聚胺基甲酸酯发泡体及其制造方法;POLYURETHANE FOAMS AND METHOD FOR PRODUCING SAME

摘要

于本文中所描述的组成物提供一种挠性聚胺基甲酸酯射出成型发泡体，其系从至少一种多元醇、至少一种异氰酸酯及至少一种链伸长剂之反应产物制造，其中该聚胺基甲酸酯具有：(a)120,000至500,000之重量平均分子量，及(b)1.85至2.51之分散度(Mw/Mn)。该组成物进一步包括优异的发泡体，其中该挠性聚胺基甲酸酯射出成型发泡体具有至少30%的垂直回弹，如藉由ASTM D2632测量；不超过25%的在室温下的压缩定型，如藉由ASTM D395测量；不超过50%的在50℃下的压缩定型，如藉由ASTM D395测量；及40至65的Asker C硬度，如藉由ASTM D2240测量。本发明亦提供一种制造其之方法及从其制造的物件。; a compression set at room temperature, as measured by ASTM D395, of no more than 25%; a compression set at 50℃, as measured by ASTM D395, of no more than 50%; and an Asker C hardness, as measured by ASTM D2240, of 40 to 65. Also provided are process of making the same and articles made from the same.