4 vinylpyridine is prepared by the condensation of 4 methylpyridine and formaldehyde.
Hexyl vinyl pyridine.
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It is a derivative of pyridine with a vinyl group in the 4 position.
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It is a colorless liquid although impure samples are often brown.
If polymerization takes place inside a closed container the container may violently rupture.
2 vinylpyridine is an organic compound with the formula ch 2 chc 5 h 4 n.
The use of dmf trimethylamine and pyridine in 8 1 1 volume composition avoids adsorption of polymer on the sec column.
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A well defined amphiphilic coil rod block copolymer poly 2 vinyl pyridine b poly n hexyl isocyanate p2vp b phic was synthesized with quantitative yields by anionic polymerization a low reactive one directional initiator potassium diphenyl methane dpm k was very effective in polymerizing 2 vinyl pyridine 2vp without side reactions leading to perfect control.
2 vinylpyridine 2vp is a water soluble pyridine derivative that can be used in the synthesis of poly 2 vinylpyridine p2vp by anionic polymerization.
Vinyl pyridine stabilized contains additives to prevent unwanted rapid polymerization.
May nevertheless polymerize exothermically if subjected to heat for prolonged periods or if contaminated.
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It is used industrially as a precursor to specialty polymers and as an intermediate in the chemical pharmaceutical dye and photo industries.
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It can be industrially prepared by treatment of 2 methylpyridine with an aqueous solution of formaldehyde in a temperature range of 150 200 c.
N alkylation reactions of the precursor compounds 4 2 trimethoxysilyl ethyl pyridine 5 and 4 2 trichloro silylethyl pyridine 6 with iodomethane n hexylbromide and n hexadecylbromide cleanly afforded the corresponding i n i alkylpyridinium.
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It is a colorless liquid although samples are often brown.
336 block copolymerization with tbma using living p4vp lithium or potassium proceeds in a controlled manner in thf with pyridine and hmpt containing solvents at 78 and 0 c respectively resulting in p4vp block ptbma.
It is a monomeric precursor to specialty polymers.
2 hexyl pyridine pyridine 2 hexyl supplier sponsors.
A synthetic route to potentially biocidal silsesquioxanes functionalized by quaternary pyridinium functionalities has been developed.
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