Shell Oil Comapny

Sri International

Jan De With

Roelof Van Ginkel

Alexander Van Der Made

Wolf Eilenberg

Rui Zhang

Chunming Xu

Zhichang Liu

Feike De Jong

Xianghai Meng

Peter Anton August Klusener

Andrew David Horton

Ursula Eilenberg-Robben, Legal Representative

The present invention relates to a process for preparing alkylate comprising the subsequent steps (a), (b) and (c):

Process for preparing alkylate comprising an improved solids removal step

A process for the separation of olefinic hydrocarbons from a liquid feedstock composition comprising at least one olefinic hydrocarbon and at least one paraffinic hydrocarbon, said process comprising contacting the liquid feedstock with a supported ionic liquid membrane wherein the supported ionic liquid membrane comprises a membrane impregnated with an ionic liquid composition.

Process for the separation of olefins and paraffins

This invention relates to processes for making phosphorus compounds RP&#x2014;X&#x2014;PR, RP-M, RP-L and RP, and the novel cation RP(L)-X&#x2014;P(L)R, where R represents an optionally substituted hydrocarbyl group, X represents a bridging group, L represents a leaving group and M represents an alkali metal atom. The invention relates further to a process for making a compound RP-L from a compound R&#x2014;H via a new process for making the compound R&#x2014;Li followed by its reaction with a compound HalP-L. The compound RP&#x2014;X&#x2014;PRis a ligand suitable for making catalysts for copolymerizing carbon monoxide and a olefinically unsaturated compound.

Preparation of phosphorus-containing compounds useful in the preparation of biphosphine ligands

This invention relates to processes for making phosphorus compounds R P&mdash;X&mdash;PR , R P-M, R P-L and R P, and the novel cation R P (L)-X&mdash;P (L)R , where R represents an optionally substituted hydrocarbyl group, X represents a bridging group, L represents a leaving group and M represents an alkali metal atom. The invention relates further to a process for making a compound R P-L from a compound R&mdash;H via a new process for making the compound R&mdash;Li followed by its reaction with a compound Hal P-L. The compound R P&mdash;X&mdash;PR is a ligand suitable for making catalysts for copolymerizing carbon monoxide and a olefinically unsaturated compound.

This invention relates to processes for making phosphorus compounds R P&mdash;X&mdash;PR , R P&mdash;M, R P&mdash;L and R P, and the novel cation R P (L)&mdash;X&mdash;P (L)R , where R represents an optionally substituted hydrocarbyl group, X represents a bridging group, L represents a leaving group and M represents an alkali metal atom. The invention relates further to a process for making a compound R P&mdash;L from a compound R&mdash;H via a new process for making the compound R&mdash;Li followed by its reaction with a compound Hal P&mdash;L. The compound R P&mdash;X&mdash;PR is a ligand suitable for making catalysts for copolymerizing carbon monoxide and a olefinically unsaturated compound.

Preparation of biphosphine ligands for incorporation into catalytic complexes

A catalyst composition comprising a bis-amide compound represented by the formula ##STR1## wherein M is zirconium, hafnium or titanium; each N is a three coordinate nitrogen atom; each e is Si, Ge or Sn; each Z is, independently, a hydride or R; each R is, independently, a hydrocarbyl one or more carbon atoms of which may be substituted by an element selected from Si, O, P, N and S; L is a neutral Lewis base and m is a number from 0 to 2; or a dimer thereof and a second component. Preferably the second component is a compound which is capable of providing a bulky and labile anion �A!.sup.-, which anion is substantially non-coordinating under the reaction conditions and contains at least one boron atom. Also provided is a process for oligomerizing or co-oligomerizing alpha olefins in the presence of this catalyst composition.

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Amsterdam, Netherlands

Jan De With