Process for the preparation of polyether oligomer containing...

Details Process for the preparation of polyether oligomer containing... Process for the preparation of polyether oligomer containing...

C - Chemistry, Metallurgy

08

G

C08G 65/32 (2006.01) C08G 65/336 (2006.01)

Patent

CA 2309961

A process for the preparation of a polyether oligomer containing a reactive silicon group, characterized by reacting a polyether oligomer (a) which comprises a polyether backbone chain and has at least one unsaturated group represented by the general formula: (1) H2C=C(R1)-R2-O- or (2) HC(R1)=CH-R2-O- on the side chain of the molecule or at the end thereof. In said formulas, R1 is a hydrocarbon group having at most 10 carbon atoms; and R2 is a C1-C20 divalent organic group containing as the constituent atom at least one member selected from the group consisting of hydrogen, oxygen and nitrogen; with a compound (b) containing a reactive silicon group in the presence of a Group VIII transition metal catalyst; (c) to incorporate the reactive silicon group into the polyether oligomer (a).

La présente invention concerne un procédé de préparation d'un oligomère de polyéther contenant un groupe réactif silicone, caractérisé en ce que l'on met à réagir un oligomère de polyéther (a) comprenant un squelette polyéther et renfermant au moins un groupe insaturé de la formule générale (1) H¿2?C=C(R?1¿)-R?2¿-O- ou (2) HC(R?1¿)=CH-R?2¿-O- sur la chaîne latérale de la molécule ou à l'extrémité de cette dernière: (dans laquelle R?1¿ est un groupe hydrocarbure renfermant 10 atomes de carbone maximum; et R?2¿ est un groupe organique bivalent C¿1?-C¿20? renfermant comme atome constituant au moins un élément choisi dans le groupe composé de l'hydrogène, de l'oxygène et de l'azote) avec un composé (b) renfermant un groupe réactif silicone en présence d'un catalyseur métal de transition du groupe VIII (c) afin d'incorporer le groupe réactif silicone dans l'oligomère de polyéther (a).

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