METHOD FOR PRODUCING BRANCHED VINYL POLYMER HAVING FUNCTIONAL GROUP

摘要

Disclosed is a method for producing a vinyl polymer (P) having a polar functional group (X), while having a branched structure in the main chain. Specifically disclosed is a method for producing a vinyl polymer (P) having a polar functional group (X), while having a branched structure in the main chain, which is characterized in that while polymerizing and/or after polymerizing a vinyl polymer (I), which has a protecting group (Y) while having a carbon-carbon double bond-containing group (A) at a molecular end, the protecting group (Y) is converted to a polar functional group (X).