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    • 2. 发明授权
    • Coated granular fertilizer and method for producing same
    • 涂层颗粒肥料及其制备方法
    • US06322606B1
    • 2001-11-27
    • US09665123
    • 2000-09-20
    • Haruhiko KomoriyaKazuhiko MaedaMasayuki ShiotaYoshi HirashimaKentaro TsutsumiMikio OotaniYukio Ikeda
    • Haruhiko KomoriyaKazuhiko MaedaMasayuki ShiotaYoshi HirashimaKentaro TsutsumiMikio OotaniYukio Ikeda
    • C05G500
    • C08G18/36C05G3/0029C08G18/5021C08G18/8051
    • The invention relates to a coated granular fertilizer having a film covering fertilizer granules. This film comprises a polyurethane resin prepared by a method comprising the steps of (a) reacting an aromatic polyisocyanate with a first polyol component (i.e., castor oil or a castor oil derivative), thereby to obtain a prepolymer having terminal isocyanate groups in the molecule; and (b) reacting the prepolymer with a second polyol component (i.e., castor oil or a castor oil derivative) and a third polyol component which is an amine having at least two hydroxyl groups in the molecule, thereby to cure the prepolymer and thus to prepare the polyurethane resin. The invention relates to another coated granular fertilizer having a film covering fertilizer granules. This film comprises a urethane resin and aqueous-fluid-absorbing particles having a particle diameter of from 1 to 200 &mgr;m. This urethane resin may be the above polyurethane resin. This coated granular fertilizer can be produced by a method comprising the steps of (a) applying an aromatic polyisocyanate, a polyol component (i.e., castor oil or a castor oil derivative), an amine, and the aqueous-fluid-absorbing particles, at the same time or separately in no special order, while the fertilizer granules are kept fluidized or rolled, thereby to form a precursory film on the fertilizer granules; and (b) curing the precursory film into the film. Each coated granular fertilizer is substantially superior in regulation of the release of plant nutrient elements therefrom.
    • 本发明涉及具有覆盖肥料颗粒的薄膜的涂覆颗粒肥料。 该膜包括通过包括以下步骤的方法制备的聚氨酯树脂:(a)使芳族多异氰酸酯与第一多元醇组分(即蓖麻油或蓖麻油衍生物)反应,由此得到分子中具有末端异氰酸酯基团的预聚物 ; 和(b)使预聚物与第二多元醇组分(即蓖麻油或蓖麻油衍生物)和第三多元醇组分反应,所述第三多元醇组分是分子中具有至少两个羟基的胺,从而固化预聚物,从而使 制备聚氨酯树脂。 本发明涉及具有覆盖肥料颗粒的膜的另一种涂覆颗粒肥料。 该膜包含聚氨酯树脂和粒径为1〜200μm的水溶液吸收性粒子。 该聚氨酯树脂可以是上述聚氨酯树脂。 该涂覆的颗粒肥料可以通过以下方法制备:(a)将芳族多异氰酸酯,多元醇组分(即蓖麻油或蓖麻油衍生物),胺和水性流体吸收颗粒施用于 同时或以特殊顺序分开,同时将肥料颗粒保持流化或滚动,从而在肥料颗粒上形成前体膜; 和(b)将前体膜固化成膜。 每个涂覆的颗粒肥料在调节植物营养元素的释放方面基本上都是优异的。
    • 5. 发明授权
    • Fluorine-containing copolymer useful as paint vehicle
    • 含氟共聚物可用作涂料载体
    • US4985519A
    • 1991-01-15
    • US406093
    • 1989-09-12
    • Toshio KoishiMikio OotaniSeichi KatsuragawaHideaki Sueta
    • Toshio KoishiMikio OotaniSeichi KatsuragawaHideaki Sueta
    • C08F214/18C08F218/04
    • C08F214/188C08F218/04
    • The invention provides a novel copolymer comprising 25-75 mol % of a fluoroolefin such as CTFE, 10-80 mol % of a combination of a fatty acid vinyl ester having not more than 4 carbon atoms in the acid part and at least one other carboxylic acid vinyl ester which has a larger number of carbon atoms and is selected from aliphatic and aromatic carboxylic acid vinyl esters, 3-40 mol % of a hydroxyl-containing allyl ether such as ethylene glycol monoallyl ether and 0-20 mol % of a carboxyl-containing monomer such as vinylacetic acid. The copolymer has a number average molecular weight of 3000 to 10000. This copolymer possesses favorable properties characteristic of fluororesins, is soluble in organic solvents including aromatic solvents low in polarity, such as xylene, and is curable at relatively low temperatures. A solution of this copolymer is useful as a liquid vehicle of a paint. Optionally, a portion of the vinyl ester component of the copolymer is replaced by an alkyl vinyl ether to enhance pliability of paint films using the copolymer.
    • 本发明提供了一种新型共聚物,其包含25-75mol%的氟烯烃如CTFE,10-80mol%在酸部分中具有不超过4个碳原子的脂肪酸乙烯酯的组合和至少一种其它羧酸 酸性乙烯基酯,其具有较大数量的碳原子,并且选自脂族和芳族羧酸乙烯基酯,3-40摩尔%的含羟基的烯丙基醚如乙二醇单烯丙基醚和0-20摩尔%的羧基 乙烯基乙酸等单体。 共聚物的数均分子量为3000〜10000。该共聚物具有氟树脂的有利特性,可溶于包括极性低的芳族溶剂在二甲苯等有机溶剂中,可在较低温度下固化。 该共聚物的溶液可用作涂料的液体载体。 任选地,一部分共聚物的乙烯基酯组分被烷基乙烯基醚代替以增强使用该共聚物的漆膜的柔韧性。