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105 条记录 (耗时 0.032 秒)

    PROCESS FOR PRODUCING ULTRAFINE POWDERS BASED ON POLYAMIDES, ULTRAFINE POLYAMIDE POWDERS AND THEIR USE
    12.
    发明申请
    PROCESS FOR PRODUCING ULTRAFINE POWDERS BASED ON POLYAMIDES, ULTRAFINE POLYAMIDE POWDERS AND THEIR USE 审中-公开
    基于聚氨酯，超级聚酰胺粉及其使用生产超细粉的方法

    公开(公告)号：US20120264877A1

    公开(公告)日：2012-10-18

    申请号：US13494082

    申请日：2012-06-12

    申请人： Harald Häger ,  Franz-Erich Baumann ,  Wolfgang Lortz ,  Christoph Batz-Sohn

    发明人： Harald Häger ,  Franz-Erich Baumann ,  Wolfgang Lortz ,  Christoph Batz-Sohn

    IPC分类号： C08L77/00 ,  B29C47/00 ,  B29C45/00 ,  C09D177/00 ,  B29C49/00

    CPC分类号： C08J3/12 ,  C08J3/128 ,  C08J3/14 ,  C08J2377/00 ,  C09D177/00 ,  Y10S524/904

    摘要： Process for preparing ultrafine powders based on polyamides by contacting polyamides having a relative solution viscosity ηrel in the range from 1.5 to 2.0, measured in 0.5% m-cresol solution at 25° C., with an alcoholic medium in the presence of inorganic particles suspended therein under the action of pressure and/or temperature to generate an at least partial solution, and then precipitating the polyamide from the at least partial solution; the resulting ultrafine polyamide powders have a specific BET surface area of 5-100 m2/g; a fineness d50 of less than 70 μm; an apparent density AD from 250 to 1000 g/l; and a particle content of 0.1 to 80% by weight of inorganic particles based on the total weight of the polyamide powder; which powders are equally suitable for coatings and for mouldings and components with improved mechanical properties.

    摘要翻译： 通过使具有相对溶液粘度和相对浓度的相对比例在1.5至2.0的范围内的聚酰胺制备基于聚酰胺制备的超细粉末的方法，其在25℃的0.5％间甲酚溶液中，在无机物存在下用醇介质 在压力和/或温度的作用下悬浮在其中的颗粒以产生至少部分溶液，然后从所述至少部分溶液中沉淀聚酰胺; 所得超细聚酰胺粉末的BET比表面积为5-100m 2 / g; 细度d50小于70μm; 表观密度AD为250〜1000g / l; 和基于聚酰胺粉末的总重量的无机颗粒的0.1〜80重量％的颗粒含量; 这些粉末同样适用于涂料和具有改进的机械性能的模制品和组分。

    Polymer powder with phosphonate-based flame retardant, process for its production, and moldings produced from this polymer powder
    18.
    发明授权
    Polymer powder with phosphonate-based flame retardant, process for its production, and moldings produced from this polymer powder 有权
    具有膦酸酯类阻燃剂的聚合物粉末，其生产方法，以及由该聚合物粉末制成的模制品

    公开(公告)号：US07317044B2

    公开(公告)日：2008-01-08

    申请号：US10892092

    申请日：2004-07-16

    申请人： Sylvia Monsheimer ,  Maik Grebe ,  Franz-Erich Baumann

    发明人： Sylvia Monsheimer ,  Maik Grebe ,  Franz-Erich Baumann

    IPC分类号： C08K9/10 ,  C08K5/5333

    CPC分类号： C08L77/02 ,  B29C41/003 ,  B29C64/00 ,  B29K2105/0026 ,  B33Y70/00 ,  B33Y80/00 ,  C08K5/0066 ,  C08K5/5317 ,  C08L77/00 ,  C08L77/06 ,  C08L2666/84

    摘要： The present invention relates to a polymer powder composed of polyamide or of copolyamides, which also comprises flame retardant, in particular phosphonates, to a layer-by-layer process which selectively melts regions or selectively binds them, and also to moldings produced from this polymer powder. Compared with conventional products, the moldings constructed using the powder of the invention exhibit marked advantages in flammability and combustibility and drop behavior, particularly with respect to UL® (Underwriters Laboratories) classification. Furthermore, moldings produced from polymer powder of the invention have adequately good mechanical properties when compared with moldings based on polymer powders without flame retardant, in particular in terms of modulus of elasticity and tensile strain at break. In addition, these moldings also have a density close to that of injection moldings.

    摘要翻译： 本发明涉及由聚酰胺或共聚酰胺组成的聚合物粉末，其还包含阻燃剂，特别是膦酸盐，其选择性地熔融区域或选择性地结合它们的层压方法，以及由该聚合物制备的模制品 粉末。 与常规产品相比，使用本发明粉末构造的模制品在可燃性和可燃性和降落行为方面表现出显着的优点，特别是在UL（R）（Underwriters Laboratories）分类方面。 此外，与基于不具有阻燃剂的聚合物粉末的模制品相比，特别是在弹性模量和断裂拉伸应变方面，与本发明的聚合物粉末制备的模制品相比具有足够好的机械性能。 此外，这些模制品的密度也接近注射成形品。