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    Process for the production of dihydroxypropyltheophylline
    1.
    发明授权
    Process for the production of dihydroxypropyltheophylline 失效
    二羟基丙基茶碱生产工艺

    公开(公告)号：US4405783A

    公开(公告)日：1983-09-20

    申请号：US388464

    申请日：1982-06-14

    申请人： Volker Binder ,  Wolfgang Merk ,  Peter Werle

    发明人： Volker Binder ,  Wolfgang Merk ,  Peter Werle

    IPC分类号： B01J23/00 ,  C07D473/08

    CPC分类号： C07D473/08

    摘要： Pure hydroxypropyltheophylline is produced by the catalytic reaction of theophylline with glycidol in the presence of a hydroxide of a short chain alcoholate of an alkali metal or an alkali metal salt of a pseudohydrohalic acid which has a readily polarizable anion. The catalyst is suitably employed in an amount between 0.01 and 0.2 moles per mole of theophylline. The dihydroxypropyltheophylline is obtained directly in the reaction in a high purity.

    摘要翻译： 纯碱羟基茶碱通过茶碱与缩水甘油的催化反应在碱金属的短链醇化物或具有易挥发的阴离子的假卤代酸的碱金属盐的氢氧化物存在下制备。 催化剂的适用量为每摩尔茶碱0.01至0.2摩尔。 二羟基丙基茶碱直接在反应中以高纯度获得。

    Process for recovering 2-hydroxy-4-methylthiobutyric acid (MHA), MHA and its use
    8.
    发明授权
    Process for recovering 2-hydroxy-4-methylthiobutyric acid (MHA), MHA and its use 失效
    2-羟基-4-甲硫基丁酸（MHA），MHA及其用途的回收方法

    公开(公告)号：US5976609A

    公开(公告)日：1999-11-02

    申请号：US776217

    申请日：1997-01-13

    申请人： Hans-Albrecht Hasseberg ,  Klaus Huthmacher ,  Herbert Tanner ,  Volker Hafner ,  Harald Heinzel

    发明人： Hans-Albrecht Hasseberg ,  Klaus Huthmacher ,  Herbert Tanner ,  Volker Hafner ,  Harald Heinzel

    IPC分类号： A23K1/16 ,  C07C319/20 ,  C07C319/28 ,  C07C323/52 ,  C07C323/60 ,  A23L1/305 ,  A23L1/28 ,  C15C315/02 ,  C15C315/06

    CPC分类号： C07C319/28 ,  A23K20/105 ,  C07C319/20 ,  Y10S426/807

    摘要： It is known to isolate MHA from a reaction mixture obtained by the addition of hydrocyanic acid (HCN) to methyl mercaptopropionic aldehyde (MMP) and the hydrolysis of the methyl mercapto propionic aldehyde cyanohydrine (MMP-CH) obtained thereby with sulphuric acid, in which the reaction mixture is brought into contact with a substantially non-water-miscible organic solvent, in order to form an extraction solution having the solvent and MHA transferred from the reaction mixture, and the MHA is obtained as an extract from this extraction solution by concentration. The simplest and most economical process of the invention concerning the processing of the reaction product which facilitates the production of a highly concentrated product with an extremely low dimer, oligomer and by-product content, is characterised in that the concentration is conducted in such a way that the remaining extract contains less than 4 wt % and preferably less than 2 wt % of water. Animal feed supplement, mixtures for supplementing animal feed, e.g. with methionine or ammonium-MHA.

    摘要翻译： PCT No.PCT / EP95 / 02515 Sec。 371日期1997年1月13日 102（e）日期1997年1月13日PCT提交1995年6月28日PCT公布。 公开号WO96 / 01809 日本1996年1月25日已知通过将氢氰酸（HCN）加入到甲基巯基丙醛（MMP）中获得的反应混合物和由此获得的甲基巯基丙醛氰基氢醌（MMP-CH）的水解来分离MHA 硫酸，其中使反应混合物与基本上不与水混溶的有机溶剂接触，以形成从反应混合物中转移有溶剂和MHA的提取溶液，并且获得MHA作为 该提取液通过浓缩。 关于有助于生产具有极低二聚体，低聚物和副产物含量的高浓缩产物的反应产物的加工的本发明的最简单和最经济的方法的特征在于以这种方式进行浓缩 剩余的提取物含有小于4重量％，优选小于2重量％的水。 动物饲料补充剂，补充动物饲料的混合物。 与甲硫氨酸或铵-MAA。

    Polymerisable dental material and use of apatite fillers in the dental material
    9.
    发明授权
    Polymerisable dental material and use of apatite fillers in the dental material 失效
    可聚合牙科材料和在牙科材料中使用磷灰石填料

