Process for the preparation of an ethylene copolymer in a...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

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C526S064000, C526S087000

Reexamination Certificate

active

07820776

ABSTRACT:
The invention relates to a process for the preparation of a copolymer of ethylene and a monomer copolymerizable therewith.The polymerization takes place in a tubular reactor at a peak temperature between 290° C. and 350° C., the co monomer is a di- or higher functional (meth)acrylate and the co monomer is applied in an amount between 0.008 mol % and 0.200 mol % relative to the amount of ethylene copolymer.

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Auger & Nguyen, Using Polymer Characterization Techniques to Predict LDPE Resin Suitability for Extruded Foam App. Journal of Cellular Plastics, vol. 37, Nov. 2001, p. 485-490.
Oveby, Claes, Rheological Indicators of LDPE to Predict Processing Performance in Extrusion Coating, Annual Transactions of Nordic Rheological Society, vol. 13, 2005, p. 187-190.
M. Neilen, Statistical models to describe correlations between molecular mass distribution and extrusion coating processability of autoclave idPE, TAPPI 9th European Conf 2003.
T. Bezigian, The Extrusion Coating Processability of Autoclave idPE and p. 303 of “The extrusion Coating Manual” edited by T. Bezigian, Copyright 1999.

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