Category: 1985-51-9

On September 30, 2011, Kawano, Syumi; Suzuki, Shigeru published an article.Electric Literature of 1985-51-9 The title of the article was A study of chemical substances leaching from babies’ toys made of plastics by LC/MS. And the article contained the following:

Brominated flame retardants (BFRs) leaching in water (for 24h), amylase aqueous solution (for 24h) and ethanol (for 10) minutes from 18 kinds of babies’ toys were determined by LC/MS, and the some other chems. were identified by LC/ToFMS. The aim of the study is to determine or identify chems. leaching from baby toys with a method roughly simulating baby’s behavior of licking, sucking or biting. Bisphenol A leaching in water and ethanol were 3∼430 ng/item and 1.3∼92 ng/item, resp. Tribromophenol leaching in water, amylase aqueous solution and ethanol were 13∼220 ng/item, 0.5∼200 ng/item and 0.1∼0.2 ng/item, resp. Tetrabromobisphenol A leaching in water, amylase aqueous solution and ethanol were 5.0∼590 ng/item, 0.4∼6.9 ng/item and 2.3∼4.4 ng/item, resp. Hexabromocyclododecane diastereoisomers were not found in water in the limit of detection of 1 ng/item, however those in amylase aqueous solution and ethanol were 3.0∼18 ng/item and 0.6∼25 ng/item, resp. Chems. identified in the leachates by LC/ToFMS were a nucleating agent, a light stabilizer, an intermediate in organic syntheses which were plastic synthesizers for food package, plastic lens, liquid crystal and other plastic items, and lubricants. It is suggested that most of plastic baby toys would be contaminated with BFRs and various chem. additives not used for baby toys. 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 baby toy plastic chem substance leaching lcms, Plastics Manufacture and Processing: Chemical Properties Of Resins and other aspects.Electric Literature of 1985-51-9

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On October 31, 1982, Fujisawa, S.; Kadoma, Y.; Masuhara, E. published an article.Product Details of 1985-51-9 The title of the article was Action of drugs, detergents, and monomers on liposomes. And the article contained the following:

The interactions of 16 organic compounds used in dentistry with phospholipid bilayers of multilamellar lecithin-cholesterol liposomes were studied to clarify actions of the compounds in biol. systems. colchicine  [64-86-8], dimethyl-p-toluidine  [99-97-8], And salicylic acid  [69-72-7] had a stabilizing effect on liposomes in wide concentrations, whereas phenol   [108-95-2], m-cresol  [108-39-4], p-chlorophenol  [106-48-9], eugenol  [97-53-0], barbituric acid  [67-52-7], o-ethoxybenzoic acid  [134-11-2], mefenamic acid  [61-68-7], methyl methacrylate  [80-62-6], neopentylglycol dimethacrylate  [1985-51-9], toluensulfonyl-N-ethylamide  [26914-52-3], and triton x-100  [9002-93-1] had a stabilizing effect at low and a labilizing effect at high concentrations chloroform  [67-66-3] Had a stabilizing effect at 0.05 and 0.5 mM and a labilizing action at 0.005 mM. prednisolone  [50-24-8] Had a stabilizing effect at 0.05 mM and caused liposomal disruption at ≥0.5 mM. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Product Details of 1985-51-9

The Article related to dentistry drug liposome interaction, Pharmacology: Other (All Agents and Effects Not Otherwise Assignable) and other aspects.Product Details of 1985-51-9

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On March 31, 2011, Archana; Gupta, D. C. published an article.Application In Synthesis of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) The title of the article was Synthesis and characterization of macroporous acrylonitrile-dimethacrylates copolymer beads. And the article contained the following:

Macroporous acrylonitrile-dimethacrylate copolymer beads were prepared by suspension polymerization of acrylonitrile (AN) and ethylene glycol dimethacrylate (EGDMA), bisphenol A dimethacrylate (BADMA), butanediol dimethacrylate (BDDMA) or neopentyl glycol dimethacrylate (NGDMA) using AIBN as an initiator and starch as a suspending agent in water at 70° under nitrogen. The copolymer beads were characterized using FTIR, TGA and determining apparent d. and swelling degree. The solvent effect on the surface area of AN-EGDMA copolymer was also investigated. The formation of macroporous structure due to incorporation of diluents was confirmed by increased swelling, BET surface area and surface morphol. 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 macroporous acrylonitrile dimethacrylate copolymer bead, Chemistry of Synthetic High Polymers: Organic Addition Polymerization and other aspects.Application In Synthesis of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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On January 5, 2008, Fedorov, Andrei V.; Ermoshkin, Andrey A.; Neckers, Douglas C. published an article.Reference of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) The title of the article was Remote polymerization of coatings with the release of borane from its amine complex. And the article contained the following:

