Preparation of thermoplastics
    1.
    发明授权
    Preparation of thermoplastics 失效
    热塑性塑料的制备

    公开(公告)号:US5910276A

    公开(公告)日:1999-06-08

    申请号:US620310

    申请日:1996-03-22

    摘要: Toughened thermoplastics are prepared by mechanically dewatering a water-moist elastomer component A containing up to 60% by weight of residual water and mixing the resulting dewatered elastomer component A' with a thermoplastic polymer B in an extruder, by a process in which the elastomer component A is fed to a twin-screw extruder which has corotating, in each case double-flight, screws and essentially includes, in the transport direction,a metering section in which the elastomer component A is fed to the extruder by a metering means,at least one squeeze section which serves for dewatering and contains at least one retarding element and in each case at least one associated dewatering orifice,at least one section provided with a conveying screw or at least one section provided with mixing, kneading or other plasticating elements or combinations of these elements,at least one section in which the thermoplastic polymer B is introduced as a melt into the extruder,at least one section provided with mixing, kneading or other plasticating elements or combinations of these elements,at least one devolatilization section which is provided with at least one devolatilization orifice and in which the residual water is removed as steam, anda discharge zone,the water emerging from the dewatering orifices being present partially or completely in the liquid phase, and the extruder being operated at a screw speed of from 50 to 600 min.sup.-1 and average shear rates of from 20 to 240 s.sup.-1.

    摘要翻译: 通过机械脱水含有高达60重量%的残余水的水分弹性体组分A并将所得脱水的弹性体组分A'与热塑性聚合物B混合在挤出机中,通过以下方法制备增韧的热塑性塑料,其中弹性体组分 A被输送到双螺杆挤出机,双螺杆挤出机在每个情况下都具有旋转螺旋,并且在输送方向上基本上包括计量部分,其中弹性体组分A通过计量装置进料到挤出机, 至少一个挤压部分,其用于脱水并且包含至少一个延迟元件,并且在每种情况下包括至少一个相关联的脱水孔,设置有输送螺杆的至少一个部分或设置有混合,捏合或其它塑化元件的至少一个部分, 这些元件的组合,将热塑性聚合物B作为熔体引入挤出机中的至少一个部分,至少一个部分 n具有混合,捏合或其它塑化元件或这些元素的组合,至少一个脱挥发段,其设置有至少一个脱挥发分孔,残留水作为蒸汽除去,以及排出区,从 脱水孔部分或完全在液相中存在,挤出机以50至600分钟-1的螺杆速度和20至240s -1的平均剪切速率操作。

    Dewatering of water-moist graft rubber
    2.
    发明授权
    Dewatering of water-moist graft rubber 失效
    水湿移植橡胶脱水

    公开(公告)号:US5817266A

    公开(公告)日:1998-10-06

    申请号:US736439

    申请日:1996-10-24

    摘要: Essentially dry materials are obtained by mechanically dewatering water-moist rubber, prepared by emulsion polymerization and precipitation, to give a compact material having a rubber content of at least 50%, by a process in which the previously dewatered rubber is fed to the feed section of a twin-screw extruder which has screws rotating in the same direction and possesses, in succession in the conveying direction, at least two back-up zones and two associated dewatering orifices, each of which may be provided with a retaining screw, and at least one kneading zone, one devolatilization zone and finally one discharge zone, which may be closed by a die lip, and the water separated off is discharged at the dewatering orifices in liquid form.

    摘要翻译: 通过将通过乳液聚合和沉淀制备的水分橡胶机械脱水得到基本上干燥的材料,通过将预脱水的橡胶进料到进料部分的方法得到橡胶含量为至少50%的紧凑材料 的双螺杆挤出机,其具有沿相同方向旋转并沿传送方向连续地具有至少两个支撑区域和两个相关联的脱水孔的螺杆,每个可以设置有固定螺钉,并且在 至少一个捏合区,一个脱挥发区和最后一个排出区,其可以被模唇封闭,并且分离的水在液体形式的脱水孔处排出。

    Thermoplastic granulates
    6.
    发明申请
    Thermoplastic granulates 审中-公开
    热塑性颗粒

    公开(公告)号:US20060202373A1

    公开(公告)日:2006-09-14

    申请号:US10549098

    申请日:2004-03-10

    IPC分类号: B29B9/06

    摘要: Pelletized materials based on at least one thermoplastically processable polymer, where the pellets have less than 10% of concave regions and otherwise are convex in every other region, this being determined by means of incident-light interference-contrast spectroscopy, by taking the average value for the ratios of the outline area to the entire outline area for an assembly of pellets.

    摘要翻译: 基于至少一种热塑性可加工聚合物的颗粒化材料,其中颗粒具有小于10%的凹陷区域,并且在另外的每个区域中是凸起的,这是通过入射光干涉对比度光谱法,通过取平均值 对于组装颗粒的轮廓区域与整个轮廓区域的比率。

    Dull, transparent thermoplastic resins
    10.
    发明授权
    Dull, transparent thermoplastic resins 失效
    透明的热塑性树脂

    公开(公告)号:US5717033A

    公开(公告)日:1998-02-10

    申请号:US714490

    申请日:1996-09-18

    摘要: A particulate polymer A having a mean particle size of less than 1000 nm consists of a1: up to 99.8% by weight of at least one vinylaromatic monomer a1, a2: up to 99.8% by weight of at least one alkyl methacrylate a2 where the alkyl radical is of 1 to 8 carbon atoms, a3: up to 50% by weight of at least one polar, copolymerizable, ethylenically unsaturated monomer a3, a4: from 0.1 to 10% by weight of at least one polyfunctional, crosslinking monomer a4 and a5: from 0.1 to 15, preferably from 0.5 to 10, % by weight of at least one monomer a5 containing one or more acidic, basic or epoxy groups, the sum of the components a1, a2 and a3 being from 75 to 99.8% by weight, based on A, and the sum of a1, a2, a3, a4 and a5 being 100% by weight, based on A.

    摘要翻译: 平均粒径小于1000nm的颗粒聚合物A由a1:至多99.8重量%的至少一种乙烯基芳族单体a1,a2:至多99.8重量%的至少一种甲基丙烯酸烷基酯a2组成,其中烷基 自由基具有1-8个碳原子,a3:至多50重量%的至少一种极性,可共聚的烯属不饱和单体a3,a4:0.1-10重量%的至少一种多官能交联单体a4和a5 至少一种含有一个或多个酸性,碱性或环氧基团的单体a5的0.1至15,优选0.5至10重量%,组分a1,a2和a3的总和为75至99.8重量% ,基于A,a1,a2,a3,a4和a5的总和为100重量%,基于A.