PROCESS FOR PRODUCING 1,4- BUTANEDIOL BY HYDROGENATING DIALKYL MALEATE IN MIXED LIQUID/VAPOR PHASE
    1.
    发明申请
    PROCESS FOR PRODUCING 1,4- BUTANEDIOL BY HYDROGENATING DIALKYL MALEATE IN MIXED LIQUID/VAPOR PHASE 有权
    通过在混合液体/蒸气相中氢化二烷基马来酸生产1,4-丁二醇的方法

    公开(公告)号:US20140316146A1

    公开(公告)日:2014-10-23

    申请号:US14358863

    申请日:2011-11-25

    摘要: A process for the production of 1,4-butanediol and tetrahydrofuran by catalytic hydrogenation of dialkyl maleates includes the following steps: a) hydrogenating a stream of dialkyl maleate in a first stage of reaction over suitable catalysts to produce dialkyl succinate; b) further hydrogenating the dialkyl succinate in a second stage of reaction, by using a different suitable catalyst, for producing mainly 1,4-butanediol, together with gamma-butyrolactone and tetrahydrofuran as co-products. In both stages of reaction the conditions, as hydrogen/organic feed ratio, pressure and temperature, are such to maintain the reactors in mixed liquid/vapor phase.

    摘要翻译: 通过马来酸二烷基酯的催化氢化生产1,4-丁二醇和四氢呋喃的方法包括以下步骤:a)在合适的催化剂上的第一反应阶段将马来酸二烷基酯流加氢以制备琥珀酸二烷基酯; b)在第二阶段的反应中,通过使用不同的合适的催化剂,以γ-丁内酯和四氢呋喃作为副产物主要生产1,4-丁二醇,进一步氢化琥珀酸二烷基酯。 在反应的两个阶段,作为氢/有机进料比,压力和温度的条件使得反应器保持在混合液/气相中。

    Biological process for purifying air in confined rooms and apparatus thereof
    2.
    发明授权
    Biological process for purifying air in confined rooms and apparatus thereof 失效
    有限空间净化空气的生物处理及其装置

    公开(公告)号:US08083837B2

    公开(公告)日:2011-12-27

    申请号:US12092824

    申请日:2006-11-03

    IPC分类号: B01D53/34

    摘要: A deputation process and corresponding apparatus for purification of the air of a closed environment characterized by indoor pollution, in which, in order to reduce the pollution, a water tank is provided that contains a multiplicity of active biomasses designed to absorb and metabolize the pollutant substances that are contained in the water and come from the air of the closed environment, and elements of water-air contact, designed precisely to transfer the pollutant substances from the closed environment into the water within the tank.

    摘要翻译: 用于净化室内污染特征的封闭环境的空气的代理流程和相应的装置,其中为了减少污染,提供了一个含有多个活性生物质的水箱,其设计用于吸收和代谢污染物质 包含在水中并来自封闭环境的空气以及水 - 空气接触元件,精确设计用于将污染物质从封闭环境转移到水箱内的水中。

    Mixtures of bitumen and polymer composition
    5.
    发明授权
    Mixtures of bitumen and polymer composition 失效
    沥青和聚合物组合物的混合物

    公开(公告)号:US5565510A

    公开(公告)日:1996-10-15

    申请号:US469243

    申请日:1995-06-06

    IPC分类号: C08L23/16 C08L89/00 C08L95/00

    CPC分类号: C08L95/00

    摘要: A bituminous mixture having improved physical properties is obtained by adding to a bitumen a polyphosphoric acid (I) containing phosphorus, calculated as P.sub.2 O.sub.5, in amount from 80% to 87% by weight, and a polymer composition (II) comprising (A) a propylene homopolymer or copolymer, (B) optionally an ethylene copolymer fraction insoluble in xylene at ambient temperature and (C) a copolymer fraction soluble in xylene at ambient temperature.

    摘要翻译: 通过向沥青中加入含有以P 2 O 5计算的磷的多磷酸(I),其量为80-87%(重量),和(A)的聚合物组合物(II),得到具有改善的物理性质的沥青混合物 丙烯均聚物或共聚物,(B)任选的环境温度下不溶于二甲苯的乙烯共聚物部分和(C)在环境温度下可溶于二甲苯的共聚物部分。