Basell Polyolefine Gmbh

Sebastian Weiand

Dieter Lilge

Iakovos Vittorias

Gerd Mannebach

Andre-Armand Finette

Andrei Gonioukh

Stephan Schmitz

Barbara Gall

Thomas Herrmann

Klaus Berhalter

Christian-Ulrich Schmidt

Wolfgang Gsella

Guido Bürger

Guido Küpper

Victor Kuhne

Tom Zimmermann

Markus Busch

The present disclosure provides a low density polyethylene (LDPE) having (A) a density from 0.910 to 0.924 g/cm, determined according to ISO 1183 at 23&#xb0; C.; (B) an elongational hardening of at least 4.2, at 150&#xb0; C. at an elongational rate of 1 s; (C) a ratio Mw/Mn of at least 18, where (i) Mw is the weight average molar mass, measured by a MALLS detector coupled to a GPC, and (ii) Mn is the number average molar mass, measured by GPC (Gel Permeation Chromatography); and (D) a Mw of at least 230,000 g/mol. The present disclosure also provides an article of manufacture made from or containing (A) a substrate and (B) a coating layer made from or containing the disclosed LDPE. The present disclosure further provides a polymerization process occurring (A) in the presence of oxygen as the only radical initiating agent and (B) in the absence of solvents.

Low density polyethylene with high elongation hardening

A process for monitoring the polymerization of ethylene or ethylene and comonomers 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 with one or more reaction zones, which is equipped with cooling jackets for cooling the tubular reactor with a cooling medium, comprising a step of measuring as process parameters the temperature profile and the pressure of the reaction medium and the flow and temperature profile of the cooling medium along the reactor.

Process for monitoring the polymerization of ethylene or ethylene and comonomers in a tubular-reactor at high-pressures

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Kö'ln, Germany

Sebastian Weiand