We define remote polymerization as the formation of a photopolymer without the benefit of either light or a photoinitiator. In the reported experiments, a radical-generating trialkylborane-oxygen system was used with an active trialkylborane that was released from its stable amine complex by a vaporous (i.e., gas-phase) reagent. Acrylates and methacrylates were polymerized after oxidative radical formation from the highly reactive borane. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Reference of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

The Article related to remote radical polymerization coating borane release amine complex, Chemistry of Synthetic High Polymers: Organic Addition Polymerization and other aspects.Reference of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Gonzato, Carlo; Pasetto, Pamela; Bedoui, Fahmi; Mazeran, Pierre-Emmanuel; Haupt, Karsten published an article in 2014, the title of the article was On the effect of using RAFT and FRP for the bulk synthesis of acrylic and methacrylic molecularly imprinted polymers.Related Products of 1985-51-9 And the article contains the following content:

Molecularly imprinted polymers (MIPs) are synthetic polymeric receptors, capable of specifically binding a target mol., just like a biol. antibody. There has been a recent trend to improve the properties of these materials by using modern methods of controlled radical polymerization (CRPs) for their synthesis. Despite the recognized advantages associated with their “living character”, the effect of the “controlled nature” has still to be clearly demonstrated. This is far from obvious as the high amounts of short crosslinkers normally used for their synthesis complicate the formation of homogeneous polymer networks. In order to gain more insights into the potential benefits for the binding properties of MIPs resulting from the use of CRPs, the imprinting of a model target (S-propranolol) has been used to compare reversible addition-fragmentation chain transfer polymerization (RAFT) and free-radical polymerization (FRP) on acrylic and methacrylic matrixes. While most MIPs are based on methacrylates, we used acrylates as a “difficult imprinting matrix” for comparison. In fact, the absence of the Me groups in their polymer back-bone reduces their entanglement, resulting in a more flexible network. This renders the material more difficult to imprint, and at the same time makes it easier to evaluate the effects of RAFT polymerization and FRP on structural parameters and thus binding properties. Moreover, we also progressively reduced the amount of crosslinking in order to explore the effects of RAFT and FRP on a wider range of scaffold rigidities. Although MIPs are normally highly crosslinked, some recent emerging applications require lower degrees of crosslinking. Binding experiments, SEM, BET, DMA, swelling and nanoindentation analyses revealed that RAFT is effective in promoting the synthesis of more homogeneous networks compared to FRP, even at very high crosslinker contents, which results in higher target affinities, especially in the case of acrylates. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Related Products of 1985-51-9

The Article related to polyacrylate polymethacrylate molecularly imprinted polymer raft radical polymerization, Chemistry of Synthetic High Polymers: Organic Addition Polymerization and other aspects.Related Products of 1985-51-9

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

On January 31, 1981, Sivergin, Yu. M. published an article.Reference of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) The title of the article was Dielectric relaxation in oligoester acrylates and terpolymers on their basis. And the article contained the following:

Oligoester acrylates showed 2 dielec. relaxation processes at 100-300 K, with the high temperature-low frequency dispersion being designated the α and the low temperature-high frequency dispersion, the β’ process. The α maximum corresponded to the glass transition and was at the highest temperature for an acrylate containing Cl and the lowest temperature for the least polar compound, which also had a low loss factor. The β’ process was caused by internal motion of the polar group-containing kinetic units in the oligomer chain, and was mainly due to the motion of carbonate group in mols. that contain these. Above the glass temperature, all samples had a rapid increase of the loss factor with temperature In the case of oligoester acrylate polymers, those based on diacrylates of ethylene, tetramethylene, and decamethylene glycols, the relaxation observed at <275 K was a β process caused by motions of carboxylate groups bound to the main chain. The dielec. relaxation of the polymer based on triethylene glycol dimethacrylate at <275 K was a β' process caused by the motion of the C-O-C group. At 300-400 K, a β process caused by local motion of macromol. chain members adjacent to carboxylate groups was observed in this polymer. A wide variety of previously reported results was also discussed. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Reference of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

The Article related to oligoester acrylate dielec relaxation, Plastics Manufacture and Processing: Physical Properties and Testing Methods and other aspects.Reference of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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Ester – an overview | ScienceDirect Topics

Usmanov, S. M.; Berlin, A. A.; Kochervinskii, V. V.; Sivergin, Yu. M.; Shashkova, V. T.; Zelenev, Yu. V. published an article in 1976, the title of the article was Dielectric relaxation in oligoester acrylates.Name: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) And the article contains the following content:

