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103 条记录 (耗时 0.023 秒)

    Preparation of lactates
    11.
    发明授权
    Preparation of lactates 失效
    乳酸盐的制备

    公开(公告)号：US5453365A

    公开(公告)日：1995-09-26

    申请号：US342002

    申请日：1994-11-16

    申请人： Hans-Josef Sterzel ,  Herbert Vogel ,  Herbert Exner ,  Detlef Kratz ,  Brudermuller

    发明人： Hans-Josef Sterzel ,  Herbert Vogel ,  Herbert Exner ,  Detlef Kratz ,  Brudermuller

    IPC分类号： C07C59/08 ,  C07C67/08 ,  C12P7/56 ,  C12R1/245 ,  C12P7/62

    CPC分类号： C12P7/56 ,  C07C59/08 ,  C07C67/08

    摘要： A process for the preparation of lactates by fermentation of mixtures containing sugars, conversion of the lactic acid obtained during fermentation to its salts, followed by esterification, in whicha) there is added to the fermentation liquor an alkaline earth metal carbonate or bicarbonate so as to neutralize the resultant lactic acid to a degree of at least 90 mol %,b) the resulting fermentation liquor is adjusted to pH 7 to 13 by the addition of NH.sub.3 and CO.sub.2 and the resultant precipitates are separated, andc) the resulting, purified ammonium lactate solution is esterified with an alcohol.

    摘要翻译： 通过发酵含糖混合物的发酵制备乳酸盐的方法，将发酵过程中获得的乳酸转化为其盐，然后酯化，其中a）向发酵液中加入碱土金属碳酸盐或碳酸氢盐，以便 将所得乳酸中和至至少90mol％的程度，b）通过加入NH 3和CO 2将得到的发酵液调节至pH7至13，分离出所得沉淀，和c）得到的纯化 乳酸铵溶液用酒精酯化。

    Preparation of thermoplastic compositions filled with ceramic powders and oxidic sinter additives
    15.
    发明授权
    Preparation of thermoplastic compositions filled with ceramic powders and oxidic sinter additives 失效
    用陶瓷粉末和氧化锡添加剂填充的热塑性组合物的制备

    公开(公告)号：US5073319A

    公开(公告)日：1991-12-17

    申请号：US580858

    申请日：1990-09-11

    申请人： Hans-Josef Sterzel

    发明人： Hans-Josef Sterzel

    IPC分类号： B28B3/20 ,  B29C67/24 ,  C04B35/584 ,  C04B35/622 ,  C04B35/634 ,  C04B35/636

    CPC分类号： C04B35/63408 ,  B29C67/245 ,  C04B35/584 ,  C04B35/634 ,  C04B35/63424 ,  C04B35/63468 ,  C04B35/63488 ,  C04B35/6365

    摘要： A thermoplastic composition containing a ceramic powder per volume fill level of from 40 to 80% together with an oxidic sinter additive is prepared by melting the thermoplastic in a first zone of a mixing section consisting of a plurality of zones, admixing the molten plastic in the adjoining second zone with a suspension of a ceramic powder in an organic solvent which contains a hydrolyzable precursor compound of the oxidic sinter additive in solution, hydrolyzing the precursor compound in the third zone by adding water, removing the solvent and any volatile hydrolysis products by distillation under reduced pressure in the fourth zone, and compressing and extruding the melt containing the ceramic powder from the fifth zone.

    摘要翻译： 通过在由多个区域组成的混合区域的第一区域中熔化热塑性塑料制备含有40-80％体积填充量的陶瓷粉末和热塑性组合物的热塑性组合物，所述混合区段由多个区域混合，将熔融塑料混合在 邻接的第二区域与陶瓷粉末在有机溶剂中的悬浮液，其在溶液中含有氧化烧结添加剂的可水解前体化合物，通过加水水解第三区域中的前体化合物，通过蒸馏除去溶剂和任何挥发性水解产物 在第四区域中减压，并且从第五区域压缩并挤出含有陶瓷粉末的熔体。

    Wholly aromatic mesomorphic polyether esters and the preparation thereof
    16.
    发明授权
    Wholly aromatic mesomorphic polyether esters and the preparation thereof 失效
    全芳族介晶聚醚酯及其制备方法

    公开(公告)号：US4797465A

    公开(公告)日：1989-01-10

    申请号：US938050

    申请日：1986-12-04

    申请人： Michael Portugall ,  Gerd Blinne ,  Hans-Josef Sterzel

    发明人： Michael Portugall ,  Gerd Blinne ,  Hans-Josef Sterzel

    IPC分类号： C08G63/68 ,  C08G63/60 ,  C08G63/688

    CPC分类号： C08G63/688 ,  C08G63/605

    摘要： Wholly aromatic mesomorphic polyesters which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of(a) not less than 10 mol % of repeat units of the formula I ##STR1## (b) a molar amount equivalent to the total amount of components (c) and (d) of repeat units of the formula II ##STR2## (c) from 3 to 20 mol % of repeat units of the formulae III and/or IV ##STR3## and (d) from 5 to 30 mol % of repeat units of the formula V ##STR4## the molar proportions of components a, b, c and d adding up to 100 mol % in each case, the preparation thereof and moldings and coatings prepared therefrom.

    摘要翻译： 完全芳族介晶聚酯，其在320℃以下形成液晶纤维形成熔体，并由（a）不少于10摩尔％的式I重复单元组成（b）摩尔量当量 相对于式II（c）的重复单元的组分（c）和（d）的总量为3至20摩尔％的式III和/或IV的重复单元。图像 > IV和（d）5至30摩尔％的式V的重复单元V组分a，b，c和d的摩尔比例在每种情况下加至100摩尔％，其制备和模塑 和由其制备的涂层。

    Non-crosslinked polyether-ketones which can be processed by a thermoplastic method, and their preparation
    18.
    发明授权
    Non-crosslinked polyether-ketones which can be processed by a thermoplastic method, and their preparation 失效
    可以通过热塑性方法加工的非交联聚醚酮，及其制备方法

    公开(公告)号：US4645819A

    公开(公告)日：1987-02-24

    申请号：US727135

    申请日：1985-04-25

    申请人： Hans-Josef Sterzel

    发明人： Hans-Josef Sterzel

    IPC分类号： E21D11/34 ,  E21D17/10 ,  C08G8/02 ,  C08G14/00

    CPC分类号： E21D17/10 ,  E21D11/34

    摘要： Polyether-ketones containing the structural unit ##STR1## have a completely linear structure, and are heat-stable and free from crosslinking reactions during processing at from 390.degree. to 420.degree. C.They are prepared by Friedel-Crafts acylation of terephthaloyl chloride or terephthaloyl fluoride with diphenyl ether in hydrogen fluoride as a solvent and with boron trifluoride as a catalyst, the polycondensation reaction being carried out by a method in which the reaction mixture is a homogeneous solution.

    摘要翻译： 含有结构单元“IMAGE”的聚醚酮具有完全线性的结构，在390℃至420℃的加工过程中是热稳定的且没有交联反应。它们通过Friedel-Crafts酰化制备，对苯二甲酰氯或对苯二甲酰 氟化氢与二苯基醚在氟化氢作为溶剂中，三氟化硼作为催化剂，缩聚反应通过反应混合物为均匀溶液的方法进行。