COBALT(II) CHELATES AS CHAIN TRANSFER AGENTS IN FREE RADICAL POLYMERICATION AND THE PRODUCTS PRODUCED BY THE PROCESSES

摘要

Cobalt(II) chelates of vicinal iminohydroxyimino compounds, dihydroxyamino compounds, diazadihydroxyaminodialkyldecadienes, diazadihydroxyiminodialkylundecadienes, tetraazatetraalkylcyclotetradecatetraenes, tetraazatetraalkylcyclododecatetraenes, N,N'- bis(salicylidene)ethylenediamines, dialkyldiazadioxodialkyldodecadienes and dialkyldiazadioxodialkyltridecadienes can be used as catalytic chain-transferring agents for controlling the molecular weight of homopolymers and copolymers which are prepared by means of free-radical polymerisations.