Developement of Spherical Polyurethane Beads

作     者：K. Maeda H. Ohmori H. Gyotoku 

作者机构：Sanyo Chemical Industries Ltd. 11-1 Ikkyo Nomoto-choHigashiyama-kuKyotoJapanSanyo Chemical Industries Ltd. 11-1 Ikkyo Nomoto-choHigashiyama-kuKyotoJapanSanyo Chemical Industries Ltd. 11-1 Ikkyo Nomoto-choHigashiyama-kuKyotoJapan 

出 版 物：《复旦学报（自然科学版）》 (Journal of Fudan University：Natural Science)

年 卷 期：2005年第44卷第5期

页      面：819-820页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

主　　题：聚亚安酯 球形珠 酮亚氨 有限分布 封闭环 

摘      要：We established a new method to produce the spherical polyurethane beads which have narrower distribution of particle size. This narrower distribution was achieved by the polyurethane prepolymer which contains ketimine as a blocked chain-extending agent. Firstly, the prepolymer is dispersed into the aqueous solution containing surfactant. Secondaly, water comes into the inside of prepolymer as oil phase. Thirdly, ketimine is hydrolyzed to amine, and amine reacts with prepolymer immediately to be *** spherical polyurethane beads are very suitable for automotive interior parts especially for instrument panel cover sheet producing under the slush molding method, because of good process ability, excellent durability to the sunlight and mechanical properties at low temperature. See Fig. 1 ,Fig. 2 and Fig. 3 (Page 820).