Microencapsulated agricultural chemical and process of preparation
thereof
    1.
    发明授权
    Microencapsulated agricultural chemical and process of preparation thereof 失效
    微胶囊农药及其制备方法

    公开(公告)号:US4557755A

    公开(公告)日:1985-12-10

    申请号:US401241

    申请日:1982-07-23

    摘要: A microencapsulated agricultural chemical comprises an agricultural chemical as an active ingredient having a solubility of not more than 1 g in 100 ml of water at 20.degree. C. and vapor pressure of not more than 760 mmHg at 60.degree. C. and a microcapsule wall enclosing the agricultural chemical therein and the microcapsule wall comprises a water-soluble cationic urea resin and at least one of prepolymer composed of formaldehyde and at least one compound selected from the group consisting of urea, melamine and thiourea. The microcapsule is prepared by dispersing the agricultural chemical in an aqueous medium containing the water-soluble cationic urea resin, an anionic surfactant and at least one of the prepolymer and maintaining pH of the obtained dispersion within an acidic range to polycondense the water-soluble cationic urea resin and at least one of the prepolymers.

    摘要翻译: 微囊化农药包括作为活性成分的农药,其在20℃下在100ml水中的溶解度不超过1g,并且在60℃下蒸气压不大于760mmHg,并且将包封的微胶囊壁 其中的农药和微胶囊壁包含水溶性阳离子脲树脂和由甲醛和至少一种选自脲,三聚氰胺和硫脲的化合物组成的预聚物中的至少一种。 微胶囊通过将农药分散在含有水溶性阳离子脲树脂,阴离子表面活性剂和至少一种预聚物的水性介质中,并将所得分散体的pH保持在酸性范围内以将水溶性阳离子 脲树脂和至少一种预聚物。

    Process for the microcapsulation of organophosphoric acid
derivative-containing agricultural chemicals
    2.
    发明授权
    Process for the microcapsulation of organophosphoric acid derivative-containing agricultural chemicals 失效
    含有机磷酸衍生物农药的微胶囊化方法

    公开(公告)号:US4217241A

    公开(公告)日:1980-08-12

    申请号:US893822

    申请日:1978-04-05

    摘要: The invention relates to a process for the preparation of microcapsules of organo-phosphoric acid derivative as capsule core. The derivative has a partial mutual solubility with water. The main feature of the invention is the provision of an inner provisional solid capsule shell of a high molecular hydrophobic substance, such as polymethyl methacrylate. This substance is liable to form a shell on each of the droplets by sedimenting under aqueous condition, while it is capable of dissolving into the capsule core substance, when subject to non-aqueous condition which is established after formation of a permanent outer shell on the provisional shell of each capsule. The provisional shell-forming substance is polymethyl methacrylate, polystyrene, polyvinyl chloride or polyvinyl acetate.

    摘要翻译: 本发明涉及一种制备作为胶囊核心的有机磷酸衍生物的微胶囊的方法。 该衍生物与水具有部分互溶性。 本发明的主要特征是提供高分子疏水性物质如聚甲基丙烯酸甲酯的内部临时固体胶囊壳。 该物质易于在水溶液状态下沉降,同时能够溶解在胶囊核心物质中,当经受在形成永久性外壳之后建立的非水性条件时,在每个液滴上形成壳 每个胶囊的临时壳。 临时成壳物质是聚甲基丙烯酸甲酯,聚苯乙烯,聚氯乙烯或聚乙酸乙烯酯。

    Pressure-sensitive recording paper
    4.
    发明授权
    Pressure-sensitive recording paper 失效
    压敏记录纸

    公开(公告)号:US4383706A

    公开(公告)日:1983-05-17

    申请号:US328737

    申请日:1981-12-08

    IPC分类号: B41M5/165 B41M5/16 B41M5/22

    CPC分类号: B41M5/1655 Y10S428/914

    摘要: A pressure-sensitive recording paper exhibiting excellent properties even under severe environmental conditions such as high temperature and high humidity or low temperature is offered, the pressure-sensitive recording paper comprising a paper sheet coated with microcapsules containing therein a solution of a color former in 1-isopropylphenyl-2-phenylethane as a solvent.

    摘要翻译: 提供即使在诸如高温和高湿度或低温的恶劣环境条件下表现出优异性能的压敏记录纸,该压敏记录纸包括涂有微胶囊的纸片,其中含有成色剂1 - 异丙基苯基-2-苯基乙烷作为溶剂。

    Pressure-sensitive recording material
    5.
    发明授权
    Pressure-sensitive recording material 失效
    压敏记录材料

    公开(公告)号:US4383705A

    公开(公告)日:1983-05-17

    申请号:US249086

    申请日:1981-03-30

    IPC分类号: B41M5/165 B41M5/16 B41M5/22

    CPC分类号: B41M5/1655 Y10T428/2984

    摘要: There are provided a solvent for pressure-sensitive recording material, which comprises a mixture of 1-isopropylphenyl-2-phenylethane with diisopropylnaphthalene and/or partially hydrogenated terphenyl, and a pressure-sensitive recording material, a sheet of which is coated with microcapsules containing therein the solvent, showing a sufficient rate of color development and an acceptable color density under severe environmental conditions such as very cold conditions as well as hot and humid conditions.

    摘要翻译: 提供了一种用于压敏记录材料的溶剂,其包含1-异丙基苯基-2-苯基乙烷与二异丙基萘和/或部分氢化的三联苯的混合物和压敏记录材料,其片材包含含有 其中溶剂,在恶劣的环境条件下,例如非常冷的条件以及热和潮湿的条件下显示足够的显色速率和可接受的颜色密度。

    Partially pressure-sensitive recording paper
    9.
    发明授权
    Partially pressure-sensitive recording paper 失效
    部分压敏记录纸

    公开(公告)号:US4640847A

    公开(公告)日:1987-02-03

    申请号:US690523

    申请日:1985-01-11

    CPC分类号: B41M5/132

    摘要: Disclosed herein is a process for producing a partially pressure-sensitive recording paper comprising dispersing microcapsules containing a solution of color-former, into a thermally melting suspension medium selected from the group consisting of Japan tallow (haze wax), Carnauba wax, Montan wax, paraffin wax, microcrystalline wax, polyethylene wax, oxidized wax and the mixtures thereof, thereby obtaining an ink comprising the microcapsules and the thermally melting suspension medium, and painting the thus obtained ink on a specified part of a surface of a sheet of paper.

    摘要翻译: 本文公开了一种制备部分压敏记录纸的方法,包括将含有成色剂溶液的微胶囊分散到选自日本牛油(霾蜡),巴西棕榈蜡,蒙山蜡, 石蜡,微晶蜡,聚乙烯蜡,氧化蜡及其混合物,从而获得包含微胶囊和热熔悬浮介质的油墨,并将如此获得的油墨喷涂在一张纸的表面的特定部分上。