A self-crosslinkable resin prepared by (1) reacting a hydroxy-containing vinyl monomer with some isocyanate groups on the skeleton of a vinyl polymer having at least two isocyanate groups in the molecule to introduce a polymerizable double bond into the polymer, subsequently completely blocking the isocyanate group(s) remaining on the polymer skeleton with a blocking agent, and thereafter polymerizing an unsaturated monomer component consisting essentially of a hydroxyl-containing vinyl monomer with the polymerizable double bond introduced; or (2) blocking some isocyanate groups on the polymer skeleton with a blocking agent, subsequently reacting a hydroxyl-containing vinyl monomer with the isocyanate group(s) remaining on the polymer skeleton to introduce a polymerizable double bond into the polymer, and thereafter polymerizing an unsaturated monomer component consisting essentially of a hydroxyl-containing vinyl monomer with the polymerizable double bond introduced.
一种可自交联
树脂,其制备方法为:(1) 使含羟基的
乙烯基单体与
乙烯基聚合物骨架上的一些
异氰酸酯基团反应,该聚合物分子中至少含有两个
异氰酸酯基团,从而在聚合物中引入可聚合双键,随后用封端剂完全封端聚合物骨架上残留的
异氰酸酯基团,再使主要由含羟基的
乙烯基单体组成的不饱和单体组分与引入的可聚合双键聚合;或 (2) 用封端剂封端聚合物骨架上的一些
异氰酸酯基团,随后使含羟基的
乙烯基单体与聚合物骨架上残留的
异氰酸酯基团反应,在聚合物中引入可聚合双键,然后聚合基本上由含羟基的
乙烯基单体组成的不饱和单体组分,并引入可聚合双键。