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    • 41. 发明授权
    • Acrylamide derivatives and polymers containing said derivatives
    • 含有所述衍生物的丙烯酰胺衍生物和聚合物
    • US06495645B1
    • 2002-12-17
    • US09889953
    • 2001-08-30
    • Teruo OkanoTakao Aoyagi
    • Teruo OkanoTakao Aoyagi
    • C08F12238
    • C07C233/49C07C233/38C08F20/54
    • An acrylamide derivative of the following general formula (I) is used to prepare a polymer or copolymer: wherein R1 represents a hydrogen atom, a straight-chain or branched alkyl group containing 1 to 4 carbon atoms or a C3-6 cycloalkyl group, R2 and R3 each independently represent an alkylene group containing 1 to 6 carbon atoms or R2 and R3 may be combined to form a ring, X represents a hydrogen atom, an amino group, a hydroxyl group, a halogen atom, a carboxyl group or a —COOR4 group wherein R4 represents a C1-6 straight-chain or branched alkyl, C3-6 cycloalkyl, phenyl, substituted phenyl, benzyl or substituted benzyl group, and Y represents an amino group, a halogen atom, a carboxyl group or a —COOR4 group wherein R4 represents a C1-6 straight-chain or branched alkyl, C3-6 cycloalkyl, phenyl, substituted phenyl, benzyl or substituted benzyl group. The thus obtained polymer or copolymer is a polymer or hydrogel incorporating many functional groups while maintaining the sensitive temperature response.
    • 使用以下通式(I)的丙烯酰胺衍生物来制备聚合物或共聚物:其中R 1表示氢原子,含有1至4个碳原子的直链或支链烷基或C 3-6环烷基,R 2 R 3各自独立地表示碳原子数1〜6的亚烷基,R 2和R 3可以结合形成环,X表示氢原子,氨基,羟基,卤素原子,羧基或 - COOR 4基团,其中R 4表示C 1-6直链或支链烷基,C 3-6环烷基,苯基,取代的苯基,苄基或取代的苄基,Y表示氨基,卤素原子,羧基或-COOR 4 基团,其中R 4表示C 1-6直链或支链烷基,C 3-6环烷基,苯基,取代的苯基,苄基或取代的苄基。 由此获得的聚合物或共聚物是在保持敏感的温度响应的同时引入许多官能团的聚合物或水凝胶。
    • 45. 发明授权
    • Transdermal delivery system utilizing one way membranes
    • 使用单向膜的透皮递送系统
    • US5223262A
    • 1993-06-29
    • US565479
    • 1990-08-10
    • Sung W. KimTeruo OkanoSoon H. Yuk
    • Sung W. KimTeruo OkanoSoon H. Yuk
    • A61K9/70
    • A61K9/7084A61K9/7092Y10T428/31511Y10T428/31663
    • A system for transdermally delivering a hydrophobic alkanol soluble active agent to the skin at a constant rate utilizing a lower alkanol penetration enhancer. The system comprises an overlying solvent reservoir containing a lower alkanol solvent and a drug compartment containing an active agent in aqueous alkanol. A one-way membrane is sandwiched between and divides the solvent reservoir from the drum compartment. The one-way membrane is permeable to the alkanol solvent and substantially impermeable to back flux of drug and water into the reservoir. An outer membrane permeable to the alkanol solvent and drug is attached to the outer surface of the drug compartment. Adhesive means is contained on the outer surface of this membrane for attaching the delivery system to the skin of a wearer. Alkanol from the reservoir permeates into the drug compartment and drug and alkanol pass through the outer membrane to the skin of the wearer for transdermal absorption. The rate of alkanol permeation from the reservoir to the drug compartment and from the drug compartment to the skin is substantially constant. The membrane is made up of an epoxidized silicone rubber to which is preferably laminated a layer of a dense hydrophobic copolymer of vinyl-terminated polydimethyl siloxane with methylhydro-dimethyl siloxane. If desired, to prevent any back flux of hydrophobic drugs, and additional layer of cellulose acetate may be sandwiched between the epoxidized silicone rubber and dense hydrophobic membrane.
    • 一种利用低级烷醇渗透增强剂以一定速率将疏水性链烷醇可溶性活性剂透皮递送至皮肤的系统。 该系统包括含有低级链烷醇溶剂的上层溶剂储存器和在链烷醇水溶液中含有活性剂的药物隔室。 单向膜夹在溶剂容器和鼓室之间。 单向膜对于链烷醇溶剂是可渗透的,并且基本上不可渗透地将药物和水的通量回流到储存器中。 可通过链烷醇溶剂和药物的外膜附着到药物隔室的外表面。 粘合剂装在该膜的外表面上,用于将输送系统附着到穿着者的皮肤上。 来自储存器的烷醇渗透到药物隔室中,药物和链烷醇通过外膜到穿着者的皮肤以经皮吸收。 从储存器到药物隔室以及从药物室到皮肤的链烷醇渗透速率基本上是恒定的。 膜由环氧化的硅橡胶组成,其优选层压有乙烯基封端的聚二甲基硅氧烷与甲基氢二甲基硅氧烷的致密疏水性共聚物层。 如果需要,为了防止疏水性药物的任何回流,并且附加的乙酸纤维素层可夹在环氧化硅橡胶和致密疏水膜之间。
    • 46. 发明授权
    • Heterogeneous interpenetrating polymer networks for the controlled
release of drugs
    • 用于控释药物的非均相互穿聚合物网络
    • US4931287A
    • 1990-06-05
    • US206593
    • 1988-06-14
    • You H. BaeTeruo OkanoSung W. Kim
    • You H. BaeTeruo OkanoSung W. Kim
    • A61K9/20
    • A61K9/2031A61K9/2027
    • A heterogeneous interpenetrating polymer network is provided for use in the controlled release of drugs. The network is a heterogeneous matrix that is formed from a hydrophilic component such as polyethylene oxide or poly(N,N'-dimethyl acrylamide-co-styrene) and a hydrophobic component such as styrene, an alkyl methacrylate, or polytetramethylene ether glycol. The relative amounts of the two components, or "domains", can be varied, as can the diffusivities and solubilities of the drug combinations to be loaded therein, to control and change as desired the timed release profile of incorporated drug. Prolonged pseudo-zero order release can be obtained where one domain acts as a diffusion barrier layer to the release of drug from the other domain.
    • 提供异构互穿聚合物网络用于药物的控制释放。 该网络是由亲水组分如聚环氧乙烷或聚(N,N'-二甲基丙烯酰胺 - 共 - 苯乙烯)和疏水组分如苯乙烯,甲基丙烯酸烷基酯或聚四亚甲基醚二醇形成的非均相基体。 可以改变两种组分或“结构域”的相对量,以及待加载的药物组合的扩散性和溶解度,以控制并根据需要改变并入药物的定时释放曲线。 可以获得延长的伪零次释放,其中一个结构域充当从另一个域释放药物的扩散阻挡层。