Importance

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Abstract

The object of the present invention is to provide a method for producing an organic polymer having a terminal trimethoxy silyl group. In the method, the exchange reaction into a methoxy group can proceed within a short time even with a small amount of a catalyst, and viscosity increase caused by a side reaction during the methoxy exchange reaction can be reduced. Obtained polymer has an excellent stability, and viscosity increase during the storage of the polymer after the exchange into a trimethoxysilyl group can be reduced. The present invention provides a method comprising the steps of allowing an organic polymer having a silicon atom at a molecular terminus to react with methanol in the presence of a catalyst removable from an organic polymer and/or a deactivatable catalyst, wherein three hydrolyzable groups are bonded to the silicon atom, with the proviso that at least one of the three groups is a functional group other than methoxy group; and then removing the catalyst from the reaction mixture and/or deactivating the catalyst in the reaction mixture, to give the organic polymer having a terminal trimethoxysilyl group.

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First Claim