-
公开(公告)号：US5462536A
公开(公告)日：1995-10-31
申请号：US91532
申请日：1993-07-14
CPC分类号： A61L15/26
摘要： Controlled release membranes are prepared from polyureaurethane polymer derived from prepolymer units at least 75% of which are oxyethylene-based diols or polyols having essentially all of the hydroxyl groups capped with polyisocyanate are disclosed. The membranes are characterized by their biocompatibility and resistance to nonspecific protein adsorption and are particuarly useful for delivery of proteinaceous materials in drug-delivery systems, i.e., wound dressings. Also disclosed are novel biocompatible, protein-nonadsorptive hydrated polymers and the method of producing the same.
摘要翻译： 公开了控制释放膜，其由衍生自预聚物单元的聚脲聚氨酯聚合物制备，其中至少75％是基于氧化乙烯的二醇或基本上具有用多异氰酸酯封端的羟基的多元醇。 膜的特征在于它们的生物相容性和对非特异性蛋白质吸附的抗性，并且对于在药物递送系统（即伤口敷料）中递送蛋白质材料是特别有用的。 还公开了新的生物相容性，蛋白质 - 非吸收性水合聚合物及其制备方法。
-
2.发明授权Hydrophilic polyurethaneurea foams containing no toxic leachable additives and method to produce such foams 失效不含有毒的可浸出添加剂的亲水性聚氨酯脲泡沫体以及生产这种泡沫的方法
公开(公告)号：US5296518A
公开(公告)日：1994-03-22
申请号：US809363
申请日：1991-12-18
CPC分类号： A01K97/045 , A61L31/06 , C08G18/3221 , C08G18/4283 , C08G18/4286 , C08G18/4887 , C08G2101/0083 , C08G2220/00 , C08G2230/00
摘要： Hydrophilic polyurethane urea foams which are made without toxic, leachable additives are disclosed. High molecular weight, isocyanate-terminated, ethylene oxide-rich prepolymers are used in place of surfactants to make the foams.
摘要翻译： 公开了没有有毒的可浸出添加剂制成的亲水性聚氨酯脲泡沫。 使用高分子量，异氰酸酯封端的富环氧乙烷预聚物代替表面活性剂以制备泡沫体。
-
3.发明授权Biocompatible polyurethanes modified with lower alkyl sulfonate and lower alkyl carboxylate 失效用低级烷基磺酸酯和低级烷基羧酸酯改性的生物相容性聚氨酯
公开(公告)号：US4880883A
公开(公告)日：1989-11-14
申请号：US57546
申请日：1987-06-03
CPC分类号： C08G18/83 , A61L27/18 , C08G18/0819
摘要： Modified-polyurethane block copolymers and devices formed therefrom demonstrate excellent biocompatibility and improved physical and mechanical properties. In a preferred embodiment, from about 5 to about 25 percent of urethane hydrogen atoms are replaced with propyl sulfonate and propyl carboxylate groups to provide the modified copolymer.
摘要翻译： 改性聚氨酯嵌段共聚物和由其形成的装置显示出优异的生物相容性和改善的物理和机械性能。 在优选的实施方案中，约5至约25％的氨基甲酸酯氢原子被丙磺酸酯和羧酸丙酯基团取代以提供改性的共聚物。
-
4.发明授权Biocompatible polyurethane devices wherein polyurethane is modified with lower alkyl sulfonate and lower alkyl carboxylate 失效其中聚氨酯用低级烷基磺酸酯和低级烷基羧酸酯改性的生物相容性聚氨酯装置
公开(公告)号：US5017664A
公开(公告)日：1991-05-21
申请号：US333991
申请日：1989-04-05
CPC分类号： C08G18/83 , A61L27/18 , C08G18/0819
摘要： Modified-polyurethane block copolymers and devices formed therefrom demonstrate excellent biocompatibilty and improved physical and mechanical properties. In a preferred embodiment, from about 5 to about 25 percent of urethane hydrogen atoms are replaced with propyl sulfonate and propyl carboxylate groups to provide the modified copolymer.
摘要翻译： 改性聚氨酯嵌段共聚物和由其形成的装置显示出优异的生物相容性和改善的物理和机械性能。 在优选的实施方案中，约5至约25％的氨基甲酸酯氢原子被丙磺酸酯和羧酸丙酯基团取代以提供改性的共聚物。
-
公开(公告)号：US5387633A
公开(公告)日：1995-02-07
申请号：US208764
申请日：1994-03-08
申请人： Richard W. Bush , Eugene E. Carney , Shao-Hai Wu , Felek Jachimowicz , Timothy G. Grasel , Tsutomu Takeuchi
发明人： Richard W. Bush , Eugene E. Carney , Shao-Hai Wu , Felek Jachimowicz , Timothy G. Grasel , Tsutomu Takeuchi
CPC分类号： C08K5/0016
摘要： Copolymers of styrene and sodium styrene sulfonate can be combined with a plasticizer to make a non-PVC plastisol sealant for containers.
摘要翻译： 苯乙烯和苯乙烯磺酸钠的共聚物可与增塑剂组合以制备用于容器的非PVC增塑溶胶密封剂。
-
公开(公告)号：US5104909A
公开(公告)日：1992-04-14
申请号：US410458
申请日：1989-09-21
CPC分类号： C08G18/6677 , C08G18/225 , C08G18/4833 , C08G18/6688 , C08G18/758 , C08G2101/0008 , C08G2101/005
摘要： A water absorbent, relatively dimensionally stable foam is formed from a prepolymer prepared from a polyoxyethylene containing diol, a crosslinking agent and a polyisocyanate. The preferred polyisocyanate is methylene bis(cyclohexyl isocyanate). The foam also demonstrates the ability to hold substantial amounts of water, even under pressure, and can be used in various personal and medical care products such as diapers and surgical sponges.
-
7.发明授权Packaging material containing inherently antistatic polymeric foam and method for use thereof 失效包含全自动聚合物泡沫的包装材料及其使用方法
公开(公告)号：US5096934A
公开(公告)日：1992-03-17
申请号：US410775
申请日：1989-09-21
IPC分类号： B65D85/86 , B65D65/38 , B65D81/24 , B65D85/38 , C08G18/10 , C08G18/42 , C08G18/48 , C08G18/66 , C08G101/00 , C08J9/02 , H01L23/60
CPC分类号： C08G18/6677 , B65D65/38 , B65D81/24 , C08G18/4833 , H01L23/60 , C08G2101/0083 , H01L2924/0002
摘要： Packaging materials containing inherently antistatic foams and a method of using the foams are disclosed. The foam used is a polyether polyurethane foam prepared from an isocyanate containing prepolymer which is the reaction product of a oxyethylene containing polyol and a polyisocyanate. The foams show surface resistivity of less than 1.times.10.sup.12 ohms/square and static decay times of about two seconds or less. A preferred foam shows static decay times of 0.1 seconds or less. The packaging includes articles used around static sensitive devices or used to store or transport static sensitive devices.
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.024 秒)
