Patent ID: 6914110

Claim:
A process for producing a crosslinkable silyl group-containing polymer comprising the steps of: radically polymerizing a radically polymerizable vinyl monomer in the presence of at least one thiocarbonylthio group-containing compound selected from the group consisting of a compound represented by general formula (1): (wherein R 1 is a p-valent organic group of 1 or more carbon atoms which may contain one of nitrogen, oxygen, sulfur, halogen, silicon, phosphorus, and metal atoms, or which may be a polymer; Z 1 is a hydrogen atom, halogen atom, or monovalent organic group of 1 or more carbon atoms which may contain one of nitrogen, oxygen, sulfur, halogen, silicon, and phosphorus atoms, or which may be a polymer; when plural Z 1 s are present, the plural Z 1 s may be the same or different; and p is an integer of 1 or more), and a compound represented by general formula (2): (wherein R 2 is a monovalent organic group of 1 or more carbon atoms which may contain one of nitrogen, oxygen, sulfur, halogen, silicon, phosphorus, and metal atoms, or which may be a polymer; Z 2 is an oxygen atom (when q=2), sulfur atom (when q=2), nitrogen atom (when q=3), or q-valent organic group of 1 or more carbon atoms which may contain one of nitrogen, oxygen, sulfur, halogen, silicon, and phosphorus atoms, or which may be a polymer; plural R 2 s may be the same or different; and q is an integer of 2 or more), to prepare a thiocarbonylthio group-containing polymer; converting the thiocarbonylthio group of the polymer into a mercapto group; and coupling the polymer with a compound having a crosslinkable silyl group and an isocyanato group in each molecule via the mercapto group.