The dielec. relaxation behavior for 4 oligoester acrylates (OEA) showed that glassification in the OEA was of a cooperative nature and could be described by the Onsager model. The OEA studied were α,ω-bis(methacryloyloxy)-2,2-dimethylpropylene [1985-51-9] and the α,ω-bis(methacryloyloxyethyleneoxycarbonyloxy) derivatives of propylene [60028-80-0], 2,2-dimethylpropylene [54547-48-7], and 2,2-dichloropropylene [61550-96-7]. The relaxation time spectra of the OEA reflected contributions by different forms of high-frequency intramol. motion during the α relaxation process and by the cooperative occurrence of glassification via strong intermol. interaction. The cooperative nature of the α relaxation mechanism was also indicated by low activation energy values. Calculations using the Frelikh (1960) theory for the B-T dependence at temperatures above the glass temperature indicated a nonordered orientation of dipoles. 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 dielec relaxation oligoester acrylate, glass transition oligoester acrylate, Plastics Manufacture and Processing: Physical Properties and Testing Methods and other aspects.Name: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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Kalachandra, S.; Kusy, R. P. published an article in 1991, the title of the article was Comparison of water sorption by methacrylate and dimethacrylate monomers and their corresponding polymers.Product Details of 1985-51-9 And the article contains the following content:

Water sorption of some glycol dimethacrylates (GDM) and alkyl methacrylates (AM) was determined by Karl-Fischer anal. After γ-irradiation, the corresponding polymers were characterized in terms of percentage water uptake (gravimetrically), diffusion coefficient (D), and contact angle (θ) measurements. Water sorption of the polymers approximated Fick’s law. Ignoring the double bond contribution, the weight per cent O content (WPO), which was indicative of hydrophilic character of these materials, was calculated and correlated with the total O content present in each monomer mol. A linear relationship between the WPO and percentage water uptake was observed in a series of 4 GDM’s and 8 linear AM’s. Their corresponding polymers conformed to a linear correlation between the WPO and θ. On the basis of its WPO, bisphenol A-bis(2-hydroxypropyl) methacrylate sorbed less water than expected because an intramol. H bond was present. The rapid initial rates observed in soft Me methacrylate polymers were attributed to the water soluble impurities present in the matrix. The D values of the networks based on difunctional methacrylates were generally lower than Me methacrylates presumably because of the highly crosslinked nature of the former. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Product Details of 1985-51-9

The Article related to water sorption methacrylate monomer polymer, Physical Properties of Synthetic High Polymers: Physical Properties Of Polymers and other aspects.Product Details of 1985-51-9

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Makuuchi, K.; Hagiwara, M. published an article in 1984, the title of the article was Radiation vulcanization of natural rubber latex with polyfunctional monomers – II.Reference of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) And the article contains the following content:

Natural rubber latexes were vulcanized by γ-rays with 2 polyfunctional monomers, neopentyl glycol diacrylate (I) [2223-82-7] and neopentyl glycol dimethacrylate (II) [1985-51-9]. In comparison with I, II was more soluble in rubber particles, but it was less effective as an accelerating agent for the vulcanization because of the smaller rate of polymerization On the other hand, the colloidal stability of the latex containing I was low because it was localized on the surface of rubber particles due to its poor solubility in the particles. The solubility of I was improved by adding I with solvents. The maximum tensile strength of the irradiated latex film was 350 kg/cm2 at 3 Mrad. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Reference of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

The Article related to natural rubber diacrylate vulcanization accelerator, dimethacrylate vulcanization accelerator natural rubber, Synthetic Elastomers and Natural Rubber: Vulcanization, Curing, and Crosslinking and other aspects.Reference of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)

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On March 31, 1984, Makuuchi, Keizo; Hagiwara, Miyuki published an article.Related Products of 1985-51-9 The title of the article was Radiation vulcanization of natural rubber latex with polyfunctional monomers. And the article contained the following:

Natural rubber latex was irradiated with γ-rays from 60Co source in the presence of polyfunctional monomers to accelerate the vulcanization of rubber mols. Hydrophobic monomers were more effective than hydrophilic monomers in accelerating the vulcanization of natural rubber, presumably due to the high solubility of the former in rubber particles. Of the 26 polyfunctional monomers studied, neopentyl glycol dimethacrylate (I) [1985-51-9] exhibited the highest efficiency in accelerating the vulcanization. Advantages of using I included high colloidal stability of the irradiated latex and high heat resistance of the dried rubber film. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Related Products of 1985-51-9

The Article related to radiation vulcanization natural rubber latex, polyfunctional monomer vulcanization accelerator, neopentyl glycol methacrylate vulcanization accelerator, Synthetic Elastomers and Natural Rubber: Vulcanization, Curing, and Crosslinking and other aspects.Related Products of 1985-51-9

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