    公开(公告)号：US5952399A

    公开(公告)日：1999-09-14

    申请号：US941549

    申请日：1997-09-30

    申请人： Harald Rentsch

    发明人： Harald Rentsch

    IPC分类号： A61K6/08 ,  A61K6/033 ,  A61K6/083 ,  C08K3/32

    CPC分类号： A61K6/0085 ,  A61K6/0835

    摘要： A dental material based on an organic polymerisable binding agent has a content ofA) one or more mixed apatites of the typeA1) A.sub.10 (XO.sub.4).sub.6 Z.sub.2 +/B*.sub.10-u C*.sub.u (Y*).sub.6 Z'.sub.2 and/orA2) A'.sub.10-r (X'O.sub.4).sub.6-s Z".sub.2-t +/B'.sub.r (Y').sub.s Q.sub.t -B".sub.10-u' C'.sub.u' (Y").sub.6 Z'".sub.2 and/orA3) A".sub.10-r' (X"O.sub.4).sub.6-s' Z"".sub.2-t' +/A'".sub.r' (X'"O.sub.4).sub.s' +/B'".sub.10-u" C".sub.u" (Y'").sub.6 Z'"".sub.2in which the formulae assume the significance specified in the description, in a quantity that is effective for the absorption of ions from the biological application environment of the dental material. The polymerisable dental material has variably adjustable transparency, good polishability, high strength and the capacity to release and absorb ions into and from a biological environment. Also described is a process for using the mixed apatites A1), A2) and/or A3) in polymerisable dental materials.

    摘要翻译： 基于有机可聚合结合剂的牙科材料的含量为A）一种或多种混合的磷灰石，类型为A1）A10（XO4）6Z2 + / B * 10-uC * u（Y *）6Z'2和/或A2 ）A'10-r（X'O4）6-sZ''2-t + / B'r（Y'）sQt-B''10-u'C'u'（Y“）6Z”'2 和/或A3）A''10-r'（X''O4）6-s'Z“”2-t'+ / A“''''（X”'O4）s'+ / 其中公式假设在描述中指定的含义，以有效吸收的数量的B''10-u''C''''''Y（“”“6Z” 来自牙科材料生物应用环境的离子。 可聚合的牙科材料具有可变的透明度，良好的可抛光性，高强度和释放和吸收进入生物环境的离子的能力。 还描述了在可聚合牙科材料中使用混合磷灰石A1），A2）和/或A3）的方法。

    Coated sodium percarbonate particles, process for the production thereof and use thereof
    10.
    发明授权
    Coated sodium percarbonate particles, process for the production thereof and use thereof 失效
    涂覆过碳酸钠颗粒，其制备方法及其用途

    公开(公告)号：US5935708A

    公开(公告)日：1999-08-10

    申请号：US755613

    申请日：1996-11-25

    申请人： Ruediger Schuette ,  Martin Bewersdorf ,  Claas-Juergen Klasen

    发明人： Ruediger Schuette ,  Martin Bewersdorf ,  Claas-Juergen Klasen

    IPC分类号： C01B15/10 ,  C11D3/02 ,  C11D3/08 ,  C11D3/39 ,  C11D17/00 ,  B32B5/16 ,  C11D3/10

    CPC分类号： C11D3/046 ,  C01B15/106 ,  C11D17/0039 ,  C11D3/3942 ,  Y10T428/2991

    摘要： In order to increase active oxygen stability, sodium percarbonate is coated with single or multiple layers of various substances. Sodium percarbonate particles consist of a core of sodium percarbonate fluidized bed spray granulate and sodium sulphate, which may be partially hydrated, as the sole constituent of a single coating layer. The particles exhibit both elevated active oxygen stability and very good ensilability. The coating layer is applied by spraying an aqueous Na.sub.2 SO.sub.4 solution onto the particles to be coated, which were themselves produced by fluidized bed spray granulation, in a fluidized bed and vaporizing water at a fluidized bed temperature of 35 to 100.degree. C.

    摘要翻译： 为了提高活性氧的稳定性，过碳酸钠被单层或多层各种物质涂覆。 过碳酸钠颗粒由过碳酸钠流化床喷雾颗粒和硫酸钠的核心组成，其可以部分水合，作为单一涂层的唯一成分。 颗粒表现出升高的活性氧稳定性和非常好的可靠性。 通过在流化床中以流化床温度为35〜100℃喷雾Na 2 SO 4水溶液涂布在待涂布的颗粒上，其本身通过流化床喷雾造粒在流化床中和蒸发水中进行。