公开(公告)号：KR100738126B1

公开(公告)日：2007-07-10

申请号：KR1020060056066

申请日：2006-06-21

Applicant: 현대자동차주식회사

Inventor： 김병규 ,  이민희 ,  조성만

IPC: C08G18/09 ,  C08G18/82 ,  C08G18/00 ,  C08J7/18

Abstract: A method for preparing a highly heat resistant UV curable aqueous polyurethane resin is provided to obtain an aqueous polyurethane having improved heat resistance, fast reaction completion behavior and improved surface properties. The method for preparing a highly heat resistant UV curable aqueous polyurethane resin comprises the steps of: reacting a carboxy group-containing diol with a linear diisocyanate in a weight ratio of 1:2 to provide an isocyanate-terminated oligomer; forming a soft segment and a hard segment; mixing the soft segment with the hard segment in a weight ratio of 7:3-9:1 to provide a prepolymer; reacting the prepolymer with a monovalent hydroxy acrylate in a weight ratio of 43:1 to allow the isocyanate terminal to be end-capped with acrylate; dispersing the end-capped product in water to provide an aqueous polyurethane; and curing the aqueous polyurethane resin with UV rays under a dose of 800-1150 mJ/cm^2 for 10-120 seconds.

Abstract translation: 提供一种制备高耐热紫外线可固化含水聚氨酯树脂的方法，以获得具有改善的耐热性，快速反应完成行为和改善的表面性能的含水聚氨酯。 制备高耐热性UV可固化含水聚氨酯树脂的方法包括以下步骤：使含羧基的二醇与直链二异氰酸酯以1：2的重量比反应以提供异氰酸酯封端的低聚物; 形成软段和硬段; 将软链段与硬链段以7：3-9：1的重量比混合以提供预聚物; 使预聚物与单价羟基丙烯酸酯以43：1的重量比反应以允许异氰酸酯末端用丙烯酸酯封端; 将封端产物分散在水中以提供含水聚氨酯; 并在800-1150mJ /平方公分的剂量下用紫外线固化水性聚氨酯树脂10-120秒。