Process for producing vinyl polymer having functional group at end and vinyl polymer having functional group at end

A functional group-terminated vinyl polymer obtained by a production method comprising:

• synthesizing a halogen atom-terminated vinyl polymer by the radical polymerization reaction of a vinyl monomer in the presence of a halogen compound and
• introducing a functional group to a terminus by substituting a functional group-containing group for the terminal halogen atom of said vinyl polymer,
• said halogen compound having a structure such that said halogen atom is bound to a carbon atom linked to an aromatic ring and
• said radical polymerization reaction being carried out either by light irradiation or light irradiation in the presence of a tin compound or a bismuth compound or by heating in the presence of a tin compound or a bismuth compound.

A functional group-terminated vinyl polymer obtained by a production method comprising:

• synthesizing a halogen atom-terminated vinyl polymer by the radical polymerization reaction of a vinyl monomer in the presence of a halogen compound and
• introducing a functional group to a terminus by substituting a functional group-containing group for the terminal halogen atom of said vinyl polymer,
• said halogen compound having a structure such that said halogen atom is bound to a carbon atom linked to an aromatic ring and
• said radical polymerization reaction being carried out either by light irradiation or light irradiation in the presence of a Group 14 to 16 metal compound or by heating in the presence of a Group 14 to 16 metal compound.