems. The particle size of the microsphere increased with increasing monomer concentration, and activity yield had a maximum at an optimum monomer concentration Immobilization by copolymerization of hydrophilic and hydrophobic comonomers was also investigated and a maximum activity yield was found at a certain monomer concentration A model scheme for immobilization at low temperatures was proposed and discussed. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Name: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

The Article related to microsphere enzyme immobilization, enzyme immobilization radiation induced polymerization, Enzymes: Other and other aspects.Name: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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On December 31, 2020, Li, Xuefeng; Chen, Lingying; Han, Weifang; Ge, Chunhua; Guan, Hongyu; Zhang, Rui; Zhang, Xiangdong published an article.Recommanded Product: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) The title of the article was Preparation and Thermal Properties of Shape-stabilized Paraffin/ NPGDMA/BN Composite for Phase Change Energy Storage. And the article contained the following:

Paraffin, as an excellent phase change material (PCM), is limited by the leakage problem and low thermal conductivity In this research, a novel paraffin/neopentyl glycol dimethacrylate/boron nitride (paraffin/NPGDMA/BN) composite PCM was successfully prepared via a phys. mixing process. NPGDMA in paraffin/NPGDMA/BN composite PCM was cured by UV light under the action of photo initiator, which can improve the shape stability to avoid the leakage of paraffin in the process of phase change. By comparing the leakage rate, latent heat, and thermal conductivity, the optimal mass ratio of paraffin and NPGDMA was selected to be 7 : 3. It was showed that the presence of 5 wt% BN led to increasing in thermal conductivity by up to 59%. The microstructure of the composite PCMs was characterized by SEM, FTIR, and XRD. The composite PCMs can be processed into a variety of shapes by using molds. The paraffin/NPGDMA/BN composite PCM exhibited a significantly improved shape stability and large phase change enthalpy of 123.0 J/g. The leakage rate of paraffin/NPGDMA/BN was much improved after being soaked with petroleum ether. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Recommanded Product: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

The Article related to stabilized paraffin npgdma bn composite phase change energy storage, Placeholder for records without volume info and other aspects.Recommanded Product: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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On November 30, 2021, Dimitriadi, M.; Petropoulou, A.; Anagnostou, M.; Zafiropoulou, M.; Zinelis, S.; Eliades, G. published an article.Electric Literature of 1985-51-9 The title of the article was Effect of curing mode on the conversion and IIT-derived mechanical properties of core build-up resin composites. And the article contained the following:

The aim of the study was to evaluate the degree of conversion and the mech. properties of five composite core build-up materials polymerized in dual-curing and self-curing modes. The materials tested were: Clearfil DC Core Plus (CF), Gradia Core (GC), Luxacore-Z Dual Smartmix (LX), Multicore Flow (MC) and Paracore (PC). Disk-shaped specimens were prepared from each material; half the specimens were light-cured, whereas the rest were only self-cured. After a 3-wk storage period (dark/dry/37 °C) the Martens Hardness, Indentation Modulus, and Elastic Index were determined by instrumented indentation testing (IIT), while the degree of conversion was assessed by ATR-FTIR spectroscopy. Statistical anal. was performed by 2-way ANOVA and post-hoc testing (α = 0.05). The dual-curing mode resulted in statistically higher Martens Hardness and Elastic Index than the self-curing mode in most materials but showed insignificant differences in Indentation Modulus. MC and PC demonstrated significantly higher degree of conversion in both curing modes. Overall, the self-curing mode was inferior to the dual-curing in conversion and mech. properties for most products, despite their differences in monomer composition and filler loading. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Electric Literature of 1985-51-9

The Article related to core buildup resin composite curing monomer compound, atr-ftir, conversion, core build-up composites, iit, mechanical properties, Placeholder for records without volume info and other aspects.Electric Literature of 1985-51-9

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Matsumae, Izumi; Wakasa, Kunio; Takahashi, Hitoshi; Senoo, Hirofumi; Morikawa, Akihiro; Urabe, Hidenori; Fujitani, Morioki; Satou, Naoki; Shintani, Hideaki; Yamaki, Masao published an article in 1996, the title of the article was Effect of diluent monomers on color change vector in visible light-cured resin.COA of Formula: C13H20O4 And the article contains the following content:

Studies on the effect of diluent monomers (TEGDMA, GDMA, NPGDMA ; using Bis-GMA as base monomer) on color change vector in visible light-cured resin indicated that there is a high correlation between color changes and the ζ-potential measured. These results suggested that the surface potential played an important role in dental resin coloring. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).COA of Formula: C13H20O4

The Article related to diluent monomer photocurable dental resin color, Pharmaceuticals: Prosthetics and Medical Goods and other aspects.COA of Formula: C13H20O4

