METHOD FOR RING-OPENING OR POLYCONDENSATION POLYMERIZATION

The invention relates to a method for producing linear organopoly siloxanes OL by means of a polymerization reaction from organopoly siloxanes O (cyclic and/or linear), and using a catalytic system AI. More precisely, the method of the present invention makes it possible to obtain linear organopoly...

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Bibliographische Detailangaben
Hauptverfasser:	BLANC, Delphine, BOULEGUE-MONDIERE, Aurélie, KATO, Tsuyoshi, SHI, Limiao, PARISOT, Hervé, BACEIREDO, Antoine
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON HETEROCYCLIC COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	The invention relates to a method for producing linear organopoly siloxanes OL by means of a polymerization reaction from organopoly siloxanes O (cyclic and/or linear), and using a catalytic system AI. More precisely, the method of the present invention makes it possible to obtain linear organopoly siloxanes OL having a controlled molar mass with a very low residual rate of residual cyclic organopoly siloxanes. The present application also relates to the linear organopoly siloxane OL obtained according to the various embodiments of the method of the present invention described above. L'invention concerne un procédé de préparation d'organopoly siloxanes linéaires OL par une réaction de polymérisation à partir d'organopoly siloxanes O (cycliques et/ou linéaires), et à l'aide d'un système catalytique AI. Plus précisément le procédé de la présente invention permet d'obtenir des organopoly siloxanes linéaires OL de masse molaire contrôlée avec un taux résiduel d'organopoly siloxanes cycliques résiduels très faible. La présente demande concerne également l' organopoly siloxane linéaire OL obtenu selon les différents modes de réalisation du procédé de la présente invention décrits ci-avant.