An object of the present invention is to provide a method for producing a polymer compound having a crosslinkable group, the polymer compound having a low content of low-molecular-weight compounds and sufficiently low polydispersity. The method for producing a polymer compound having a crosslinkable group comprises the steps of: (1) polymerizing a monomer component in a solvent in the presence of a transition metal complex to thereby obtain a first polymer compound having a crosslinkable group, wherein the monomer component comprises a monomer having a crosslinkable group; and (2) mixing a solution containing a first solvent and the first polymer compound with a second solvent, followed by separation into two or more layers, and selecting a layer containing a polymer compound having the largest polystyrene-equivalent weight average molecular weight to thereby obtain a second polymer compound having a crosslinkable group, wherein the first solvent contains a solvent of the same kind as the solvent used in step (1), the second solvent is a poor solvent for the first polymer compound, and the solvent contained in each of the two or more layers is substantially an organic solvent.
本发明的目的是提供一种生产具有可交联基团的聚合物化合物的方法,该聚合物化合物具有较低的低分子量化合物含量和足够低的多分散性。生产具有可交联基团的聚合物化合物的方法包括以下步骤:(1) 在过渡
金属复合物存在下,在溶剂中聚合单体组分,从而获得第一种具有可交联基团的聚合物化合物,其中单体组分包括具有可交联基团的单体;(2) 将含有第一种溶剂和第一种聚合物化合物的溶液与第二种溶剂混合,然后分离成两层或多层,并选择含有聚
苯乙烯当量重平均分子量最大的聚合物化合物的一层,从而得到具有可交联基团的第二种聚合物化合物,其中第一种溶剂含有与步骤(1)中所用溶剂相同种类的溶剂,第二种溶剂是第一种聚合物化合物的劣溶剂,两层或多层中每一层所含的溶剂基本上是有机溶剂。