申请人:Kuraray Co., Ltd.
公开号:US20030204033A1
公开(公告)日:2003-10-30
(1) A methacrylic ester or an acrylic ester is anionically polymerized, using a polymerization initiator compound comprising an addition reaction product of a conjugated diene compound and an organic alkali metal compound, in the presence of a tertiary organoaluminum compound having in the molecule thereof a chemical structure represented by a formula: Al—O—Ar wherein Ar represents an aromatic ring; or
(2) a methacrylic ester or an acrylic ester is anionically polymerized, using a polymerization initiator compound comprising an addition reaction product of an organic alkali metal compound and a compound having a 1,1-diaryl-1-alkene structure, by adding the ester in the form of a mixture with the above-mentioned specific tertiary organoaluminum compound to the polymerization system.
In this way, various species of the esters can be anionically polymerized with a high initiation efficiency and a high living polymerization property in a solvent which can easily be recovered and reused under a mild cooling condition, using an organic alkali metal compound which has relatively good convenience.
(1) 采用聚二烯化合物和有机碱金属化合物的加成反应产物组成的聚合引发剂化合物,在三级有机铝化合物的存在下,阴离子聚合甲基丙烯酸酯或丙烯酸酯,该三级有机铝化合物的分子中具有以下化学结构的公式:Al-O-Ar,其中Ar代表芳香环;或
(2) 采用有机碱金属化合物和具有1,1-二芳基-1-烯烃结构的化合物的加成反应产物组成的聚合引发剂化合物,将酯以与上述特定三级有机铝化合物的混合物形式添加到聚合体系中,从而在可以轻松回收和在温和冷却条件下重复使用的溶剂中,使用相对方便的有机碱金属化合物高效引发各种酯的阴离子聚合,并具有高活性聚合性能。