Borealis Technology Oy

Kjetil Larsen Borve

Keith Redford

Ole Jan Myhre

Merete Skar

Hans Georg Daviknes

Geir Morten Johansen

Aage Stori

A shrink film comprising a polyethylene film of thickness 5 to 500 &#x3bc;m, wherein the polyethylene comprises an ethylene homopolymer-copolymer mixture having a molecular weight distribution in the range of 5 to 40, and a weight average molecular weight of at least 100 kD.

Shrink film

The present invention refers to a process for preparing cross-linked polyolefins, comprising the steps of adding a diazido compound of the formula (I) N&#x2550;N&#x2550;N&#x2014;X&#x2014;R&#x2014;X&#x2014;N&#x2550;N=N wherein R represents an aryl, alkyl or aralkyl group having 3 to 20 carbon atoms and X stands for &#x2014;CO&#x2014;, &#x2014;O&#x2014;CO&#x2014; &#x2014;SO&#x2014;, &#x2014;PO&#x2014;, &#x2014;PO&#x2014;, or &#x2014;Si (&#x2550;O)&#x2014;, and a peroxide compound of the general formula (II) R&#x2014;X&#x2014;OO&#x2014;X&#x2014;Rwherein Rand Rare the same or different and represent hydrogen, an aryl, alkyl or aralkyl group having 3 to 20 carbon atoms and optionally comprising further peroxide groups, wherein one of Rand Rcan form a ring, and Xand Xare the same or different and stand for a direct bond, &#x2014;CO&#x2014; or &#x2014;CO&#x2014; to a polyolefin in powder or pellet form; mixing the product to obtain a mixture; extruding the mixture in an extruder at a temperature above the decomposition temperature of the diazido compound of formula (I) and of the peroxide compound of formula (II).

Process for preparing cross-linked polyolefins

Growing community of inventors

Stathelle, Norway

Kjetil Larsen Borve