Preparation of lower polyhydric alcohols
    13.
    发明授权
    Preparation of lower polyhydric alcohols 失效
    低聚多糖的制备

    公开(公告)号:US5210335A

    公开(公告)日:1993-05-11

    申请号:US912034

    申请日:1992-07-09

    CPC分类号: C07C29/00 C12C11/02 Y02P20/52

    摘要: Lower polyhydric alcohols are prepared by catalytic hydrogenolysis of sucrose in an aqueous solution by using a catalyst whose active material essentially consists offrom 0 to 100% by weight of cobalt,from 0 to 85% by weight of copper andfrom 0 to 80% by weight of manganese,the percentages being based on the content of the metals.

    摘要翻译: 低级多元醇通过使用其活性物质基本上由0至100重量%的钴,0至85重量%的铜和0至80重量%的铜的催化剂在水溶液中催化氢解蔗糖来制备, 锰的重量,百分比基于金属的含量。

    Preparation of 2,2-disubstituted pentane-1,5-diamines
    14.
    发明授权
    Preparation of 2,2-disubstituted pentane-1,5-diamines 失效
    2,2-取代的戊烷-1,5-二胺的制备

    公开(公告)号:US5166443A

    公开(公告)日:1992-11-24

    申请号:US676086

    申请日:1991-03-17

    CPC分类号: C07C209/48 C07C211/09

    摘要: A process for the preparation of a 2,2-disubstituted pentane-1,5-diamine of the formula I ##STR1## where R.sup.1 and R.sup.2, independently of one another, are C.sub.1 - to C.sub.10 -alkyl or C.sub.2 - to C.sub.10 -alkenyl or together are a C.sub.4 - to C.sub.7 -alkylene chain which is unsubstituted or monosubstituted to pentasubstituted by C.sub.1 - to C.sub.4 -alkyl, from a 2,2-disubstituted 4-cyanobutanal of the formula II ##STR2## where R.sup.1 and R.sup.2 are as defined above, comprises, in two spatially separate reaction spaces,a) reacting the 4-cyanobutanal of the formula II, in a first reaction space, with excess ammonia on an acidic heterogeneous catalyst at from 20.degree. to 150.degree. C. and at from 15 to 500 bar, andb) hydrogenating the resultant reaction product, in a second reaction space, using excess hydrogen in the presence of excess ammonia on a catalyst containing cobalt, nickel, ruthenium and/or another noble metal, if desired with a basic component or on a basic or neutral carrier, at from 60.degree. to 150.degree. C. and at from 50 to 500 bar.

    摘要翻译: 制备式I(I)的2,2-二取代戊烷-1,5-二胺的方法,其中R 1和R 2彼此独立地为C 1至C 10烷基或C 2至 C10链烯基或一起是未被取代或被C1至C4-烷基单取代至五取代的C 4 -C 7亚烷基链,其由式II(II)的2,2-二取代4-氰基丁醛代替,其中 R1和R2如上定义,在两个空间上分开的反应空间中包含a)在第一反应空间中使式II的4-氰基丁醛与过量的氨在20-150℃的酸性多相催化剂上反应 和b)在第二反应空间中,在过量的氨存在下,使用过量的氢在含有钴,镍,钌和/或其它贵金属的催化剂上氢化所得反应产物, 如果需要,可以使用碱性组分或碱性或中性载体,在60至150℃和50至50℃ 500吧。

    Polyurethane-urea elastomers and their production
    16.
    发明授权
    Polyurethane-urea elastomers and their production 失效
    聚氨酯 - 尿素弹性体及其生产

    公开(公告)号:US4208507A

    公开(公告)日:1980-06-17

    申请号:US922317

    申请日:1978-07-06

    IPC分类号: C08G18/10 C08G18/75 C08G18/32

    CPC分类号: C08G18/75 C08G18/10

    摘要: Polyurethane-urea elastomers with improved temperature characteristics, in particular improved low temperature properties, good mechanical properties over a large temperature range and excellent resistance to hydrolysis, are obtained by reacting(A) a prepolymer, possessing cycloaliphatic NCO groups, which has been prepared from essentially difunctional polyhydroxy compounds and organic diisocyanates possessing at least one NCO group bonded to a cycloaliphatic structure, these reactants being used so as to give a ratio of total hydroxyl: NCO groups of from 1:1.2 to 1:10, with(B) 3,3',5,5'-tetramethyl-4,4'-diamino-diphenylmethane, A and B being reacted in the molar ratio of from 1:0.8 to 1:1.2.

    摘要翻译: 通过使(A)具有环脂族NCO基团的预聚物(其由以下制备)制备的具有改进的温度特性,特别是改进的低温性能,在大温度范围内的良好机械性能和优异的抗水解性的聚氨酯 - 脲弹性体 基本上是双官能多羟基化合物和具有至少一个与脂环族结构键合的NCO基团的有机二异氰酸酯,使用这些反应物,以使总羟基:NCO基团的比例为1:1.2至1:10,与(B)3 ,3',5,5'-四甲基-4,4'-二氨基 - 二苯基甲烷,A和B的摩尔比为1:0.8至1:1.2。

    Selective hydrogenation of aromatic groups in the presence of epoxy
groups
    17.
    发明授权
    Selective hydrogenation of aromatic groups in the presence of epoxy groups 失效
    在环氧基存在下选择性氢化芳基

    公开(公告)号:US5530147A

    公开(公告)日:1996-06-25

    申请号:US422905

    申请日:1995-04-17

    摘要: A process for the selective hydrogenation of aromatic groups of organic molecules carrying at least one aromatic group and one epoxy group with hydrogen in the presence of a ruthenium-containing catalyst, in which a homogeneous ruthenium catalyst is used which can be prepared by reducing the ruthenium compound with a metal having a redox potential of from -0.75 to 2.5 V, a boron hydride, an aluminum hydride, an aluminum alkyl compound, a lithium alkyl compound, or a lithium aryl compound in the presence of an ether.

