Functionalization has become an important way to obtain high performance polymer materials. Polymer functionalization has been developed from chain-end functionalization to in-chain functionalization. By living anionic polymerization the methodology of precise synthesis of dendrigraft polymers was studied. In-chain functionalized polymers with functional groups of definite function

accurate quantity and precise position were synthesized by the living anionic copolymerization of general monomers such as butadiene/isoprene/styrene and 1

1-diphenylethylene (DPE) derivatives with functional groups such as DPE-OSi and DPE-SiH. Then many kinds of functional groups were able to get by the transition reaction from DPE-OSi and DPE-SiH to other functional groups. The precise synthesis methodology of in-chain functionalized polymers with the complex topology structure was studied and the relationship between the structure and property of above polymers was understood.