Sabic Global Technologies B.v.

Basell Polyolefine Gmbh

Technische Universitat

Markus Busch

Peter Neuteboom

Diego Mauricio Castaneda Zuniga

Jan Nicolaas Eddy Duchateau

Sebastian Bruno Fries

Dieter Lilge

Dieter Littmann

Iakovos Vittorias

Gerd Mannebach

Barbara Gall

Thomas Herrmann

The invention relates to a process for preparing a graft copolymer comprising polyethylene, comprising the steps of: A) providing an ethylene copolymer comprising side chains having C&#x2261;C bond and B) reacting the ethylene copolymer of step A) with an azide at an elevated temperature in the absence of a catalyst to obtain the graft copolymer, wherein the azide compound is an azide compound having a functional group or a polymer having an azide group.

Process for preparing graft copolymer comprising polyethylene

The invention relates to a process for preparing a graft copolymer comprising polyethylene, comprising the steps of: A) providing an ethylene copolymer comprising side chains having C&#x2261;C bond and B) reacting the ethylene copolymer of step A) with an azide compound in the presence of a catalyst, a free radical initiator or diphenylamine to obtain the graft copolymer, wherein the azide compound is an azide compound having a functional group or a polymer having an azide group.

A process for preparing an ethylene copolymer in the presence of free-radical polymerization initiator at pressures from 150 MPa to 350 MPa and temperatures from 100&#xb0; C. to 350&#xb0; C., by copolymerizing ethylene and a comonomer having a C&#x2261;C bond and optionally further comonomers, wherein the comonomer having the C&#x2261;C bond is represented by formula wherein wherein Xis F, Cl, Br or I.

Method for preparing ethylene copolymer

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&#xb0; C. to 350&#xb0; C. in a tubular reactor by copolymerizing ethylene, a bi- or multifunctional comonomer and optionally further comonomers, wherein the bi- or multifunctional comonomer bears at least two different functional groups, of which at least one is a unsaturated group, which can be incorporated into the growing polymer chain, and at least another functional group can act as chain transfer agent in radical ethylene polymerization, ethylene copolymers obtainable by such a process, the use of the ethylene copolymers for extrusion coating and a process for extrusion coating a substrate selected from the group consisting of paper, paperboard, polymeric film, and metal, with such ethylene copolymers.

Process for the preparation of ethylene copolymers in the presence of free-radical polymerization initiator by copolymerizing ethylene, a bi- or multifunctional comonomer and optionally further comonomers

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Geleen, Netherlands

Markus Busch