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    • 5. 发明授权
    • Controlled release products and processes for the preparation thereof
    • 控制释放产品及其制备方法
    • US06987082B2
    • 2006-01-17
    • US10684162
    • 2003-10-10
    • Edze Jan TijsmaJohannes Gijsbertus Antonius TerlingenSaskia Haas-SchrijenHein Herman Vriesema
    • Edze Jan TijsmaJohannes Gijsbertus Antonius TerlingenSaskia Haas-SchrijenHein Herman Vriesema
    • C05G3/02
    • C05G3/0029A01N25/26Y10T436/101666
    • A controlled release product is provided having a suppressed initial release period and a predetermined longevity. The product includes a particulate water soluble core material and a semi-permeable coating layer applied on the core material for controlling the release rate of the core material. The semi-permeable coating layer is formulated in accordance with the following equation to provide a release rate wherein initial release of core material from the product is suppressed so that less than about 15 weight percent of core material is released from the product within a 24 hour period after application of the product and wherein longevity of release, at ambient temperature, between the time of application and the time at which at least about 75 weight percent of the core material is released from the product is 60 days or less: WVTR = ϕ · δ π ⁢ ⁢ d 2 wherein: (i) WVTR is the water vapor transmission rate of the semi-permeable coating expressed in grams·μm/meters2·day; (ii) φ is the water diffusion rate (water flux) through the semi-permeable coating expressed in grams/day; (iii) δ is the thickness of the coating layer expressed in μm; and (iv) d is the average diameter of the particulate core material expressed in meters.
    • 提供具有抑制的初始释放期和预定寿命的控释产品。 该产品包括颗粒状水溶性芯材和应用于芯材上的半渗透涂层,用于控制芯材的释放速率。 根据以下等式配制半透性涂层以提供释放速率,其中芯材料从产品中的初始释放被抑制,使得在24小时内从产品中小于约15重量%的芯材料被释放 在使用产品之后的时间段,并且在环境温度下,在施用时间和从产品中释放核心材料的至少约75重量%的时间之间的释放寿命为60天或更短: WVTR = pi MROW> 其中:(i)WVTR是半透膜的水蒸汽透过率,单位为克米/米 2 。 (ii)phi是通过半透膜的水扩散速率(水通量),以克/天表示; (iii)δ是以mum表示的涂层的厚度; 和(iv)d是表示为米的颗粒状芯材的平均直径。
        • 7. 发明授权
        • Controlled release products and processes for the preparation thereof
        • 控制释放产品及其制备方法
        • US06656882B2
        • 2003-12-02
        • US09795840
        • 2001-02-28
        • Edze Jan TijsmaJohannes Gijsbertus Antonius TerlingenSaskia Haas-SchrijenHein Herman Vriesema
        • Edze Jan TijsmaJohannes Gijsbertus Antonius TerlingenSaskia Haas-SchrijenHein Herman Vriesema
        • C05G302
        • C05G3/0029A01N25/26Y10T436/101666
        • A controlled release product is provided having a suppressed initial release period and a predetermined longevity. The product includes a particulate water soluble core material and a semi-permeable coating layer applied on the core material for controlling the release rate of the core material. The semi-permeable coating layer is formulated in accordance with the following equation to provide a release rate wherein initial release of core material from the product is suppressed so that less than about 15 weight percent of core material is released from the product within a 24 hour period after application of the product and wherein longevity of release, at ambient temperature, between the time of application and the time at which at least about 75 weight percent of the core material is released from the product is 60 days or less: WVTR = φ · δ π ⁢   ⁢ d 2 wherein: (i) WVTR is the water vapor transmission rate of the semi-permeable coating expressed in grams·&mgr;m/meters2·day; (ii) &phgr; is the water diffusion rate (water flux) through the semi-permeable coating expressed in grams/day; (iii) &dgr; is the thickness of the coating layer expressed in &mgr;m; and (iv) d is the average diameter of the particulate core material expressed in meters.
        • 提供具有抑制的初始释放期和预定寿命的控释产品。 该产品包括颗粒状水溶性芯材和应用于芯材上的半渗透涂层,用于控制芯材的释放速率。 根据以下等式配制半透性涂层以提供释放速率,其中芯材料从产品中的初始释放被抑制,使得在24小时内从产品中小于约15重量%的芯材料被释放 施用产品之后的时间段,其中在环境温度下,在施用时间和从产物中释放核心材料的至少约75重量%的时间之间的释放寿命为60天以下:其中:( i)WVTR是半渗透膜的水蒸汽透过率,以克/米2日为单位表示;(ii)phi是通过半渗透性涂层的水扩散速率(水通量),以克表示 /天;(iii)三角洲是以妈妈表示的涂层的厚度; 和(iv)d是表示为米的颗粒状芯材的平均直径。