| 摘要 |
PURPOSE:To form a polyether useful as a base polymer for a room temperature- curable composition which can give a rubber-like cured product of a high elongation and excellent adhesiveness, by reacting a polyester having terminals blocked with epoxy groups with an imino group-containing heterocyclic compound and an organosilicon compound. CONSTITUTION:A polyether (A) having terminals blocked with epoxy groups, represented by formula I (wherein R<1> and R<2> are each a bivalent hydrocarbon group and m is a number of 10-500), is reacted with a heterocyclic compound (B) having two imino groups bonded to different carbon atoms in the molecule and an organosilicon compound (C) having epoxy and hydrolyzable groups, represented by formula II (wherein R<3> and R<4> are each a bivalent hydrocarbon group, R<5> is a monovalent hydrocarbon group, R<6> is a 1-6C alkyl group and a is a number of 1-3). In this way, a polyether having terminals blocked with hydrolyzable silyl groups and a mo.wt. of 1,000-50,000, represented by formula III (wherein X is a residue of the compound (B), n is a number >=1, a, m and R<1>-R<6> are as defined above), can be obtained.
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