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37 条记录 (耗时 0.025 秒)

    Ziegler-natta catalyst systems containing specific organosilicon compounds
    11.
    发明授权
    Ziegler-natta catalyst systems containing specific organosilicon compounds 失效
    含有特定有机硅化合物的齐格勒 - 纳塔催化剂体系

    公开(公告)号：US5773535A

    公开(公告)日：1998-06-30

    申请号：US814798

    申请日：1997-03-10

    申请人： Holger Friedrich ,  Stephan Huffer ,  Roland Hingmann

    发明人： Holger Friedrich ,  Stephan Huffer ,  Roland Hingmann

    IPC分类号： C08F4/642 ,  C08F4/646 ,  C08F4/649 ,  C08F4/654 ,  C08F4/656 ,  C08F10/00 ,  C08F110/06

    CPC分类号： C08F10/00 ,  C08F110/06

    摘要： Catalyst systems of the Ziegler-Natta type comprising as active constituents a) a titanium-containing solid component prepared using a titanium compound, a compound of magnesium, a halogenating agent and an electron donor component, b) an aluminum compound and c) as further electron donor component, an organosilicon compound of the formula (I) R.sup.1 R.sup.2 si(OR.sup.3).sub.2 (I) in which R.sup.1 is a C.sub.1 -C.sub.10 -alkyl radical or a C.sub.3 -C.sub.8 -cycloalkyl radical, R.sup.2 is a 2,4,4,6,6-pentamethylheptyl radical and R.sup.3 is a C.sub.1 -C.sub.8 -alkyl radical, are particularly suitable for the preparation of polymers of C.sub.2 -C.sub.10 -alk-1-enes.

    摘要翻译： 包含作为活性组分的齐格勒 - 纳塔型催化剂体系a）使用钛化合物，镁化合物，卤化剂和电子给体组分制备的含钛固体组分，b）铝化合物和c）进一步 电子给体组分，其中R 1是C 1 -C 10 - 烷基或C 3 -C 8环烷基的式（I）R 1 R 2si（OR 3）2（I）的有机硅化合物， 6,6-五甲基庚酰基和R 3是C 1 -C 8烷基，特别适用于制备C 2 -C 10 - 烷-1-烯的聚合物。

    Tanning agents and preservatives
    16.
    发明申请
    Tanning agents and preservatives 失效
    鞣制剂和防腐剂

    公开(公告)号：US20060053564A1

    公开(公告)日：2006-03-16

    申请号：US10543605

    申请日：2004-01-22

    申请人： Stephan Huffer ,  Gunter Sherr ,  Oliver Reese

    发明人： Stephan Huffer ,  Gunter Sherr ,  Oliver Reese

    IPC分类号： C14C3/00 ,  C14C1/08 ,  C14C9/00

    CPC分类号： C07D307/32 ,  C07D309/30 ,  C14C3/18 ,  C14C9/02

    摘要： Aqueous formulations are prepared by a process wherein at least one cyclic compound of the formula I is heated in the presence of water and of an acidic catalyst and, during or after the heating, H—X—R3 is at least partially separated off, where, in formula I, X is selected from oxygen, sulfur and N—R6, R3 and R6 are identical or different and are selected from C1-C12-alkyl, C3-C12-cycloalkyl, substituted or unsubstituted, C7-C13-aralkyl, C6-C14-aryl, substituted or unsubstituted, formyl, CO—C1-C12-alkyl, CO—C3-C12-cycloalkyl, substituted or unsubstituted, CO—C7-C13-aralkyl, CO—C6-C14-aryl, where, if X is N—R6, R3 and R6 may be linked to one another with formation of a ring; R1, R2 and R4 are identical or different and are selected from hydrogen, C1-C12-alkyl, C3-C12-cycloalkyl, substituted or unsubstituted, C7-C13-aralkyl, C6-C14-aryl, substituted or unsubstituted, it being possible in each case for two neighboring radicals to be linked to one another with formation of a ring; n is an integer from 1 to 4; R5 are identical or different and are selected from hydrogen, C1-C12-alkyl, C3-C12-cycloalkyl, substituted or unsubstituted, C7-C13-aralkyl, C6-C14-aryl, substituted or unsubstituted, it being possible for R5 to be linked to R4 or in each case two neighboring radicals R5 to be linked to one another with formation of a ring.

