[12] Patent
[11] Patent No.:GC0009353  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2018                56/2018  
Number of the Decision to Grant the Patent:2018/141492
Date of the Decision to Grant the Patent:12/Dec/2018

[21] Application No.:GC 2013-24342

[22] Filing Date:8/5/2013

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
9/5/2012
61/644,744

[72] Inventors:1- Overett, Matthew James،2- Evans, Stephen John،3- Blann, Kevin،4- Grobler, Elzet

[73] Owner: Sasol Technology (Pty) Limited , 1 Sturdee Avenue, Rosebank, 2196, Johannesburg, South Africa

[74] Agent: Clyde & Co LLP

  

 

  

[51]IPC:
Int. Cl.: C07C 11/107, 11/21, 2/36 (2006.01)

[56] Cited Documents:

-WO 2011/140629 A1 (NOVA CHEM INT SA [CH];CARTER CHARLES ASHTON GARRET [CA];CHISHOLM P S) 17 November 2011
-WO 2011/130822 A1 (NOVA CHEM INT SA [CH];JABER ISAM [CA]; CARTER CHARLES ASHTONGARRET [) 27 October 2011
 
Examiner: Eng. Abdulaziz S. AlMotek

[54] TETRAMERISATION OF ETHYLENE
[57] Abstract: A process for the tetramerisation of ethylene under solution phase conditions is carried out in the presence of an activated catalyst at a temperature above 80°C and up to a temperature of about 115°C. The activated catalyst is provided by combining a source of chromium, a diphosphine ligating compound and optionally a catalyst activator or combination of catalyst activators. The process forms at least 30% 1-octene and a polyethylene co-product that, together with any other reaction products, remains substantially dissolved in the liquid phase. The polyethylene co-product has a weight average molecular weight (Mw) of less than 200 000 g/mol, a number average molecular weight (Mn) of less than 3 000 g/mol, and a melt flow index of more than 20 g/10 minutes.
No. of claims: 18


 

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