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    Porous inking members for impact printers and methods of making the same
    213.
    发明授权
    Porous inking members for impact printers and methods of making the same 失效
    用于冲击打印机的多孔上墨构件及其制造方法

    公开(公告)号：US5970595A

    公开(公告)日：1999-10-26

    申请号：US504100

    申请日：1995-07-19

    Applicant: Yaoping Tan

    Inventor： Yaoping Tan

    IPC: C08J9/26 ,  B21D39/03

    CPC classification number: C08J9/26 ,  C08J2201/0444 ,  C08J2315/00 ,  Y10T29/49826 ,  Y10T29/49982

    Abstract: Porous inking members for impact printers and methods of making the same which control the ink transfer flow rate from the porous inking members to dot matrix or other impact print heads. One preferred embodiment of the porous inking members for impact printers and methods of making the same uses peptizer and liquid nitrile rubber as ingredients in the manufacturing process to produce porous inking members.

    Abstract translation: 用于冲击打印机的多孔上墨构件及其制造方法，其控制从多孔上墨构件到点阵或其它冲击打印头的墨转移流量。 用于冲击式打印机的多孔上色构件的一个优选实施例及其制造方法使用胶溶剂和液体丁腈橡胶作为制造过程中的成分以制备多孔上色构件。

    Controlled release of trace nutrients
    216.
    发明授权
    Controlled release of trace nutrients 失效
    微量营养素的控制释放

    公开(公告)号：US4299613A

    公开(公告)日：1981-11-10

    申请号：US51102

    申请日：1979-06-22

    Applicant: Nathan F. Cardarelli

    Inventor： Nathan F. Cardarelli

    IPC: A01M1/20 ,  A01N25/10 ,  A01N25/34 ,  A01N47/22 ,  A01N55/04 ,  A01N57/10 ,  C02F1/50 ,  C02F1/68 ,  C05D9/02 ,  C05G3/00 ,  C08J9/26 ,  A01N25/00

    CPC classification number: C08J9/26 ,  A01M1/2055 ,  A01N25/10 ,  A01N25/34 ,  A01N47/22 ,  A01N55/04 ,  A01N57/10 ,  C05D9/02 ,  C05G3/0047 ,  C02F1/50 ,  C02F1/685 ,  C08J2201/0444 ,  C08J2323/02 ,  Y10S47/10

    Abstract: Compositions of and a method for preparing polymeric formulations that gradually, continuously and uniformly release various compounds over a long period of time in ionic form that are well recognized as essential to the growth of agricultural commodities. The compounds, such as inorganic salts of varying water solubilities, are monolithically incorporated in a thermoplastic polymeric matrix usually of two thermoplastic polymers, for example, a copolymer of poly(ethylene-vinyl acetate) or a copolymer of ethylene and propylene. Release is generally conditioned upon the presence of moisture and is proportional to the moisture content of soil treated with the subject invention. Release rate is tailored to a given desirable condition by regulation of the free volume and/or porosity within the polymer matrix and through dispenser geometry. Free volume is maintained at the level conducive to agent release such as through the use of free volume modifying secondary thermoplastic additives such as low density polyethylene; and porosity is controlled through the use of porosity enhancing agents appropriately termed porosigens. Said porosigens can be the low or moderate soluble salts such as the carbonates, bicarbonates, sulfates, phosphates, nitrates, etc.; of the alkali metals, the alkaline earths, or ammonium. Upon exposure to moisture, water ingress into the dispensing pellet removes said porosigen through dissolution processes thus creating a porous network permitting water contact with the incorporated nutrient molecules and their gradual egress in said water over a period of time such as for about a couple months to four years, or longer.

    Abstract translation: 制备聚合物制剂的组合物和方法，其逐渐，连续和均匀地以离子形式长期释放各种化合物，其被公认为农业商品生长所必需的。 化合物，例如具有不同水溶性的无机盐，被整体并入通常由两种热塑性聚合物的热塑性聚合物基质，例如聚（乙烯 - 乙酸乙烯酯）或乙烯和丙烯的共聚物的共聚物。 释放通常根据水分的存在而调节，并且与本发明处理的土壤的含水量成比例。 通过调节聚合物基质内的自由体积和/或孔隙率并通过分配器几何形状，释放速率适合于给定的期望条件。 自由体积维持在有助于药剂释放的水平，例如通过使用自由体积改性的次级热塑性添加剂如低密度聚乙烯; 并且通过使用适当地称为致孔重量的孔隙率增强剂来控制孔隙度。 所述致孔剂可以是低或中等的可溶性盐，例如碳酸盐，碳酸氢盐，硫酸盐，磷酸盐，硝酸盐等; 的碱金属，碱土金属或铵。 在暴露于水分时，进入分配颗粒的水通过溶解过程除去所述porosigen，从而产生多孔网络，允许水与所掺入的营养分子水接触，并且在所述水中逐渐流出一段时间，例如约几个月至 四年以上。

    Process for preparing open-cell sponge rubber printing material having small and large interconnected cells
    217.
    发明授权
    Process for preparing open-cell sponge rubber printing material having small and large interconnected cells 失效
    具有小型和大型互连电池的开孔海绵橡胶印刷材料的制备方法

    公开(公告)号：US4212839A

    公开(公告)日：1980-07-15

    申请号：US850452

    申请日：1977-11-10

    Applicant: Takaji Funahashi

    Inventor： Takaji Funahashi

    IPC: B41K1/34 ,  B41N1/12 ,  C08J9/26 ,  B29D27/00

    CPC classification number: C08J9/26 ,  B41K1/34 ,  B41N1/12 ,  C08J2201/0444 ,  C08J2201/046 ,  C08J2321/00

    Abstract: A printing material composed of an open-cell sponge rubber capable of including therein a colored ink, which does not necessitate a stamp pad for the stamping operation, is disclosed. This printing material is prepared by adding appropriate amounts of soluble starch and a fine powder of an easily water-soluble salt which does not decompose or gasify at a curing temperature to a mixture of a starting rubber, a curing agent and a filler, kneading and milling the mixture, introducing the mixture into a mold, heating the mixture to effect curing, removing said starch and salt by washing, and drying the resulting product.

    Abstract translation: 公开了一种由能够在其中包含彩色墨水的开孔海绵橡胶组成的印刷材料，其不需要用于冲压操作的印模。 该印刷材料通过将适量的可溶性淀粉和易于水溶性盐的细粉末在固化温度下分解或气化以制备成起始橡胶，固化剂和填料的混合物，捏合和 研磨混合物，将混合物引入模具中，加热混合物以进行固化，通过洗涤除去所述淀粉和盐，并干燥所得产物。

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