Method for improving reactor stability for the preparation of ethylene-based polymers using asymmetric polyenes

摘要

The present invention provides a method for forming an ethylene-based polymer, said method comprising at least one asymmetric polyene comprising ethylene and an “alpha, beta unsaturated carbonyl terminus” and a “C—C double bond terminus”; The polymerization takes place in the presence of at least one free radical initiator, the polymerization comprising a reaction comprising at least two reaction parts, reaction part 1 and reaction part i (i ≧ 2) Occurs in the reactor configuration, reaction section i is downstream of reaction section 1, at least one chain transfer agent (CTA) is added to the polymerization, and CTA is a saturated or unsaturated hydrocarbon. [Selection figure] None