Sasol Technology (pty) Limited

Sasol Chemical Industries Limited

Sasol Technology Limited

Esna Killian

Kevin Blann

John Thomas Dixon

Matthew James Overett

David Hedley Morgan

Annette Bollmann

Hulisani Maumela

Fiona Millicent Hess

Stefanus Otto

Arno Neveling

Richard Neil Walsh

Michael James Green

Deon De Wet-Roos

Lana Pepler

Hamdani Ahmed Mahomed

Dawid Johannes Joubert

Nonhlanhla Jillian Phelembe

Aletta Du Toit

Hulisani 31 San Raphael Maumela

According to the present invention there is provided a process for producing an oligomeric product by the oligomerisation of at least one olefinic compound including: A) providing an activated oligomerisation catalyst comprising the combination of: i) a source of a transition metal; ii) a ligating compound of the formula (R)X(Y)X(R)iii) a metal containing activator; and (iv) at least one olefinic compound; B) diluting the activated oligomerisation catalyst of A with an introduced liquid medium; and C) contacting the at least one olefinic compound to be oligomerised with the diluted activated catalyst of B to produce an oligomeric product.

Oligomerisation of olefinic compounds in the presence of a diluted metal containing activator

This invention relates to a process for producing an oligomeric product by the oligomerization of at least one olefinic compound by contacting the at least one olefinic compound with an oligomerization catalyst in an aliphatic liquid medium at a reaction temperature of at least 50&#xb0; C. The catalyst comprises the combination of a source of a transition metal; and a ligating compound of the formula (R)X(Y) X(R).

Oligomerisation of olefinic compounds in an aliphatic medium

The invention describes a process for trimerisation olefins, which process includes the step of contacting an olefinic feedstream with a catalyst system which includes a transition metal compound and a heteroatomic ligand and wherein the trimer is an olefin and wherein the heteroatomic ligand is described by the following general formula (R)A-B-C(R).

Trimerisation of olefins

The invention describes a process for tetramerisation of olefins wherein the product stream of the process contains more than 30% of the tetramer olefin. The process includes the step of contacting an olefinic feedstream with a catalyst system containing a transition metal compound and a heteroatomic ligand.

Tetramerization of olefins

This invention relates to a process for producing a polymeric product by the polymerisation of at least one olefinic compound in the form of an olefin or a compound including an olefinic moiety by contacting the at least one olefinic compound with a polymerisation catalyst. The catalyst comprises the combination of a source of a Group IV to VI transition metal; and a ligating compound of the formula(R)X(Y)X(R).The process is characterised therein that when Rand Rare independently a hydrocarbyl group or a heterohydrocarbyl group which contains at least one non-polar substituent, the olefinic compound is contacted with the polymerisation catalyst at a reaction temperature from and above 70&#xb0; C.; and where Rand Rare independently a hydrocarbyl group or a heterohydrocarbyl group which contains no substituent, the olefinic compound is contacted with the polymerisation catalyst at a reaction temperature from and above 90&#xb0; C.

Polymerisation of olefinic compounds

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Sasolburg, South Africa

Esna Killian