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Polymeric Foams
Published in Kathleen Hess-Kosa, Building Materials, 2017
In a 2010 Fin Pan Pro Panel Foam Backer Board MSDS, the Chinese manufacturer claims flame retardant additives as “proprietary,” while there is a slight hydrocarbon odor. It is not clear as to the component source of the odor. “Hazardous decomposition products” are more extensive than that of unfoamed PE plastic.Does not normally decompose. Evolution of small amounts of hydrogen halides occurs when heated above 250°C. Under high heat, non-flaming conditions, small amounts of aromatic decomposition products depend upon temperature, air supply and the presence of other materials. Hazardous decomposition products may include and are not limited to ethyl benzene, aromatic compounds, aldehydes, hydrogen bromide, hydrogen chloride, hydrogen fluoride, polymer fragments, and styrene.
Introduction
Published in J. R. Coaton, A. M. Marsden, Lamps and Lighting, 2012
Other examples of the chemical function of gases and vapours are to be found in tungsten halogen lamps. Reactive gases, such as hydrogen bromide (HBr), tribromomethane (CHBr3), dibromomethane (CH2Br2), and bromomethane (CH3Br), are introduced, in addition to the inert gas filling, to support tungsten transport cycles (chapter 9), and metal halides are used in discharge lamps (chapter 15).
Chemical Reactions of Glycerine
Published in Eric Jungermann, Norman O.V. Sonntag, Glycerine, 2018
Mono- and dibromohydrins have been prepared by the reaction between glycerine and hydrobromic acid or dry hydrogen bromide. They are colorless, viscous liquids, and occur in the various isomeric forms. Iodohydrins have not been made directly from glycerine; instead, they have been prepared from chlorhydrins by replacing the chloride with iodine [24].
The impacts of feed fraction on copolymer microstructure in ATRcP: a kinetic Monte Carlo simulation
Published in International Journal of Modelling and Simulation, 2019
Sahand Serajian, Mohammad Najafi, Anahita Amiri
where, MA, MB, PA,n, PB,n, Pn+m, RX, PA,nX, PB,nX, HX, R*, and R’* represent styrene, n-butyl acrylate, dead polymer chains with styrene as the last monomer unit and a length of n, dead polymer chains with n-butyl acrylate as the last monomer unit and a length of n, dead chains with a length of n + m, initiator, catalyst (activator) at a lower oxidation state, catalyst (activator) at a higher oxidation state, deactivated chains with styrene as the last monomer unit and a length of n, deactivated chains with n-butyl acrylate as the last monomer unit and a length of n, hydrogen bromide byproduct, main primary radicals, and side primary radical respectively. Moreover, and stand for styrene monomer radicals, n-butyl acrylate monomer radicals, styrene chain radicals, and n-butyl acrylate chain radicals, terminated primary radicals with an unsaturated end, terminated dead chains with styrene as the last monomer unit having an unsaturated end and a length of n, terminated dead chains with n-butyl acrylate as the last monomer unit having an unsaturated end and a length of n correspondingly. Table 1 tabulates the value and definition of the kinetic parameters employed in the current work.