| 摘要 |
Process for the preparation of grafted solid materials of water-affinitive polymers such as polyvinyl alcohol, acetalized polyvinyl alcohol, polyamide, polyacrylonitrile and cellulose, which comprises immersing said solid material in an aqueous solution or suspension of an ester of acrylic acid or metacrylic acid at a temperature of 40 DEG - 120 DEG C., in the presence of 20 - 1,000 ppb of molecular oxygen, as a reaction initiating component, in the aqueous solution or suspension. In this way, the graft polymerization reaction is initiated smoothly and high reaction rate of the graft polymerization is obtained without the substantial formation of homopolymer of the ester in the liquid phase. |
