NEW BLOCK COPOLYMER, METHOD FOR PRODUCING THE SAME AND USE THEREOF

摘要

PROBLEM TO BE SOLVED: To obtain a new block copolymer usable e.g. as an adhesive material for connecting the circuit of an electric or electronic part such as a semiconductor package, and provide a method for the production of the copolymer. SOLUTION: A block of the block copolymer is composed of a molecular chain (mA; -AAA...AAA-; block A) containing linearly bonded (m) molecular species (A) having non-substituted or substituted methylene groups in the main chain, the other block of the copolymer is composed of a molecular chain (nB; -BBB...BBB-; block B) containing linearly bonded (n) molecular species (B) having cyclic ring structure in the main chain and a residue other than the catalytically active site derived from a metal carbene complex catalyst (C) is bonded to an end of the copolymer molecule. This invention further provides a copolymer containing a catalytically active site derived from the metal carbene complex catalyst (C) and bonded to the other end of the copolymer molecule.