Results 261 to 270 of about 6,932 (305)

Methacrylate Ester Monomers

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, Wilma F, Bergfeld, Donald V, Belsito, David E, Cohen, Curtis D, Klaassen, Daniel C, Liebler, James G, Marks, Lisa A, Peterson, Ronald C, Shank, Thomas J, Slaga, Paul W, Snyder, Monice, Fiume, Bart, Heldreth   +12 more
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Miscibility of poly(methoxymethyl methacrylate) and poly(methylthiomethyl methacrylate) with poly(methyl methacrylate)

Polymer Bulletin, 1990
Poly(n-propyl methacrylate) is known to be immiscible with poly(methyl methacrylate) (PMMA). However, we have found that poly(methoxymethyl methacrylate) is miscible with PMMA, indicating the importance of ether oxygen atoms in achieving miscibility. On the other hand, poly(methylthiomethyl methacrylate) is immiscible with PMMA.
Goh, S.H., Lee, S.Y.
openaire   +1 more source

Upcycling polymethyl methacrylate to methacrylic acid

Reaction Chemistry & Engineering
Upcycling PMMA to methacrylic acid rather than methyl methacrylate is a viable economic alternative to treat end-of-life plastic.
Yanfa Zhuang, Nooshin Saadatkhah, Tien-Dat Nguyen, Jacopo De Tommaso, Clive Yi Jie Ng, Chunyu Wang, Abdellah Ajji, Gregory S. Patience   +7 more
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Microstructure of copolymers of methyl methacrylate with ethyl methacrylate

European Polymer Journal, 1988
Abstract The reactivity ratios for the copolymerization of methyl and ethyl methacrylates were calculated by the method of Kelen and Tudos. The triad sequence distributions were then determined by means of a computer program due to Harwood. The calculated distributions agree well with those found by 13 C- 1 H-NMR spectroscopy.
A.S. Brar, G.S. Kapur, S.K. Dubey
openaire   +1 more source

Stereoregular Copolymers of Methacrylic Acid and of Methyl Methacrylate

Journal of Macromolecular Science: Part A - Chemistry, 1971
Abstract Different techniques and mechanisms of hydrolysis of isotactic, syndiotactic, and atactic PMMA are compared for over-all rates and reaction yields. A combined hydrolysis using a mixture of hydriodic and acetic acid gave the best results, and included the conservation of tacticity and size of the acid-ester copolymers obtained.
Eric Selegny, Philippe Segain
openaire   +1 more source

Elastic and swelling behavior of 2-hydroxyethyl methacrylate, diethylene glycol methacrylate, and methacrylic acid copolymers

Journal of Applied Polymer Science, 1997
The elastic and swelling behavior of copolymers of 2-hydroxyethyl methacrylate, diethylene glycol methacrylate, and methacrylic acid crosslinked with ethylene glycol dimethacrylate has been studied. In the range of copolymer composition studied, Young's modulus of the swollen networks increases with the content of methacrylic acid, and its dependence ...
Ivan Krakovský, Miroslava Jelínková, Jiří Vacík   +2 more
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Preparation of methacrylate monoliths

Journal of Separation Science, 2007
AbstractRigid macroporous polymers developed in the early 1990s are widely used as efficient stationary phases for all types of chromatographic separations. The main advantages of so‐called monolithic supports are their high hydraulic permeability and the dominance of the convection over the diffusion mechanism of mass‐exchange under dynamic conditions
Evgenia G, Vlakh, Tatiana B, Tennikova
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Development of reactive methacrylates based on glycidyl methacrylate

Journal of Polymer Science Part A: Polymer Chemistry, 2010
AbstractSix methacrylate monomers have been synthesized for use as reactive diluents in dental composites and evaluated to investigate the relationship between molecular structure and monomer reactivity. Four were synthesized by reactions of glycidyl methacrylate (GMA) with various acids, 2‐(2‐methoxyethoxy)acetic acid (1), 2‐(2‐(2‐methoxyethoxy)ethoxy)
Ozlem Karahan, Kinyas Aydin, Seda Edizer, Nihan Odabasi, Duygu Avci   +4 more
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A study of the copolymerization of hydroxyethyl methacrylate and tetrahydrofurfuryl methacrylate

Journal of Polymer Science Part A: Polymer Chemistry, 1999
The free radical copolymerizations of hydroxyethyl methacrylate and tetrahydrofurfuryl methacrylate have been investigated at 50 degrees C. The compositions of polymers prepared at low conversions have been determined using C-13-NMR, and the glass transition temperatures determined by DSC.
Ghi, PY, Hill, DJT, Whittaker, AK
openaire   +2 more sources

Polymerization of Methyl Methacrylate

Nature, 1946
IN a general survey of the polymerization of vinyl compounds using the method previously described1, we have studied methyl methacrylate, and have found that it presents features of some interest.
M J S, DEWAR, C H, BAMFORD
openaire   +2 more sources