    摘要翻译： 水性制剂通过其中至少一种式I的环状化合物的方法制备

    Propylene polymers
    17.
    发明授权
    Propylene polymers 失效
    丙烯聚合物

    公开(公告)号：US5773516A

    公开(公告)日：1998-06-30

    申请号：US761341

    申请日：1996-12-06

    申请人： Stephan Huffer ,  Meinolf Kersting ,  Franz Langhauser ,  Rainer Alexander Werner ,  Stefan Seelert ,  Patrik Muller ,  Jurgen Kerth

    发明人： Stephan Huffer ,  Meinolf Kersting ,  Franz Langhauser ,  Rainer Alexander Werner ,  Stefan Seelert ,  Patrik Muller ,  Jurgen Kerth

    IPC分类号： C08F4/64 ,  C08F210/06 ,  C08F297/08 ,  C08F10/00

    CPC分类号： C08F297/083 ,  C08F210/06

    摘要： Propylene polymers which comprise from 25 to 97% by weight of a propylene polymer (I) containing from 0 to 15% by weight of copolymerized C.sub.2 -C.sub.10 -alk-1-enes and also comprise from 3 to 75% by weight of a further propylene polymer (II) containing from 15 to 80% by weight of copolymerized C.sub.2 -C.sub.10 -alk-1-enes, are obtainable by two-stage polymerization of propylene and C.sub.2 -C.sub.10 -alk-1-enes in the presence of a Ziegler-Natta catalyst system which comprises a titanium-containing solid component a) comprising a compound of magnesium, a halogen, silica gel as support and a carboxylic ester as electron donor compound, and also as cocatalysts an aluminum compound b) and a further electron donor compound c), where, in a first polymerization stage, propylene is polymerized in the presence or absence of further C.sub.2 -C.sub.10 -alk-1-enes at from 50.degree. to 100.degree. C., pressures in the range from 15 to 40 bar and a mean residence time of from 0.5 to 5 hours and subsequently, in a second polymerization stage, a mixture of propylene and further C.sub.2 -C.sub.10 -alk-1-enes is polymerized at from 30.degree. to 100.degree. C., pressures in the range from 15 to 40 bar and mean residence times of from 0.5 to 5 hours onto the propylene polymer obtained from the first polymerization stage, and the silica gel used as support for the titanium-containing solid component has a mean particle diameter of from 5 to 200 .mu.m, a mean particle diameter of the primary particles of from 1 to 10 .mu.m and voids or channels having a mean diameter of from 1 to 10 .mu.m, which voids or channels have a macroscopic volume as a proportion of the total particle in the range from 5 to 20%.

    摘要翻译： 丙烯聚合物，其包含25至97重量％的含有0至15重量％的共聚的C 2 -C 10 - 烷-1-烯的丙烯聚合物（I），并且还包含3至75重量％的另外 含有15-80％（重量）共聚的C 2 -C 10 - 烷-1-烯的丙烯聚合物（II）可以通过在齐格勒（Ziegler）存在下丙烯和C 2 -C 10 - 烷-1-烯的两步聚合来获得 -Natta催化剂体系，其包含含钛固体组分a），其包含镁，卤素，硅胶作为载体的化合物和作为电子给体化合物的羧酸酯，以及作为助催化剂的铝化合物b）和另外的电子给体 化合物c），其中在第一聚合阶段，丙烯在存在或不存在另外的C 2 -C 10 - 烷-1-烯的情况下在50至100℃下聚合，压力为15至40巴 平均停留时间为0.5至5小时，随后在第二聚合阶段中混合 丙烯和其他C 2 -C 10 - 烷-1-烯的反应在30℃至100℃下聚合，压力为15至40巴，平均停留时间为0.5至5小时，得到所得丙烯聚合物 从第一聚合阶段，用作含钛固体成分的载体的硅胶的平均粒径为5〜200μm，一次粒子的平均粒径为1〜10μm，空隙 或平均直径为1至10μm的通道，该空隙或通道的宏观体积占总颗粒的比例在5至20％的范围内。

    Method for Producing Leather
    19.
    发明申请
    Method for Producing Leather 审中-公开
    生产皮革的方法

    公开(公告)号：US20090172890A1

    公开(公告)日：2009-07-09

    申请号：US11995511

    申请日：2006-07-06

    申请人： Stephan Huffer ,  Stefan Schroeder ,  Philippe Lamalle ,  Volker Bach

    发明人： Stephan Huffer ,  Stefan Schroeder ,  Philippe Lamalle ,  Volker Bach

    IPC分类号： C14C1/08

    CPC分类号： C14C3/16

    摘要： Process for the production of leather, wherein, after liming, deliming and, if appropriate, pickling, animal hides are pretanned or tanned with a mixture of compounds comprising(a) at least one organic tanning agent and (b) a mixture of (b1) at least one C3-C12-dicarboxylic acid (b2) and at least one further acidic compound selected from C1-C3-mono- or C3-C12-dicarboxylic acids, or salts thereof.

    摘要翻译： 用于生产皮革的方法，其中，在石灰化，分层，如果适用的酸洗后，用包含（a）至少一种有机鞣剂和（b）（b1）的混合物的混合物混合物将动物皮革预先或鞣制 ）至少一种C 3 -C 12二羧酸（b2）和至少一种选自C 1 -C 3 - 单 - 或C 3 -C 12 - 二羧酸的其它酸性化合物或其盐。