| 摘要 |
PURPOSE:To obtain the titled copolymer for a cold-curing composition having excellent adhesivity and giving a cured rubbery material having high extensibility, by reacting a specific polyoxyalkylene blocked its terminal with epoxy group, a specific siloxane containing amino group and a specific organic silicon compound. CONSTITUTION:The objective copolymer can be produced by reacting (A) a polyoxyalkylene of formula I (R<1> and R<2> are bivalent hydrocarbon group; n is 10-500) having molecular chain terminals blocked with epoxy groups, (B) a siloxane of formula II (R<3> is H or univalent hydrocarbon group; R<4> is bivalent hydrocarbon group; R<5> is univalent hydrocarbon group; m is 1-50) having two amino groups in a molecule and (C) an organic silicon compound of formula III (R<6> is H or univalent hydrocarbon group; R<7> is bivalent hydrocarbon group; R<8> is univalent hydrocarbon group; X is hydrolyzable group; a is 1-3) and having amino group and hydrolyzable group.
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