Patent ID: 6521720
Filing Date: 2003-02-18
Classification: C08F

Abstract:
A continuous process for producing elastomers based on conjugated dienes or based on conjugated dienes and vinyl aromatic compounds or based on alkenes, comprising the steps of carrying out polymerization in the presence of an inert solvent and in the presence of polymerization catalysts in at least two reactors connected in series, wherein the residence time of the monomers used and the elastomers formed in the first reactor being adjusted such that the residence time of the monomers used and the elastomers formed in the first reactor to the residence time of the monomers used and the elastomers formed in the remaining reactors being in the range of 1:1 to 4:1, the temperature gradient in the first reactor being &lE;25Â° C. and the temperature in the individual reactors during polymerization being in the range of 0 to 140Â° C.