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    Base-triggered release microcapsules
    2.
    发明授权
    Base-triggered release microcapsules 有权
    碱触发释放微胶囊

    公开(公告)号：US06544540B2

    公开(公告)日：2003-04-08

    申请号：US09363324

    申请日：1999-07-28

    申请人： Juanita Elena Van Koppenhagen ,  Herbert Benson Scher ,  Kuo-Shin Lee ,  Ian Malcolm Shirley ,  Philip Wade ,  Richard Follows

    发明人： Juanita Elena Van Koppenhagen ,  Herbert Benson Scher ,  Kuo-Shin Lee ,  Ian Malcolm Shirley ,  Philip Wade ,  Richard Follows

    IPC分类号： A01N2528

    CPC分类号： A01N47/12 ,  A01N25/28 ,  A01N53/00 ,  A01N57/16 ,  Y10S424/08 ,  Y10T428/2985 ,  A01N2300/00

    摘要： Microcapsules formed from an aminoplast shell wall and an encapsulated ingredient or ingredients enclosed within the wall in which the wall contains a base-cleavable ester moiety. These capsules have been found to be sensitive to the presence of base such that in the presence of base, the capsule walls are relatively quickly disintegrated or degraded so as to produce a relatively quick release of the encapsulated materials. Microcapsules of this invention are particularly suitable for use in controlling insects having an alkaline gut such as certain lepidoptera in that the capsule shell wall may be designed so as to quickly disintegrate under the alkaline conditions present in the gut of the insect thus providing a microcapsule which is safe to handle but which is selectively effective against certain undesirable insects while not harmful to beneficial insects or insects which do not feed on the capsule materials.

    摘要翻译： 由氨基塑料壳壁形成的微胶囊和包封在壁内的封装成分或成分，其中壁含有可裂解的基团部分。这些胶囊已被发现对碱的存在敏感，因此在碱的存在下， 胶囊壁相对快速地分解或降解，以便产生相对快速的包封材料的释放。本发明的微胶囊特别适合用于控制具有碱性肠的某些鳞翅目的昆虫，因为胶囊壳壁可以是 设计成在昆虫肠内存在的碱性条件下快速崩解，从而提供安全处理的微胶囊，但是对于某些不需要的昆虫是选择性有效的，而对有益昆虫或不在胶囊上的昆虫不会有害 材料

    Acid-triggered release microcapsules
    4.
    发明授权
    Acid-triggered release microcapsules 有权
    酸触发释放微胶囊

    公开(公告)号：US06337130B1

    公开(公告)日：2002-01-08

    申请号：US09363571

    申请日：1999-07-29

    申请人： Juanita Elena Van Koppenhagen ,  Herbert Benson Scher ,  Kuo-Shin Lee ,  Ian Malcolm Shirley ,  Philip Wade ,  Richard Follows

    发明人： Juanita Elena Van Koppenhagen ,  Herbert Benson Scher ,  Kuo-Shin Lee ,  Ian Malcolm Shirley ,  Philip Wade ,  Richard Follows

    IPC分类号： B32B1502

    CPC分类号： B01J13/16 ,  A01N25/28 ,  C08G18/006 ,  C08G2310/00 ,  Y10T428/2985 ,  Y10T428/2989

    摘要： Microcapsules of a microcapsule formed of a polyurea shell wall and an encapsulated ingredient or ingredients enclosed within the wall, the wall comprising at least one oligomeric acetal having the moiety in which R is (a) a moiety containing a chain of from 5 to about 40 optionally substituted carbon atoms, (b) a moiety containing a chain of from 4 to about 40 carbon atoms and one or more internally linked oxygen or sulfur atoms or —NH-groups, or (c) an optionally substituted ethylene or propylene moiety Z is (a) an optionally substituted phenyl group, (b) an optionally substituted C1-C20 alkyl, C2-C20 alkenyl, C3-C8 cycloalkyl or C5-C8 cycloalkenyl group, or (c) benzoyl, and n is 1 if R is (a) or (b), or is 2-20 if R is (c). The microcapsules are acid-sensitive and the capsule walls are relatively readily degraded or disintegrated by contacting the microcapsules with an acidic substance, preferably an organic or inorganic acid whereby the encapsulated ingredient or ingredients are released into the surrounding environment. The invention is particularly suitable for encapsulation of biologically active substances and agrochemicals, and most preferably pesticides for foliar treatment.

    摘要翻译： 由聚脲壳壁和包封的成分或包封在壁内的成分形成的微胶囊的微胶囊，所述壁包含至少一个具有部分的低聚缩醛，其中R是（a）含有约5至约40个链的部分，任选地 取代的碳原子，（b）含有4至约40个碳原子的链和一个或多个内部连接的氧或硫原子或-NH-基团的部分，或（c）任选取代的乙烯或丙烯部分Z是（ a）任选取代的苯基，（b）任选取代的C 1 -C 20烷基，C 2 -C 20烯基，C 3 -C 8环烷基或C 5 -C 8环烯基，或（c）苯甲酰基，如果R是（a ）或（b），或如果R是（c），则为2-20。 微胶囊是酸敏感的，并且胶囊壁通过使微胶囊与酸性物质（优选有机或无机酸）接触而相对容易地降解或分解，从而将包封的成分或成分释放到周围环境中。 本发明特别适用于生物活性物质和农用化学品的包封，最优选用于叶面处理的农药。