Results 271 to 280 of about 264,703 (294)
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Cationic activated monomer polymerization of heterocyclic monomers
Progress in Polymer Science, 1999Abstract In the first part of this review the meaning of activation is discussed and selected examples of polymerizaton processes in which activation of monomer is required prior to actual propagation are presented. In some systems, activation of monomer proceeds with such a strong interaction between an activator and monomer that a new chemical ...
Stanislaw Penczek, Przemysław Kubisa
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European Radiology, 1996
The 10-year-long debate regarding high-os-molar ionic vs low-osmolar nonionic contrast media has ceased. Now we are confronted with at least eight nonionic monomers and two nonionic dimers. Do these ten contrast agents differ from each other? The manufacturers say yes, but in clinical practice differences have, with a few exceptions, turned out to be ...
F. Stacul, Henrik S. Thomsen
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The 10-year-long debate regarding high-os-molar ionic vs low-osmolar nonionic contrast media has ceased. Now we are confronted with at least eight nonionic monomers and two nonionic dimers. Do these ten contrast agents differ from each other? The manufacturers say yes, but in clinical practice differences have, with a few exceptions, turned out to be ...
F. Stacul, Henrik S. Thomsen
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SURFACE EXPLOSION IN AUTOCATALYTIC MONOMER-MONOMER REACTIONS
Fractals, 1996A lattice model of the A-B type has been introduced recently to describe temporal oscillations and pattern formation for the NO-CO reaction catalyzed by a Pt surface. Under certain experimental conditions one observes the rapid reactional removal of an adsorbed layer upon nucleation — a direct consequence of the autocatalytic nature of the reaction ...
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Kinetics of monomer-monomer surface catalytic reactions
Physical Review A, 1992We study the kinetics of an irreversible monomer-monomer model of heterogeneous catalysis. In this model, two reactive species, A and B, adsorb and stick to single sites of a catalytic substrate. Surface reactions are assumed to occur only between dissimilar species that are nearest neighbors on the substrate. The kinetics of the process are studied in
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Journal of Chromatography A, 1986
Abstract The possibilities for the separation of a mixture of aliphatic C 1 C 18 alkyl esters of acrylic and methacrylic acids have been studied on glass capillary columns with non-polar (OV-101 and SE-54) and polar (SP-1000) phases under temperature-programmed conditions.
Jan Táborský +2 more
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Abstract The possibilities for the separation of a mixture of aliphatic C 1 C 18 alkyl esters of acrylic and methacrylic acids have been studied on glass capillary columns with non-polar (OV-101 and SE-54) and polar (SP-1000) phases under temperature-programmed conditions.
Jan Táborský +2 more
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Cyanoacrylate Monomers As an Adhesive
Archives of Surgery, 1971The tensile strengths of various substrate-substrate bonds and substrate-skin bonds using isobutyl cyanoacrylate and β,β,β-trifluoro-isopropyl cyanoacrylate were studied. All materials produced strong bonds with skin with either isobutyl cyanoacrylate or MBR-4197. Tissues adhesives will bind a variety of materials to tissues securely.
Teruo Matsumoto +3 more
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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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Saturation transition in a monomer-monomer model of heterogeneous catalysis
Journal of Physics A: Mathematical and General, 1990The authors discuss the kinetics of an irreversible monomer-monomer model of heterogeneous catalysis. In this model, two reactive species, A and B, adsorb irreversibly onto single sites of a catalytic substrate; subsequently nearest-neighbour adsorbed AB pairs can bond to form a reaction product which desorbs from the substrate.
D Considine +4 more
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Polycondensation of silylated monomers
Makromolekulare Chemie. Macromolecular Symposia, 1992AbstractVarious polycondensations of silylated aromatic monomers, such as aminophenols, diphenols, hydroxy acids, dicarboxylic acids or acetoxybenzoic acids are reported. Reaction mechanisms and preparative usefulness of their polycondensations are discussed.
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Nature Physical Science, 1973
Techniques of Polymer Syntheses and Characterisation. By D. Braun H. Cherdron W. Kern. Pp. xiv+282. (Wiley: New York and London, June 1972.) £7.25. Ring-Forming Polymerizations. By Robert J. Cotter Markus Matzner. Part B. I. Heterocyclic Rings. Pp. xxi + 422. (Academic: New York and London, July 1972.) $37.95. Cyclic Monomers. Edited by Kurt C. Frisch.
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Techniques of Polymer Syntheses and Characterisation. By D. Braun H. Cherdron W. Kern. Pp. xiv+282. (Wiley: New York and London, June 1972.) £7.25. Ring-Forming Polymerizations. By Robert J. Cotter Markus Matzner. Part B. I. Heterocyclic Rings. Pp. xxi + 422. (Academic: New York and London, July 1972.) $37.95. Cyclic Monomers. Edited by Kurt C. Frisch.
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