Patent ID: 6586540
Filing Date: 2003-07-01
Classification: C08F

Abstract:
A method for producing a copolymer based on ethylene having a density of greater than or equal to 0.936 g/cm3 by continuous copolymerization of ethylene and comonomer in a reactor at temperatures of greater than or equal to 94.2Â° C. in the presence of a catalyst, where, in a first step of the copolymerization, a mixture comprising ethylene and comonomer of such a composition that a copolymer-containing coating deposits in the reactor is metered into the reactor and/or generated in the reactor, and, in a second step, the concentration of the comonomer in the metered-in mixture and/or in the mixture generated in the reactor is reduced and/or the concentration of the ethylene in the metered-in mixture and/or in the mixture generated in the reactor is increased, with the coating being removed from the reactor either partially or completely, even from narrowed regions of the reactor and a discharge system.