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    • 38. 发明申请
    • HYBRID STRATEGIES FOR REDUCING LEACHING OF METAL BIOCIDES FROM BIODEGRADABLE SUBSTRATES
    • 用于减少生物可降解基底上金属生物的浸出的混合策略
    • WO2009114171A2
    • 2009-09-17
    • PCT/US2009/001586
    • 2009-03-12
    • UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY LLCKEEN, Brian, T.HAYSON, Kimberly, S.HOFFMAN, William, C.JOSEPH, Albert, F.
    • KEEN, Brian, T.HAYSON, Kimberly, S.HOFFMAN, William, C.JOSEPH, Albert, F.
    • A01N55/02A01P1/00A01P3/00A01P7/04
    • A01N59/20B27K3/16B27K3/50Y10T428/662A01N25/04A01N25/30A01N33/08A01N33/12A01N2300/00
    • Hybrid strategies generally involve treating biodegradable substrates with preservative compositions having at least two phases in which the metal biocide is distributed among at least the two phases and via equilibrium reactions moves between the two phases. Both phases are caused to contact the substrate in a manner so that the phases are in contact with each other during at least a portion of the treatment. In illustrative embodiments, the first phase is a liquid phase comprising complexed metal biocide dissolved in a liquid carrier, while the second phase comprises particles comprising the metal biocide, often precipitated and/or colloidal particles. The strategies and related compositions, processes, and treatments are hybrid in the sense that the strategies include both heterogeneous (insoluble) and homogeneous metal biocide constituents. Unlike heterogeneous strategies, hybrid strategies are less sensitive to particle size constraints and may use biocide particles with a wider range of particle sizes. Unlike homogeneous strategies, hybrid strategies are less sensitive to pH and may use a wider range of complexing agents, including mildly alkaline amines such as triethanolamine.
    • 混合策略通常包括用具有至少两个相的防腐剂组合物处理可生物降解的底物,其中金属杀生物剂在至少两相之间分配,并通过平衡反应在两相之间移动。 引起两相以这样的方式与基底接触,使得在治疗的至少一部分期间相的相互接触。 在说明性实施方案中,第一相是包含溶解在液体载体中的络合的金属杀生物剂的液相,而第二相包含包含金属杀生物剂,经常沉淀和/或胶体颗粒的颗粒。 策略和相关组合物,方法和处理是混合的,因为该策略包括异质(不溶性)和均相金属杀生物剂成分。 与异质策略不同,混合策略对粒度约束较不敏感,并且可能使用具有更大范围粒度的杀生物剂颗粒。 与均匀策略不同,混合策略对pH较不敏感,并且可以使用更宽范围的络合剂,包括弱碱性胺如三乙醇胺。