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    • 43. 发明授权
    • Controlled release urea-based products
    • 控释尿素基产品
    • US06391454B1
    • 2002-05-21
    • US09527374
    • 2000-03-16
    • Lijun MaoXiaoming YangRobert J. Petcavich
    • Lijun MaoXiaoming YangRobert J. Petcavich
    • A01N2526
    • C05C9/02Y10T428/2998C05G3/0029
    • Controlled release urea-based feed supplements for ruminant animals and controlled release urea-based plant nutrients are comprised of particles or granules comprised in whole or in principal part of urea or having urea at or on the exterior surfaces thereof, and a moisture resistant interpenetrating polymer network coating on the particles comprised of the reaction products of urea and a polyisocyanate, and the reaction products of polyisocyanate, an alkyd resin having at least one double bond in each repeat unit and an oil having at least one double bond, the double bonds being reactive with one another and with themselves. The coated plant nutrients have a substantially linear rate of release of nutrients to the soil over a controlled period of time, e.g., 30 to 120 days. The coated ruminant feed supplements have a substantially linear rate of NPN release in the rumen over a controlled period of time, e.g., 12 to 24 hours. The ratio of nutrients to control agents is high, controlled release is achieved at minimal expense, and the products are economical to use.
    • 用于反刍动物和基于控制释放的脲基植物营养素的控释尿素饲料添加剂包含在尿素的整体或主要部分中或在其外表面上或其外表面上具有尿素的颗粒或颗粒,以及防潮互穿聚合物 在由尿素和多异氰酸酯的反应产物组成的颗粒上的网络涂层,以及多异氰酸酯,在每个重复单元中具有至少一个双键的醇酸树脂和具有至少一个双键的油的反应产物,双键为 彼此反应并与自己互动。 涂覆的植物营养物质在受控的时间段(例如30至120天)内具有基本上线性的营养物向土壤释放的速率。 涂覆的反刍动物饲料添加剂在受控的时间段(例如12至24小时)内在瘤胃中具有基本线性的NPN释放速率。 营养素与控制剂的比例很高,以最小的成本实现了控释,产品经济实用。
    • 44. 发明授权
    • Process for preserving fresh produce
    • 保鲜产品的过程
    • US06203833B1
    • 2001-03-20
    • US09505236
    • 2000-02-16
    • Li YangXiaoming YangRobert J. PetcavichLijun Mao
    • Li YangXiaoming YangRobert J. PetcavichLijun Mao
    • A23B7153
    • A23B7/154A23B7/16
    • Fresh produce is preserved by coating the exterior surface of the produce with a coating composition comprising an aqueous solution of from about 0.5 to about 4 percent by weight of a cellulose derivative, preferably sodium carboxymethylcellulose, from about 0.05 to about 0.5 percent by weight of konjac, and from about 0.03 to about 0.1 percent by weight of surfactant, preferably dioctyl sodium sulfosuccinate. Optional constituents include antimicrobials, plasticizers and antifoaming agents. The coating composition is effective to control respiratory exchange, i.e., the passage of gases, particularly oxygen, ethylene, carbon dioxide and water vapor, into and out of the produce, thereby to control maturation and ripening of the produce.
    • 通过用包含约0.5至约4重量%的纤维素衍生物,优选羧甲基纤维素钠,约0.05至约0.5重量%魔芋的水溶液的涂料组合物涂覆产品的外表面来保存新鲜产品 ,和约0.03至约0.1重量%的表面活性剂,优选二辛基磺基琥珀酸钠。 任选成分包括抗微生物剂,增塑剂和消泡剂。 涂料组合物有效地控制呼吸交换,即气体,特别是氧气,乙烯,二氧化碳和水蒸气进入和离开产物,从而控制产品的成熟和成熟。
    • 45. 发明授权
    • Controlled release plant nutrients
    • 控制释放植物营养
    • US5803946A
    • 1998-09-08
    • US666226
    • 1996-06-20
    • Robert J. PetcavichXiaoming Yang
    • Robert J. PetcavichXiaoming Yang
    • C05C9/00C05G3/00C05G5/00
    • C05G3/0029C05C9/005
    • Plant nutrients that are released in soil over a controlled period of time are comprised of plant nutrient particles containing urea and on the surface of the particles a water insoluble, biodegradable, interpenetrating polymer network comprised of a biuret, a urethane and tung oil; more specifically, an interpenetrating network comprised of the reaction product of the urea and an isocynate reactive with urea, the reaction product of the isocyanate and an alcohol reactive with isocyanate to form a urethane, and the reaction product of the urethane and tung oil. A method of making the controlled release plant nutrient conveniently and economically is also disclosed.
    • 在受控制的时间段内释放在土壤中的植物营养物质包含含有尿素的植物营养颗粒,颗粒表面上由水合不溶性,可生物降解的互穿聚合物网络组成,包括缩二脲,氨基甲酸酯和桐油; 更具体地说,是由脲和与尿素反应的异氰酸酯的反应产物,异氰酸酯的反应产物和与异氰酸酯反应形成氨基甲酸酯的反应产物和氨基甲酸酯和桐油的反应产物组成的互穿网络。 还公开了方便和经济地制备控释植物营养物质的方法。