Loading patent…
AssigneeMitsubishi Chemical Corporation
InventorsHideto Hayashi, Koichi Hayashi
Estimating the term…
The present invention relates to a process for producing a pyridylethylthio compound which is improved in yield of the pyridylethylthio compound. In a process for producing a pyridylethylthio compound by reacting vinyl pyridine with a sulfur-containing compound, vinyl pyridine used contains a compound represented by the general formula (1): (wherein R1 and R2 are any of combination of isopropenyl group and a hydrogen atom, combination of 1-propenyl group and a hydrogen atom, combination of 2-propenyl group and a hydrogen atom, and combination of methyl group and vinyl group), in an amount of not more than 4% by weight.
A process for producing a pyridylethylthio compound by reacting vinyl pyridine with a sulfur-containing compound, wherein said vinyl pyridine contains a compound represented by the general formula (1):
A process for producing a modified ion exchanger composed of an acid ion exchanger of which acid group is at least partially protected with a pyridylethylthio compound by reacting the acid ion exchanger with a modifier composed of a mercaptoalkylpyridine compound or a derivative thereof having a protected mercapto group, wherein the modifier dispersed in a dispersion medium is contacted with the acid ion exchanger to modify at least a part of the acid group of the acid ion exchanger.
Dependencies are inferred from the claim text.