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    Process for preparing an aqueous emulsion with narrow droplet size distribution, the use of such an emulsion for preparing a polymer dispersion, and the recovery of polymer particles from such a dispersion
    1.
    发明授权
    Process for preparing an aqueous emulsion with narrow droplet size distribution, the use of such an emulsion for preparing a polymer dispersion, and the recovery of polymer particles from such a dispersion 失效
    制备具有窄液滴尺寸分布的水乳液的方法，使用这种乳液制备聚合物分散体，以及从这种分散体中回收聚合物颗粒

    公开(公告)号：US06160061A

    公开(公告)日：2000-12-12

    申请号：US230034

    申请日：1999-03-04

    申请人： Arvid Berge ,  Kari-Anne Leth-Olsen ,  John Ugelstad deceased ,  Anne Dalager Dyrli ,  Steinar Pedersen

    发明人： Arvid Berge ,  Kari-Anne Leth-Olsen ,  John Ugelstad deceased ,  Anne Dalager Dyrli ,  Steinar Pedersen

    IPC分类号： C08J3/03 ,  C08F2/00 ,  C08F2/22

    CPC分类号： C08F2/22

    摘要： A process for preparing an aqueous emulsion with a narrow droplet size distribution of an oily material comprising one or more highly water insoluble substances, wherein the oily material is homogenized in a hydrophilic phase in which the oily material is more soluble than in water, but still so insoluble that an emulsion is formed by the homogenization, and the emulsion is subsequently diluted with a high proportion of water to form a stable emulsion of the oily material having the desired narrow size distribution. The stable emulsion may be mixed with an excess of a partly water soluble material which becomes absorbed by the droplets of the oily material. Said partly water soluble material may comprise a polymerizable monomer, and polymerization is subsequently effected to prepare a dispersion of polymer particles, and if desired, the polymer particles are recovered from said dispersion.

    摘要翻译： PCT No.PCT / NO97 / 00182 Sec。 371 1999年3月4日第 102（e）1999年3月4日PCT PCT 1997年7月16日PCT公布。 第WO98 / 03555号公报 日本1998年1月29日一种制备含有一种或多种高度水不溶性物质的油性物质的窄液滴尺寸分布的水性乳液的方法，其中油性物质在油性物质比其溶解性更高的亲水相中均化 但仍然如此不溶，使得通过均化形成乳液，然后用高比例的水稀释乳液以形成具有所需窄尺寸分布的油性材料的稳定乳液。 稳定的乳液可以与过量的部分水溶性物质混合，这些物质被油性物质的液滴吸收。 所述部分水溶性材料可以包含可聚合单体，随后进行聚合以制备聚合物颗粒的分散体，如果需要，从所述分散体中回收聚合物颗粒。

    Two-stage seed swelling procedure for producing monodisperse PVC particles
    2.
    发明授权
    Two-stage seed swelling procedure for producing monodisperse PVC particles 失效
    用于生产单分散PVC颗粒的两阶段种子溶胀程序

    公开(公告)号：US06228925B1

    公开(公告)日：2001-05-08

    申请号：US09171672

    申请日：1999-02-09

    申请人： Steinar Pedersen ,  Arvid Berge ,  Harald Jacobsen ,  Kari-Anne Leth-Olsen ,  Bård Sæthre ,  John Ugelstad

    发明人： Steinar Pedersen ,  Arvid Berge ,  Harald Jacobsen ,  Kari-Anne Leth-Olsen ,  Bård Sæthre ,  John Ugelstad

    IPC分类号： C08F1406

    CPC分类号： C08F14/06 ,  C08F285/00 ,  Y10S526/909 ,  C08F2/20 ,  C08F214/06

    摘要： A procedure for the production of PVC particles with a narrow size distribution in the range 10-50 &mgr;m, preferably 10-30 &mgr;m, in which, in a first stage, a vinyl monomer or a mixture of monomers is polymerised to form a polymer/oligomer seed particle in the range 1-10 &mgr;m. In a second stage, another vinyl monomer or mixture of monomers is swelled into the polymer/oligomer seed particles and polymerisation takes place in such a way that they grow into polymer particles of the desired size. It is preferable to use aromatic vinyl monomers or acrylates as the monomer in the seed particles. The seed particles in the first stage can be produced in a two-stage swelling process or by dispersion polymerisation.

    摘要翻译： 制备具有10-50μm，优选10-30μm的窄尺寸分布的PVC颗粒的方法，其中在第一阶段中乙烯基单体或单体混合物聚合形成聚合物/ 寡聚种子颗粒在1-10毫米范围内。 在第二阶段中，另一种乙烯基单体或单体混合物溶胀到聚合物/低聚物种子颗粒中，聚合以这样的方式进行，使得它们生长成所需尺寸的聚合物颗粒。 优选在种子颗粒中使用芳族乙烯基单体或丙烯酸酯作为单体。 第一阶段中的种子颗粒可以在两阶段溶胀过程中或通过分散聚合制备。