Results 291 to 300 of about 303,095 (333)
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International Journal of Toxicology, 2023
The Expert Panel for Cosmetic Ingredient Safety reviewed newly available studies since their original assessment in 2005, along with updated information regarding product types and concentrations of use, and confirmed that these 22 methacrylate ester monomers are safe as used in nail enhancement products in the practices of use and concentration as ...
Wilbur, Johnson +12 more
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The Expert Panel for Cosmetic Ingredient Safety reviewed newly available studies since their original assessment in 2005, along with updated information regarding product types and concentrations of use, and confirmed that these 22 methacrylate ester monomers are safe as used in nail enhancement products in the practices of use and concentration as ...
Wilbur, Johnson +12 more
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European Polymer Journal, 1978
Abstract Copolymerizations of methyl methacrylate with the Li, Na and K salts of methacrylic acid have been studied in methanol solution at 60°. Reactivity ratios have been calculated by the methods due to Mayo and Lewis, Fineman and Ross and Peckham. The rate of copolymerization decreases as the size of the metal cation increases, in contrast to the
A. Hamoudi, I.C. McNeill
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Abstract Copolymerizations of methyl methacrylate with the Li, Na and K salts of methacrylic acid have been studied in methanol solution at 60°. Reactivity ratios have been calculated by the methods due to Mayo and Lewis, Fineman and Ross and Peckham. The rate of copolymerization decreases as the size of the metal cation increases, in contrast to the
A. Hamoudi, I.C. McNeill
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Isocyanato Urethane Methacrylates Derived from Hydroxyethyl Methacrylate
Journal of Dental Research, 1980Isocyanato urethane methacrylates were synthesized from five diisocyanates and hydroxyethyl methacrylate. They may be homopolymerized or copolymerized with other methacrylates by the usual free radical methods of initiation and have potential as adhesion-promoting agents for dentin.
J M, Antonucci +2 more
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Thermoforming polymethyl methacrylate
The Journal of Prosthetic Dentistry, 1995This study characterized a range of commercially available polymethyl methacrylate sheets with respect to molecular weight, residual monomer content, and glass transition temperature and then developed a thermoforming procedure that produced visually satisfactory thermoformed polymethyl methacrylate specimens.
R G, Jagger, A, Okdeh
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European Polymer Journal, 1979
Abstract The monomer reactivity ratios for radical copolymerizations of tributyltin methacrylate (monomer-1) with methyl methacrylate, propyl methacrylate and butyl methacrylate have been found as r 1 = 0.79 and r 2 = 1.0, r 1 = 0.58 and r 2 = 0.9, and r 1 = 0.65 and r 2 = 0.68 respectively.
N.A. Ghanem +3 more
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Abstract The monomer reactivity ratios for radical copolymerizations of tributyltin methacrylate (monomer-1) with methyl methacrylate, propyl methacrylate and butyl methacrylate have been found as r 1 = 0.79 and r 2 = 1.0, r 1 = 0.58 and r 2 = 0.9, and r 1 = 0.65 and r 2 = 0.68 respectively.
N.A. Ghanem +3 more
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Enzymatic synthesis of sorbitan methacrylate: Comparison of methacrylic acid and vinyl methacrylate
Biochemical Engineering Journal, 2006Abstract “Biomaterials” is a generic term which refers to a variety of medical material which is designed to be in direct contact with living tissue. Clearly, biomaterials must be carefully and microscopically fabricated for optimal acceptance within the living organism, in both functional and structural senses. In this study, the enzymatic synthesis
Gwi-Taek Jeong +6 more
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Journal of Biomedical Materials Research, 1997
Five binary formulations were prepared from methyl methacrylate (MMA) and methacrylic acid (MAA) monomers, and six ternary formulations were prepared from polysols of 30% wt polymethyl methacrylate (PMMA)/MMA and MAA. Using thermal analyses (DSC and TGA) the polymerization kinetics, condition of postcuring, relative amount of residual monomers, and ...
T, Chen, R P, Kusy
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Five binary formulations were prepared from methyl methacrylate (MMA) and methacrylic acid (MAA) monomers, and six ternary formulations were prepared from polysols of 30% wt polymethyl methacrylate (PMMA)/MMA and MAA. Using thermal analyses (DSC and TGA) the polymerization kinetics, condition of postcuring, relative amount of residual monomers, and ...
T, Chen, R P, Kusy
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