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    • 3. 发明申请
    • NATURAL OIL BASED POLY-URETHANE DISPERSION
    • 天然油基聚氨酯分散剂
    • US20130338307A1
    • 2013-12-19
    • US14001205
    • 2011-04-27
    • Puja JainSandeep Jain
    • Puja JainSandeep Jain
    • C09J175/04C08L75/04
    • C08L75/04C08G18/0823C08G18/12C08G18/36C08G2230/00C09J175/04C08G18/3228
    • This invention relates to a natural oil based poly-urethane dispersion of water-based anionic polyurethane/urea polymer of high molecular weight by forming a water dispersible NCO-terminated polyurethane pre-polymer, consisting essentially of the reaction product of a polyol component and a polyisocyanate component, at a reduced temperature, which is then dispersed in solvent-free water after applying a neutralizing agent, and then reacted with a chain extender. The polyol component used in this invention comprises of a mixture of (a) ricinoleated natural ester based mono blocked polyol; and (c) carboxylic group-containing polyols. The polyisocyanate component used is an aromatic diisocyanate such as an isomer of toluene diicocyanate and/or methylene diphenyl diisocyanate. The dispersion produced as a result of the process described herein is biodegradable in nature and non-plastic. The dispersion is also free of volatile organic chemicals and/or leachable contaminants. On account of the superior characteristics of the dispersion produced in this invention, it can be widely applied in industry for, among others, direct food contact applications.
    • 本发明涉及通过形成水分散性NCO封端的聚氨酯预聚物的基于高分子量的水性阴离子聚氨酯/脲聚合物的天然油基聚氨酯分散体,其基本上由多元醇组分和 多异氰酸酯组分,在降低的温度下,然后在施加中和剂后分散在无溶剂水中,然后与扩链剂反应。 本发明中使用的多元醇组分包含(a)蓖麻油酸酯天然酯基单嵌段多元醇的混合物; 和(c)含羧基的多元醇。 使用的多异氰酸酯组分是芳族二异氰酸酯,例如甲苯二异氰酸酯和/或亚甲基二苯基二异氰酸酯的异构体。 作为本文所述方法的结果产生的分散体在本质上是可生物降解的,并且是非塑性的。 分散体也不含挥发性有机化学物质和/或可浸出的污染物。 由于本发明生产的分散体的优越特性,其可以广泛应用于工业中,其中包括直接食品接触应用。