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Yamada, A.; Sakurai, Y.; Nakamura, K.; Hanyu, F.; Yoshida, M.; Kaetsu, I. published an article in 1980, the title of the article was The anticancer drug capsule with controlled-release for a long time and change of release rate.Safety of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) And the article contains the following content:

The capsule was prepared containing mitomycin-C (I) [50-07-7], poly(Me methacrylate) [9011-14-7], together with glass-forming monomers. The capsule was irradiated with 1 × 106 rad γ-ray. The capsule when located around or in inoperable malignant tumor, caused no severe secondary effects like leukopenia. Changing the volume of anticancer drug, amount of γ-irradiation, and kind of monomer, the release period could be extended from 2-4 wk to 140 days. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Safety of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

The Article related to neoplasm inhibitor capsule controlled release, Pharmaceuticals: Prosthetics and Medical Goods and other aspects.Safety of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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On October 31, 1978, Satoh, Hiroshi; Nakabayashi, Nobuo; Masuhara, Eiichi published an article.Safety of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) The title of the article was Effect of cross-linking agents on mechanical properties of a fluid resin. And the article contained the following:

The effect of crosslinking agents [2,2-bis(4-methacryloxyethoxyphenyl)propane [24448-20-2], trimethylolpropane trimethacrylate [3290-92-4], neopentylglycol dimethacrylate [1985-51-9], hexamethylene glycol dimethacrylate [6606-59-3] and poly(1,2-butadiene) [9003-17-2]] on phys. properties of the liquid resin poly(Me methacrylate) [9011-14-7] was investigated. The phys. properties tested included Brinell hardness, tensile strength, impact strength and transverse strength. Neopentyl glycol dimethacrylate was the best crosslinking agent among the 5 compounds tested, as reflected by their phys. properties. The optimum concentration of added neopentyl glycol dimethacrylate was 5%. Microscopic examinations revealed that the diffusibility of crosslinking agents into the liquid resin powder profoundly affected the phys. properties. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Safety of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

The Article related to dental polymethacrylate property crosslinker, Pharmaceuticals: Prosthetics and Medical Goods and other aspects.Safety of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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On July 31, 1979, Horiuchi, Akira published an article.Quality Control of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) The title of the article was Aging effect on mechanical properties in fluid resin. Part 2. Affect of the crosslinking agent, neopentyl glycol dimethacrylate. And the article contained the following:

Brinell hardness and tensile strength were measured, weight decrease of specimens due to evaporation of residual monomer were also determined, and the relationship between amount of residual monomer and the mech. properties was studied. The addition of neopentyl glycol dimethacrylate [MeC(:CH2)CO2CH2]2CMe2] (I) [1985-51-9] in Me methacrylate [80-62-6] improved the mech. properties nearly the same as the heat processed resins and was effective in decreasing residual monomers. The rate of polymerization increased and the heat of polymerization decreased the temperature of the curing mass. Properties of the new I liquid resin must be improved by loss of residual monomer and crosslinking structure. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Quality Control of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

The Article related to dental resin neopentyl glycol methacrylate, Pharmaceuticals: Prosthetics and Medical Goods and other aspects.Quality Control of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On December 15, 2001, Yourtee, D. M.; Smith, R. E.; Russo, K. A.; Burmaster, S.; Cannon, J. M.; Eick, J. D.; Kostoryz, E. L. published an article.Category: esters-buliding-blocks The title of the article was The stability of methacrylate biomaterials when enzyme challenged: kinetic and systematic evaluations. And the article contained the following:

This study addressed whether methacrylate monomers and polymers used in dentistry might degrade from enzymolysis by acetylcholinesterase (ACHE), cholesterol esterase (CHE), porcine liver esterase (PRLE), and a pancreatic lipase (PNL). Short (hour) and long-term (day) exposures were performed. Product ratios were used to determine surface hydrolysis of the polymeric materials. Enzyme kinetics were studied for the monomers when challenged by ACHE, CHE, and PRLE. In the case of PRLE, the Vmax for the dimethacrylate substrates varied slightly, but amounted to as much as 10% of that of p-nitrophenylacetate. The Km for triethylene glycol dimethacrylate (TEGDMA) was 197 μM for ACHE and 1107 μM for CHE. The Vmax was 2.7 nmol/min for ACHE and 3.5 nmol/min for CHE. TEGDMA was converted by CHE at 2% the rate of cholesteryl oleate. Long-term incubations of monomers with CHE and ACHE produced degrees of hydrolysis that evidenced structure dependency in the ability of the enzymes to effect hydrolysis. Particularly resistant were aromatic derivatives and those with branching in methacrylate linkages. Overall, the study confirms the ability of physiol. important esterases to catalyze the hydrolysis of biomaterial methacrylates. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Category: esters-buliding-blocks

The Article related to methacrylate biomaterial enzyme stability, Pharmaceuticals: Prosthetics and Medical Goods and other aspects.Category: esters-buliding-blocks

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Ester – an overview | ScienceDirect Topics