| abstract |
PROBLEM TO BE SOLVED: To provide a novel polychloroprene copolymer and a simple production method thereof for improving the adhesiveness of a conventional polychloroprene adhesive or the oil resistance and adhesiveness of a styrene butadiene block copolymer To do. SOLUTION: A polymer (A) having a composition represented by the following general formula (1) is linked to one or both ends of a chloroprene polymer (B), and carbon 13 nuclear magnetic resonance spectroscopy is used. A total amount of 1,2-bond and isomerized 1,2-bond in the obtained chloroprene-based polymer (B) is 2.0 mol% or less, and a chloroprene-based block copolymer, and A method for producing a chloroprene block copolymer. [Chemical 1] [Selection figure] No selection figure |