To overcome a problem that separability of a polymer solution and a water phase is bad, an emulsified intermediate layer is generated, and a polymer yield is reduced when cleaning isobutylene polymer solution with water containing a base and a reductant for removing hydrogen bromide (HBr) and ...
Reactive Ionomers: N-vinylimidazolium Bromide Derivatives of Poly(isobutylene-co-isoprene) and Poly(isobutylene-co-para-methylstyrene) ii Acknowledgements ... iii Table of A Ozvald 被引量: 0发表: 2012年 Dispersion of Layered Organosilicates in Isobutylene-Based Elastomers (Paper No. 67) Dispersion...
Interaction of m- and p-fluorophenylmagnesium bromide with perfluoroisobutylene or with methyl perfluoromethacrylate gives the corresponding arylperfluoroisobutylenes and methyl α -trifluoromethyl- β -fluoro- β -arylacrylates. Examination of the 19 F NMR spectra of substituted m- and p-fluorobenzene...
The thermal degradation kinetics of pairs of vinyl chloride copolymers with diethyl fumarate, isobutylene and vinyl bromide, having the same composition but different tacticity, were followed by conductivity measurements. From the results for degradation up to 0路3% and up to 10%, it follows that ...
The click reaction of azido-functionalized IIR with acetylenic acids, which was carried out using the copper(I) bromide/N,N,N′,N″,N″-pentamethyldiethylenetriamine catalyst system in tetrahydrofuran, yielded carboxylated IIRs. The products were characterized byH NMR and FT-IR spectroscopy, and ...
This invention relates to the production of the normally solid adduct of isobutylene and nitrosyl chloride or bromide. Certain methods for preparing the solid adduct of isobutylene and nitrosyl chloride or bromide are known. For example, it is known to prepare the nitrosyl chloride adduct... Appl...
Preferred nucleophiles are halides, more preferably chloride, bromide, and iodide; cyanide, alcohols, alkoxides, fluoroalkoxides, perfluoroalkoxides, aryloxide, fluoroaryloxides, and perfluoroaryloxides. Further preferred nucleophiles are substituted alcohols such as ethylene cyanohydrin (HOCH2CH2CN), ...
Copolymers of vinyl chloride (> 90%) with diethyl fumarate, isobutylene and vinyl bromide, prepared at temperatures between +25 and −30°, were used to determine the influence of the copolymerization on the tacticity of polyvinyl chloride sequences in the copolymers. The tacticity appeared to ...
The method requires the use of a suitable ATRP initiator, such as 1-phenylethyl bromide, and suitable transition metal salts, such as CuBr, with a ligand, such as 2,2′-bipyridyl, to perform the complex redox initiation and propagation steps of the polymerization process. ...
In addition, the polyisobutenylboranes obtained can be subjected to a reaction with bromine in the presence of hydroxide ions to obtain the bromide. The isobutene polymer used has at least one terminal olefinic unsaturation. The olefinically unsaturated group may be, for example, aliphatic ...