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公开(公告)号：US06294638B1
公开(公告)日：2001-09-25
申请号：US09415341
申请日：1999-10-08
IPC分类号： C08G1848
CPC分类号： C08G18/6674
摘要： A soft, transparent and processable thermoplastic polyurethane resin suitable in optical application is disclosed. The resin is the product of reacting a diisocyanate, a chain extender, and a mixture of polyether polyols. The mixture of polyether polyols comprise (A) a C4 polyether polyol and (B) a C2-C3 polyether polyol where the weight ratio A/B is in the range of about 85/15 to 15/85.
摘要翻译： 公开了一种适用于光学应用的柔软，透明和可加工的热塑性聚氨酯树脂。 树脂是使二异氰酸酯，扩链剂和聚醚多元醇的混合物反应的产物。 聚醚多元醇的混合物包含（A）C4聚醚多元醇和（B）C2-C3聚醚多元醇，其中重量比A / B在约85/15至15/85的范围内。
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2.发明授权Aliphatic thermoplastic polyurethanes, a process for producing them and the use thereof 有权脂肪族热塑性聚氨酯，其制造方法及其用途公开(公告)号：US06559266B2
公开(公告)日：2003-05-06
申请号：US09447025
申请日：1999-11-22
申请人： Wolfgang Kaufhold , Wolfgang Braeuer , Hans-Georg Wussow , Hans-Georg Hoppe , Steven C. Manning
发明人： Wolfgang Kaufhold , Wolfgang Braeuer , Hans-Georg Wussow , Hans-Georg Hoppe , Steven C. Manning
IPC分类号： C08G1842
CPC分类号： C08G18/73 , C08G18/6607 , C08G18/758
摘要： A molding composition comprising thermoplastic polyurethane is disclosed. The polyurethane is characterized in having ultimate tensile strength (UTS) and elongation at break (EAB) values after hot storage which are, each, at least 60% of the corresponding value before hot storage, glass transition temperature equal to or lower than −50° C., UTS and EAB values after hydrolytic storage which are, each, at least 80% of the corresponding value before hydrolytic storage, and Shore A hardness of 70 to 95. The polyurethane is a product of a reaction comprising an aliphatic diisocyanate, a mixture of polyols and a chain extender and contains a UV stabilizer, an antioxidant and an optional anti-hydrolysis agent.
摘要翻译： 公开了一种包含热塑性聚氨酯的模制组合物。 聚氨酯的特征在于在热存储之后具有极限拉伸强度（UTS）和断裂伸长率（EAB）值，它们各自在热存储之前的相应值的至少60％，玻璃化转变温度等于或低于-50 水解储存后的UTS和EAB值各自为水解储存前相应值的至少80％，肖氏A硬度为70至95.聚氨酯是包含脂族二异氰酸酯， 多元醇和扩链剂的混合物，并含有UV稳定剂，抗氧化剂和任选的抗水解剂。
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