Pmc Organometallix, Inc.

Atofina Vlissingen B.v.

Arkema France

Total Petrochemicals France

Arkema B.v.

Arkema Vlissingen

Berth Jan Deelman

Gerard Van Koten

Isabelle Tartarin

Jean-Luc Couturier

William D Honnick

Andrew Richard Goddard

Anne Chabrol

Hendrik Hagen

Bodo Richter

Aloysius Cornelius A De Wolf

Sander Thoonen

Virginie Cheron

Evert J Saman

Jeroen J M De Pater

Maarten D K Boele

Michelle F Walasavage

George J Merz, Iii

Andrew R Goddard

Jeroen De Pater

Jeroen JM De Pater

George J Iii Merz

Erika Wagner

Boele Maarteen

The present invention relates to the thermal stabilization of halogen containing polymer compositions. More particularly the invention relates to a tin stabilizer composition for chlorine containing polymers, and more specifically a composition comprising a mono alkyltin compound as major compound of the tin stabilizer composition and a co-stabilizer. The present invention relates as well to the use of a mono alkyl tin compound as major compound of the tin stabilizer and a co-stabilizer as heat stabilizers for processing chlorine containing polymer composition.

Halogen containing polymer composition with tin stabilizer and co-stabilizer

The invention provides a process for producing monoalkyltin trihalide or a mixture of monoalkyltin trihalide and dialkyltin dihalide by: (a) contacting dialkyltin dihalide with an alkylation agent and, optionally, tin tetrahalide, to form a tetraalkyltin mixture comprising tetraalkyltin, trialkyltin halide, and dialkyltin dihalide; (b) reacting the tetraalkyltin mixture with tin tetrahalide to form a monoalkyltin trihalide mixture comprising monoalkyltin trihalide, dialkyltin dihalide and optionally triaklyltin halide; (c) processing the monoalkyltin trihalide mixture to separately recover the monoalkyltin trihalide and a dialkyltin dihalide stream optionally containing trialkyltin halide; and (d) recycling at least a portion of the dialkyltin dihalide stream recovered in step (c) to the contacting step (a).

Process for preparing monoalkyltin trihalides and dialkyltin dihalides

The present invention relates to high purity monoalkyltin compounds, more specifically to alkyltin compound compositions containing monoalkyltin as major compound, and minor quantities of di- and/or trialkyltin compounds. The present invention also relates to the preparation processes of such high purity monoalkyltin compounds, as well as to the uses of said monoalkyltin compounds as chlorine-containing polymer-stabilizers, glass coating chemicals and catalysts, as well as articles comprising at least one polymer matrix and a high purity monoalkyltin compound.

High purity monoalkyltin compounds and uses thereof

The invention concerns ligands with at least a fluorosilicone substituent of general formulae (I) and (II); a method for preparing them and their use for producing catalysts useful for olefin polymerisation

Ligands with at least a fluorosilcone substituent useful for preparing metal-locenes

The present invention is directed to a process for the production of monoalkylin trihalides of the formula RSnX wherein R-alkyl or cycloalkyl and X&mdash;Cl, Br or I involving a redistribution reaction between tetraorganotins, triorganotin halides or diorganotin halides and tin tetrahalides, said process comprising contacting tetra-(R Sn), tri-(R SnX) or diorganotin halides (R SnX ) with SnX to afford said monoorganotin trihalides in the presence of at least one transition metal complex, said complex comprising at least one transition metal M, selected from Group VIII of the periodic Table of elements, at least one monodentate ligand or bidentate ligand, L, L&prime;, or L&Prime;, and optionally one or more anions, X, of an organic or inorganic acid, as a catalyst or catalyst precursor.

Process for the production of monoalkyltin trihalides

A fluorous phosphine wherein the phosphor is coupled to at least one aryl or alkyl moiety, to which moiety a fluorous tail is coupled, wherein a spacer group, containing a non-carbon atom, is positioned between the aryl or alkyl moiety and the fluorous tail, a process for the preparation of said phosphines, metalcomplexes, catalysts and catalyst compounds therefrom and their use in catalysis.

Fluorous phosphines and process for their preparation

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Kapelle, Netherlands

Berth Jan Deelman