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。

    Process for producing thermoplastics
    2.
    发明授权
    Process for producing thermoplastics 有权
    生产热塑性塑料的工艺

    公开(公告)号:US6165399A

    公开(公告)日:2000-12-26

    申请号:US269344

    申请日:1999-03-25

    摘要: A process for preparing thermoplastics or polymer blends comprising (A) from 5 to 95% of a water-moist elastomer component containing up to 60% of residual water, (B) from 5 to 95% of a thermoplastic polymer, (C) from 0 to 95% of a further polymer, and (D) from 0 to 70% of additives, said process comprising mixing the components A to D in an extruder with mechanical dewatering of component A, wherein the extruder has at least two rotating screws and, in the conveying direction, is essentially composed of a metering section into which component A is fed, a squeeze section which serves for dewatering component A and contains a retarding element and an associated dewatering orifice which is present upstream of the retarding element by a distance corresponding to at least one screw diameter, a feed section in which the thermoplastic polymer B is introduced as a melt into the extruder, a plastication section with mixing or kneading elements, a devolatilization section with an orifice and in which the remaining water is removed as steam, and a discharge zone.

    摘要翻译: PCT No.PCT / EP97 / 05000 Sec。 371日期1999年3月25日 102(e)1999年3月25日PCT PCT 1997年9月12日PCT公布。 第WO98 / 13412号公报 日本1998年4月2日制备热塑性塑料或聚合物共混物的方法,其包含(A)5-95%的含有高达60%的残余水的水 - 润湿弹性体组分,(B)5-95%的热塑性聚合物 ,(C)0至95%的另外的聚合物,和(D)0至70%的添加剂,所述方法包括在挤出机中将组分A至D混合,组分A的机械脱水,其中挤出机具有 至少两个旋转螺钉,并且在输送方向上基本上由进料部件A组成的计量部分组成,用于脱水部件A的挤压部分,并且包含延迟元件和相关联的脱水孔口,其位于 延迟元件相当于至少一个螺杆直径的距离,其中将热塑性聚合物B作为熔体引入挤出机的进料部分,具有混合或捏合元件的塑化部分,具有 孔,其中剩余的水作为蒸汽除去,以及排出区。

    Preparation of thermoplastics
    3.
    发明授权
    Preparation of thermoplastics 失效
    热塑性塑料的制备

    公开(公告)号:US5958316A

    公开(公告)日:1999-09-28

    申请号:US620308

    申请日:1996-03-22

    摘要: Toughened thermoplastics are prepared by mechanically dewatering a water-moist elastomer component A containing up to 50% by weight of residual water and mixing the resulting dewatered elastomer component A' with a thermoplastic polymer B in a mixing unit, by a process in which the elastomer component A is fed to a twin-screw extruder which has corotating screws and essentially includes, in the transport direction,one unheated metering section in which the elastomer component A is fed to the extruder by a metering means,at least one unheated 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 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 heated discharge zone,and in which the water emerging from the dewatering orifices is present partially or completely in the liquid phase.

    摘要翻译: 增韧的热塑性塑料通过机械脱水含有高达50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混合在混合单元中,通过其中弹性体 组分A被输送到双螺杆挤出机,该双螺杆挤出机具有同向螺钉,并且在输送方向上基本上包括一个未加热的计量部分,其中弹性体组分A通过计量装置进料到挤出机,至少一个未加热的挤压部分 用于脱水并且包含至少一个延迟元件,并且在每种情况下至少一个相关联的脱水孔,至少一个部分,其中热塑性聚合物B作为熔体引入挤出机中,至少一个部分设置有混合,捏合或 其它塑化元件或这些元件的组合,至少一个脱挥发段,其设置有至少一个脱挥发部分 并且其中残留的水作为蒸汽除去,并且被加热的排放区,其中从脱水孔排出的水部分地或完全地存在于液相中。

    Preparation of thermoplastics
    4.
    发明授权
    Preparation of thermoplastics 失效
    热塑性塑料的制备

    公开(公告)号:US5852113A

    公开(公告)日:1998-12-22

    申请号:US620309

    申请日:1996-03-22

    摘要: Toughened thermoplastics are prepared by mixing a water-moist elastomer component A containing up to 60% by weight of residual water with a thermoplastic polymer B and further polymers C and additives D in an extruder with mechanical dewatering of the elastomer component A, by a process in which the components A, B, C and D are fed to a twin-screw extruder which has corotating screws and essentially comprises, in the transport direction, at least one 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 the component A and contains at least one retarding element and in each case at least one associated dewatering orifice, 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, and a discharge zone, the water emerging from the dewatering orifices being present partially or completely in the liquid phase, and the components C or D or mixtures thereof, together or separately from one another, being fed to one or more of the stated extruder sections, either together with the component A or B or mixtures thereof or separately from A and B.

    摘要翻译: 增韧的热塑性塑料通过将包含高达60重量%的残余水的水分润湿性组分A与热塑性聚合物B混合,并且在挤出机中将另外的聚合物C和添加剂D混合在一起,通过一种方法将该弹性体组分A机械脱水 其中将组分A,B,C和D进料到具有同向旋转螺杆的双螺杆挤出机中,并且在输送方向上基本上包括至少一个计量段,其中弹性体组分A通过 计量装置,至少一个挤压部分,其用于对部件A进行脱水并且包含至少一个延迟元件,并且在每种情况下包含至少一个相关联的脱水孔,至少一个部分,其中热塑性聚合物B作为熔体引入其中 挤出机,至少一个具有混合,捏合或其它塑化元件或这些元件的组合的部分,至少一个脱挥发段 与至少一个脱挥发孔一起使用,其中残留的水作为蒸汽除去,以及排出区,从脱水孔中排出的水部分或完全存在于液相中,以及组分C或D或其混合物, 一起或彼此分开地,被供给到一个或多个所述的挤出机部分,与组分A或B一起或其混合物或与A和B分开。

    Coating of drug forms
    9.
    发明授权
    Coating of drug forms 失效
    药物形式的涂层

    公开(公告)号:US5326586A

    公开(公告)日:1994-07-05

    申请号:US957375

    申请日:1992-10-07

    摘要: A process for coating drug forms by application of an aqueous dispersion which contains as binder a redispersed latex of an emulsion polymer onto the drug form and evaporating the water at a temperature at which the latex particles form a film, comprises employing a polymer dispersion which has been prepared by emulsion polymerization of one part by weight of at least one ethylenically unsaturated polymerizable monomer, by means of initiators which provide free radicals, in the presence of from 0.1 to 2 parts by weight of saccharified starch, and from 0 to 5% by weight, based on the monomer or monomers, of a surfactant, with or without further conventional additives, drying to a powder and redispersing in water.

    摘要翻译: 通过应用含水分散体涂覆药物形式的方法,该水性分散体含有作为粘合剂的乳液聚合物的再分散胶乳到药物形式上并在胶乳颗粒形成膜的温度下蒸发水,包括使用聚合物分散体,其具有 通过在0.1至2重量份的糖化淀粉和0至5重量%的糖化淀粉存在下,通过使用1重量份的至少一种烯键式不饱和可聚合单体,通过提供自由基的引发剂, 重量,基于单体或单体的表面活性剂,含或不含其它常规添加剂,干燥至粉末并再分散于水中。