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    Preserved and stabilized natural latex, with water-soluble carboxylic acid salts
    2.
    发明授权
    Preserved and stabilized natural latex, with water-soluble carboxylic acid salts 失效
    保存和稳定的天然胶乳，与水溶性羧酸盐

    公开(公告)号：US5773499A

    公开(公告)日：1998-06-30

    申请号：US818707

    申请日：1997-03-14

    申请人： Henning Umland ,  Clara Petri

    发明人： Henning Umland ,  Clara Petri

    IPC分类号： C08K5/09 ,  C08C1/06 ,  C08K5/098 ,  C08L7/00

    CPC分类号： C08C1/06 ,  C08K5/098 ,  Y10S524/925 ,  Y10S524/926

    摘要： A natural rubber latex has been preserved and stabilized by at least one water-soluble carboxylic acid salt of the formula R--COO.sup.- M.sup.+, in which R is an alkyl or alkenyl radical having a branched carbon chain and M.sup.+ is a monovalent cation. A process for the preparation of the rubber latex mixture uses a water-soluble carboxylic acid salt for the preservation and stabilization of natural latex.

    摘要翻译： 通过至少一种式R-COO-M +的水溶性羧酸盐保护和稳定天然橡胶胶乳，其中R是具有支链碳链的烷基或烯基，M +是一价阳离子。 制备橡胶胶乳混合物的方法使用水溶性羧酸盐来保护和稳定天然胶乳。

    Silicone-containing elastomer and process for the preparation thereof
    4.
    发明授权
    Silicone-containing elastomer and process for the preparation thereof 失效
    含有硅酮的弹性体及其制备方法

    公开(公告)号：US4242287A

    公开(公告)日：1980-12-30

    申请号：US963085

    申请日：1978-11-22

    申请人： Dwight L. Allen

    发明人： Dwight L. Allen

    IPC分类号： A61L29/04 ,  C08K3/22 ,  C08K3/34 ,  C08L7/02 ,  C08L83/04 ,  C08K5/54

    CPC分类号： C08K3/22 ,  A61L29/049 ,  C08K3/346 ,  C08L7/02 ,  C08L83/04 ,  Y10S524/926

    摘要： A novel elastomeric composition of matter comprises a suitable elastomer, a masterbatch consisting of a silicone compound in an amount of from about 10 to about 50 parts by weight based upon the weight of the elastomer, titanium dioxide, and clay. A process for the preparation of a silicone-containing elastomeric composition of matter is provided and includes the steps of masterbatching a silicone compound, clay and titanium dioxide to form a dispersion, adding the dispersion to the elastomer and thereafter forming and curing a desired product therefrom. The composition is useful in the manufacture of rubber goods such as surgical and medical products which can be single or multi-layered.

    摘要翻译： 新型弹性体组合物包括合适的弹性体，由硅橡胶组成的母料，其量为弹性体重量的约10至约50重量份，二氧化钛和粘土。 提供了一种用于制备含硅酮弹性体组合物的方法，包括以下步骤：将硅氧烷化合物，粘土和二氧化钛进行母炼以形成分散体，将分散体加入到弹性体中，然后从其中形成和固化所需的产物 。 该组合物可用于制造可以是单层或多层的外科和医疗产品的橡胶制品。

    Coprecipitation process
    5.
    发明授权
    Coprecipitation process 失效
    共沉淀过程

    公开(公告)号：US4110240A

    公开(公告)日：1978-08-29

    申请号：US820557

    申请日：1977-07-29

    申请人： Thomas J. Leo ,  Anders H. Johansson

    发明人： Thomas J. Leo ,  Anders H. Johansson

    IPC分类号： C08J3/16 ,  C08C1/14 ,  C08J3/21 ,  C08J3/22 ,  C08J3/20

    CPC分类号： C08J3/21 ,  C08C1/14 ,  C08J3/226 ,  Y10S524/926

    摘要： Products of a coprecipitation process comprising (i) substantially clear serum and (ii) homogeneous, essentially non-tacky, dustless, friable particles of predispersed rubber or plastic compounding chemical which comprise from about 80 to about 99.5 percent by weight of said chemical and from about 0.5 to about 20 percent by weight of a film-forming binder comprising a rubber or plastic polymer, wherein substantially all of the particles of the compounding chemical are at least 0.05 micron in size and no compounding chemical used is a reinforcing agent or diluent for rubber or plastic stock, are formed associatively.

    摘要翻译： 共沉淀方法的产品包括（i）基本上清除血清和（ii）预分散的橡胶或塑料复合化学品的均匀的，基本上非粘性的，无粉尘，易碎的颗粒，其包含所述化学品的约80-约99.5重量％ 约0.5至约20重量％的包含橡胶或塑料聚合物的成膜粘合剂，其中配混化学品的基本上所有的颗粒的尺寸至少为0.05微米，并且不使用复合化学品是用于 橡胶或塑料原料。