Patent ID: 9238700
Filing Date: 2016-01-19
CPC Classification: C08F

Claim Text:
1. A process for preparing ethylene copolymers in the presence of free-radical polymerization initiator at pressures in the range of from 160 MPa to 350 MPa and temperatures in the range of from 100° C. to 350° C. in a tubular reactor by copolymerizing ethylene, a bi- or multifunctional comonomer and optionally further comonomers, wherein the bi- or multifunctional comonomer has a structure represented by general formula (I): wherein R X R n is from 1 to 32, X R or the unit X wherein the bi- or multi-functional comonomer bears at least two different functional groups, of which at least one is an unsaturated group and at least another functional group can act as chain transfer agent in radical ethylene polymerization.