[12] Patent
[11] Patent No.:GC0009435  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/141998
Date of the Decision to Grant the Patent:20/Dec/2018

[21] Application No.:GC 2016-30877

[22] Filing Date:15/2/2016

[30] Priority:

[33] State [32] Priority date [31] Priority No.
EP
23/2/2015
15156146.1

[72] Inventors:1- Sven Wolfram،2- Andre-Armand Finette،3- Udo Backes،4- Andrei Gonioukh،5- Hicran Cabuk

[73] Owner: Basell Polyolefine GmbH, Bruehler Strasse 60, D-50389, Wesseling, Germany

[74] Agent: Abu-Gazaleh Intellectual Property L.L.C

  

 

  

[51]IPC:
Int. Cl.: C08F 2/01 (2006.01)

[56] Cited Documents:

-WO 2010081684 A1 (BASELL POLYOLEFINE GMBH [DE]; LITTMANN DIETER [DE]; FINETTE ANDRE-ARMA) 22 July 2010
-US 2002132936 A1 (KENDRICK JAMES AUSTIN [US] ET AL) 19 September 2002
 
Examiner: Sarah Fahad Al-Dossary

[54] HIGH-PRESSURE POLYMERIZATION PROCESS OF ETHYLENICALLY UNSATURATED MONOMERS
[57] Abstract: A process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out at temperatures from 100°C to 350°C and pressures in the range of from 110 MPa to 500 MPa in a continuously operated polymerization reactor which is controlled by a pressure control valve at the outlet of the polymerization reactor, the process comprising continuously monitoring the pressure within the polymerization reactor, feeding a pressure signal to a controller for controlling the control valve and having the controller altering the opening of the pressure control valve to control the pressure within the polymerization reactor, wherein the controller starts an emergency shutdown program when the pressure control valve closes more than a preset threshold value and the pressure within the polymerization reactor decreases below a preset pressure threshold.
No. of claims: 10     No. of figures: 1


 

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