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    • 6. 发明授权
    • Silicone foams
    • 硅胶粉丝
    • US5153231A
    • 1992-10-06
    • US849855
    • 1992-03-12
    • Philippe L. BouquetDavid Pocknell
    • Philippe L. BouquetDavid Pocknell
    • A61C9/00A61L26/00B65D81/32C08J9/02C08K5/06C08K5/5419C08L83/04C08L83/05C08L83/06C08L83/07
    • C08J9/02A61C5/064A61C9/0026A61L26/0019A61L26/0085B65D81/325C08L83/04C08J2383/04
    • A multi-component foamable silicone composition is described and claimed which is capable of curing quickly at 20.degree. C. to provide a low density foamed mass. The composition comprises (A) one or more polydiorganosiloxanes having not less than three alkyl-hydrogensiloxane units per molecule, (B) one or more polydiorganosiloxanes having not less than two alkenyl-siloxane units (C) a liquid alcohol, (D) a fluorinated silicone foam stabilizing material and (E) a platinum catalyst for promoting reaction between the components. The composition may be packaged as two or more individually stable parts of substantially equal volume and viscosity each in a receptacle of material which is adapted to be opened by rupture so as to release the components for admixture. The composition is intended for use in forming a foam medical dressing by dispensing onto a surface e.g. an open wound and allowing the composition to cure at room temperature.
    • 描述和要求保护的多组分可发泡硅氧烷组合物,其能够在20℃下快速固化以提供低密度发泡团块。 该组合物包含(A)每分子具有不少于三个烷基 - 氢硅氧烷单元的一种或多种聚二有机硅氧烷,(B)一种或多种具有不少于2个烯基 - 硅氧烷单元的聚二有机硅氧烷(C)液体醇,(D)氟化 硅氧烷泡沫稳定材料和(E)促进组分之间的反应的铂催化剂。 组合物可以作为两个或更多个单独稳定的部分包装,每个部分具有基本上相同的体积和粘度,每个在容器的容器中,其适于通过破裂而打开,以便释放用于混合的组分。 该组合物旨在用于通过分配到表面上形成泡沫医疗敷料,例如, 开放的伤口并使组合物在室温下固化。
    • 7. 发明授权
    • Therapeutic rings
    • 治疗环
    • US4888074A
    • 1989-12-19
    • US222441
    • 1988-07-21
    • David Pocknell
    • David Pocknell
    • A61K9/00A61K31/565A61M31/00
    • A61K9/0036A61K9/0039A61M31/002Y10T156/1036Y10T156/1062
    • The specification describes and claims a method of making therapeutic rings from a curable silicone rubber based composition. The rings are capable of controlled release of the therapeutic agent in the human or animal body. The method includes the steps of:(i) extruding a first composition comprising a therapeutic agent and a first elastomer-forming silicone composition to provide a core;(ii) extruding a second composition comprising a second elastomer-forming silicone composition to provide a sheath enclosing the core;(iii) bringing together end portions of a piece of extruded core and sheath to form a ring,(iv) effecting crosslinking of the extruded core, and(v) effecting crosslinking of the extruded sheath.
    • 本说明书描述并要求从可固化的硅橡胶基组合物制备治疗环的方法。 环能够在人或动物体内控制释放治疗剂。 该方法包括以下步骤:(i)挤出包含治疗剂和第一弹性体形成性硅氧烷组合物的第一组合物以提供核心; (ii)挤出包含第二弹性体形成性硅氧烷组合物的第二组合物,以提供包封芯的护套; (iii)将一片挤出的芯和护套的端部组合在一起形成环,(iv)实现挤出的芯的交联,和(v)实现挤出的护套的交联。