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    • 84. 发明授权
    • Control valve for cryogenic use
    • 低温控制阀
    • US06321774B1
    • 2001-11-27
    • US09483609
    • 2000-01-14
    • Karl-Heinz Ott
    • Karl-Heinz Ott
    • F16K326
    • F16K31/52F02K9/58F16K1/12F16K31/047F16K31/52433F16K31/54G05D16/202Y10T137/3367Y10T137/86734
    • A motor-driven control valve for cryogenically liquified rocket propellant comprises a valve casing with a co-axial inlet port and outlet port, a slidable regulating sleeve, an electric motor, a gear, a drive chamber within the casing, and a drive transmission in the drive chamber. The regulating sleeve is centrally arranged and slidably mounted and sealed in the valve casing and the drive chamber. Flow slots are circumferentially distributed around the regulating sleeve. The externally mounted motor and gear control the position of the regulating sleeve through the drive transmission. Sliding adjustment of the position of the sleeve regulates the exposed cross-section of the flow slots, thereby also regulating the open and closed switching of the control valve. The regulating sleeve is the only moving part exposed to the flowing liquid, and the liquid pressure and flow forces act only radially on the axially slidable sleeve, so that the hydraulic forces do not influence the driving force required for opening and closing the valve.
    • 用于低温液化火箭推进剂的电动控制阀包括具有同轴入口和出口的阀壳,可滑动调节套,电动马达,齿轮,壳体内的驱动室,以及驱动传动装置 驱动室。 调节套筒集中布置并可滑动地安装并密封在阀壳体和驱动室中。 流动槽围绕调节套筒周向分布。 外部安装的电机和齿轮通过驱动传动装置控制调节套筒的位置。 套筒的位置的滑动调节调节流槽的暴露横截面,从而也调节控制阀的打开和闭合切换。 调节套筒是仅暴露于流动液体的唯一移动部件,液体压力和流动力仅在径向上作用在可轴向滑动的套筒上,使得液压力不影响打开和关闭阀门所需的驱动力。
    • 86. 发明授权
    • Mixtures of thermoplastic polymers in powder form
    • 粉末形式的热塑性聚合物的混合物
    • US5112910A
    • 1992-05-12
    • US743678
    • 1991-08-12
    • Karl-Erwin PiejkoChristian LindnerRalph OstarekHans-Eberhard BraeseKarl-Heinz Ott
    • Karl-Erwin PiejkoChristian LindnerRalph OstarekHans-Eberhard BraeseKarl-Heinz Ott
    • C08J3/00C08L21/00C08L25/12C08L33/06C08L33/12C08L51/04
    • C08L33/06C08J3/005C08L21/00C08L25/12C08L33/12C08L51/04
    • Process for the preparation of mixtures of thermoplastic polymers in powder form from aqueous emulsions ofa) particulate, partly crosslinked rubber-like copolymers of a C.sub.2 -C.sub.8 -alkyl acrylate and/or butadiene with (based on the copolymer) up to 40 wt. % acrylonitrile, styrene or C.sub.1 -C.sub.4 -alkyl methacrylate,b) a thermoplastic resin, and if appropriatec) a rubber-rich graft polymer of styrene, .alpha.-methylstyrene, acrylonitrile, methyl methacrylate and/or alkyl acrylate on a diene or alkyl acrylate rubber having a rubber content of 50 to 95 wt. %,wherein aqueous emulsions of a) and b) and if appropriate c) having polymer contents of 15 to 50 wt. % are mixed with a coagulate solution simultaneously, but in separate streams, continuously or semi-continuously at 20.degree. to 100.degree. C., the polymers a) and b) and if appropriate c) being coagulated, the streams are combined and the polymer mixture is then separated off.
    • 制备粉末形式的热塑性聚合物的混合物的方法,该方法由以下混合物的水性乳液制备:a)丙烯酸C 2 -C 8烷基酯和/或丁二烯与(基于共聚物)的至少40重量%的颗粒部分交联的橡胶状共聚物。 丙烯腈,苯乙烯或甲基丙烯酸C 1 -C 4烷基酯,b)热塑性树脂,如果合适,c)在二烯或烷基上的苯乙烯,α-甲基苯乙烯,丙烯腈,甲基丙烯酸甲酯和/或丙烯酸烷基酯的富含橡胶的接枝聚合物 丙烯酸酯橡胶,其橡胶含量为50〜95重量% %,其中a)和b)和如果合适的水性乳液c)具有15至50重量%的聚合物含量。 %与凝固溶液同时混合,但在单独的流中,在20℃至100℃连续或半连续,聚合物a)和b),如果合适,c)凝结,将流合并,聚合物 混合物然后分离出来。
    • 89. 发明授权
    • Process for the preparation of thermoplastic moulding compositions
    • 制备热塑性模塑组合物的方法
    • US4885337A
    • 1989-12-05
    • US69967
    • 1987-07-06
    • Herbert EichenauerAlfred PischtschanKarl-Heinz Ott
    • Herbert EichenauerAlfred PischtschanKarl-Heinz Ott
    • C08F279/04C08F2/22C08F279/00C08F279/02C08L25/12C08L51/00C08L51/04C08L55/00C08L55/02
    • C08L25/12C08F279/02C08L51/04
    • Process for the preparation of a thermoplastic moulding composition of 10 to 65% by weight of at least one graft polymer which is obtainable by emulsion polymerization of styrene and acrylonitrile in a weight ratio of 90:10 to 50:50, it being possible for all or some of the styrene to be replaced by .alpha.-methylstyrene or methyl methacrylate, in the presence of at least one rubber base, and the weight ratio of monomers employed to rubber polymer employed being 20:80 to 70:30, and 90 to 35% by weight of a copolymer of styrene and acrylonitrile in a weight ratio of 90:10 to 50:50, it being possible for all or some of the styrene to be replaced by .alpha.-methylstyrene or methyl methacrylate, wherein, to prepare the graft polymer, the grafting monomers and 0.05 to 1.00 part by weight (per 100 parts by weight of grafting monomer) of a mercaptan are added stepwise to the latex of the rubber base over a period of time, the part amount of the monomer added in each time interval .DELTA.t.sub.n+1 being 0.30 to 0.95 times the amount of monomer added in the preceding time interval .DELTA.t.sub.n at least in the first half of the period of time, and the total period of time comprising n time intervals where n=3 to 30, and each time interval .DELTA.t being 5 to 100 minutes long.
    • 用于制备10至65重量%的至少一种接枝聚合物的热塑性模塑组合物的方法,所述接枝聚合物可以通过苯乙烯和丙烯腈的重量比为90:10至50:50的乳液聚合而获得,所有这些都可能 或由至少一个橡胶基团存在下由α-甲基苯乙烯或甲基丙烯酸甲酯代替的一些苯乙烯,并且所用单体与橡胶聚合物的重量比为20:80至70:30和90至35 重量比为90:10至50:50的苯乙烯和丙烯腈的共聚物的重量比,可以用α-甲基苯乙烯或甲基丙烯酸甲酯代替全部或一些苯乙烯,其中制备接枝物 聚合物,接枝单体和0.05至1.00重量份(每100重量份接枝单体)硫醇在一段时间内逐步添加到橡胶基料的胶乳上,每次加入单体的部分量 时间间隔DELTA tn + 1 bei ng至少在上述时间段的前半部分中,在上述时间间隔DELTA tn中添加的单体量的0.30〜0.95倍,n = 3〜30的n个时间间隔的总时间,以及每个时间间隔 长达5到100分钟。