    摘要翻译: 在含钌催化剂的存在下,使用含有钌的催化剂存在下,用氢气携带至少一个芳基和一个环氧基的有机分子的芳族基团的选择性氢化的方法,其中使用均匀的钌催化剂,其可以通过还原钌来制备 在乙醚存在下与氧化还原电位为-0.75至2.5V的金属,硼氢化物,氢化铝,烷基铝化合物,烷基锂化合物或锂芳基化合物的化合物。

    Polyoxypropylene-polyols and polyoxypropylene-polyoxyethylene-polyols
containing hydroxyl groups
    18.
    发明授权
    Polyoxypropylene-polyols and polyoxypropylene-polyoxyethylene-polyols containing hydroxyl groups 失效
    含有羟基的聚氧丙烯 - 多元醇和聚氧丙烯 - 聚氧乙烯 - 多元醇

    公开(公告)号:US5340916A

    公开(公告)日:1994-08-23

    申请号:US966228

    申请日:1992-10-26

    摘要: The present invention relates to a process for the preparation of a hard foam containing urethane groups or urethane and isocyanurate groups by the polyisocyanate polyaddition process, by reactinga) a polyoxypropylene- or polyoxyethylene-polyoxypropylene-polyol containing secondary hydroxyl groups, having a functionality of from 3.5 to 4.3, a hydroxyl number of from 350 to 650 and a viscosity of from 500 to 2,500 mPa.multidot.s at 23.degree. C. and prepared by anionic polymerization of 1,2-propylene oxide or ethylene oxide and 1,2-propylene oxide onto an initiator molecule mixture containing, based on the total weight,a1) from 40 to 80% by weight of a hexanetetrol,a2) from 1 to 30% by weight of a hexanetriol,a3) from 0 to 35% by weight of glycerol anda4) from 0 to 15% by weight of sorbitol or mannitol, or a mixture thereof,b) optionally, a low-molecular-weight chain extender and/or crosslinking agent withc) an organic, modified or unmodified polyisocyanate; in the presence ofd) a blowing agent,e) a catalyst and, optionally,f) assistants and/or additives, and novel polyoxypropylene-polyols and polyoxyethylene-polyoxypropylene-polyols which can be used for this purpose.

    摘要翻译: 本发明涉及通过使a)具有仲羟基的聚氧丙烯或聚氧乙烯 - 聚氧丙烯 - 多元醇,具有官能度的官能度的方法,通过多异氰酸酯加聚方法制备含有氨基甲酸酯基团或聚氨酯和异氰脲酸酯基团的硬质泡沫的方法, 3.5至4.3,羟值为350至650,在23℃下的粘度为500至2500mPax,并通过将1,2-环氧丙烷或环氧乙烷和1,2-环氧丙烷阴离子聚合制备到 包含基于总重量的起始分子混合物,a1)为40至80重量%的己烷四醇,a2)1至30重量%的己烷三醇,a3)0至35重量%的甘油和 a4)0至15重量%的山梨糖醇或甘露醇或其混合物,b)任选的低分子量增链剂和/或交联剂,c)有机,改性或未改性的多异氰酸酯; 在d)发泡剂的存在下,e)可以用于此目的的催化剂和任选的f)助剂和/或添加剂,以及新的聚氧丙烯 - 多元醇和聚氧乙烯 - 聚氧丙烯 - 多元醇。

    Process for the preparation of lower polyhydric alcohols
    20.
    发明授权
    Process for the preparation of lower polyhydric alcohols 失效
    制备低聚多醇的方法

    公开(公告)号:US5107018A

    公开(公告)日:1992-04-21

    申请号:US567125

    申请日:1990-08-13

    申请人: Ludwig Schuster

    发明人: Ludwig Schuster

    IPC分类号: C07C29/00 C07C29/141

    CPC分类号: C07C29/141 Y02P20/52

    摘要: A process for the preparation of lower polyhydric alcohols by catalytic hydrogenation of aqueous saccharose solutions at elevated temperature and pressure using a catalyst of which the catalytically active material essentially contains the metals cobalt, copper and manganese in the following concentrations, the total weight of said metals being standardized as 100%:from 0 to 100% w/w of cobalt,from 0 to 85% w/w of copper andfrom 0 to 80% w/w of manganese,this said metal content of said catalytically active material comprising either cobalt alone or at least two of said metals, which active material may also contain added inorganic poly acids and/or heteropoly acids, wherein from 0.01 to 5% w/w of one or more base-acting metal compounds of metals from the first and second main groups and from group IIIA of the Periodic Table are added to the saccharose solution to be hydrogenated.

    摘要翻译: 一种通过使用其催化活性物质基本上含有如下浓度的金属钴,铜和锰的催化剂在升高的温度和压力下催化氢化蔗糖溶液来制备低级多元醇的方法,所述金属的总重量 标准化为100%:0至100%w / w的钴,0至85%w / w的铜和0至80%w / w的锰,所述催化活性材料的所述金属含量包括 钴或至少两种所述金属,该活性材料还可以含有添加的无机多元酸和/或杂多酸,其中0.01至5%w / w的一种或多种碱作用金属化合物来自第一和/ 将第二主要组和周期表IIIA组加入待氢化的蔗糖溶液中。