Production of Ziegler-Natta catalysts
    1.
    发明申请
    Production of Ziegler-Natta catalysts 失效
    齐格勒 - 纳塔催化剂的生产

    公开(公告)号:US20010016553A1

    公开(公告)日:2001-08-23

    申请号:US09760681

    申请日:2001-01-16

    IPC分类号: B01J027/138

    摘要: A process for producing a Ziegler-Natta catalyst, the process comprising reacting an organo magnesium compound with a halogenated compound to produce crystalline magnesium halide having an intense diffraction line in an x-ray spectrum thereof at lattice distance within the range of from 2.56 to 3.20 Angstroms and titanating the magnesium halide by mixing the magnesium halide with a titanium compound whereby the titanated magnesium halide hasp in an x-ray spectrum thereof, a halo appearing at a lattice distance within the range from 2.56 to 3.30 Angstroms.

    摘要翻译: 一种齐格勒 - 纳塔催化剂的制备方法,该方法包括使有机镁化合物与卤代化合物反应,以产生在x射线谱中具有强衍射线的晶格卤化镁,晶格卤化镁的晶格距离在2.56至3.20范围内 通过将卤化镁与钛化合物混合,从而钛化镁卤化物在其X射线光谱中,卤素以2.56至3.30埃的晶格距离出现,从而对卤化镁进行钛化处理。

    Process for preparing and using meso/racemic-[bis (indenyl)
ethane]zirconium dichloride compounds
    2.
    发明授权
    Process for preparing and using meso/racemic-[bis (indenyl) ethane]zirconium dichloride compounds 失效
    内消旋/外消旋 - [双(茚基)乙烷]二氯化锆化合物的制备和使用方法

    公开(公告)号:US6103656A

    公开(公告)日:2000-08-15

    申请号:US948224

    申请日:1997-10-09

    申请人: Abbas Razavi

    发明人: Abbas Razavi

    摘要: A process for the preparation of a meso/racemic-(bis(indenyl)ethane zirconium dichloride compound comprising (a) reacting zirconium tetrachloride with the solid reaction product of the bis(indenyl)ethane ligand with an alkyllithium in a solvent as reaction medium and (b) recovering a solid mixture of lithium chloride and meso/racemic composition of (bis(indenyl)ethane) zirconium dichloride, characterized in that the solvent used as reaction medium in a reaction (a) is an ether, pentane or a mixture thereof.

    摘要翻译: 一种制备内消旋/外消旋 - (双(茚基)乙烷二氯化锆化合物的方法,包括(a)使四氯化锆与双(茚基)乙烷配体的固体反应产物与烷基锂在溶剂中作为反应介质反应,和 (b)回收氯化锂和(双(茚基)乙烷)二氯化锆的内消旋/外消旋组合物的固体混合物,其特征在于在反应(a)中用作反应介质的溶剂是醚,戊烷或其混合物 。

    Preparing powder primer of thermoset binder and PVdF-compatible
thermoplastic
    3.
    发明授权
    Preparing powder primer of thermoset binder and PVdF-compatible thermoplastic 失效
    制备热固性粘合剂和PVdF兼容热塑性塑料的粉末底漆

    公开(公告)号:US6037412A

    公开(公告)日:2000-03-14

    申请号:US353516

    申请日:1999-07-14

    摘要: Powder compositions comprising about 5-15 wt % of PVdF-compatible thermoplastic resin, about 50-90 wt % of a thermosetting binder system, about 0-35 wt % of pigments and about 0-3 wt % of leveling agent are disclosed which are particularly suitable for use as primers with a later application of a pigmented PVdF-based top coating. Preferred compositions are based on an epoxy system containing about 8 wt % of PVdF or acrylic thermoplastic resin, 5-25 wt % of pigments and 0.7-1 wt % of leveling agent.

    摘要翻译: 公开了包含约5-15重量%的PVdF相容的热塑性树脂,约50-90重量%的热固性粘合剂体系,约0-35重量%的颜料和约0-3重量%的流平剂的粉末组合物,其为 特别适合用作具有以后应用着色的基于PVdF的顶涂层的底漆。 优选的组合物基于含有约8重量%的PVdF或丙烯酸热塑性树脂,5-25重量%的颜料和0.7-1重量%的流平剂的环氧体系。

    Bituminous compositions containing linear copolymers
    4.
    发明授权
    Bituminous compositions containing linear copolymers 失效
    含有线性共聚物的沥青组合物

    公开(公告)号:US6008277A

    公开(公告)日:1999-12-28

    申请号:US4230

    申请日:1998-01-08

    IPC分类号: C08L95/00

    CPC分类号: C08L95/00

    摘要: The present invention relates to bituminous compositions used for roofing and waterproofing membranes or material comprising asymmetrical linear polyvinyl aromatic-polydiene block copolymers having improved physical properties over broader ranges of service temperatures than those obtained from bituminous compositions prepared with symmetrical block copolymers of similar type.The asymmetry of the copolymer which is characterised by polyvinyl aromatic endblocks of at least two different molecular weights, one high and one low, ensures improved physical performance to roofing and waterproofing membranes made from such compositions.

    摘要翻译: 本发明涉及用于屋面和防水膜的沥青组合物或包含不对称直链聚乙烯基芳族聚二烯嵌段共聚物的材料,其具有比在相似类型的对称嵌段共聚物制备的沥青组合物得到的更宽的使用温度范围内具有改进的物理性能。 共聚物的不对称性,其特征在于具有至少两种不同分子量的一个高和一个低聚乙烯基芳香族末端嵌段,确保了由这种组合物制成的屋顶和防水膜的改善的物理性能。

    Lipase-producing Pseudomonas aeruginosa strain
    7.
    发明授权
    Lipase-producing Pseudomonas aeruginosa strain 失效
    脂肪酶生产铜绿假单胞菌菌株

    公开(公告)号:US5240851A

    公开(公告)日:1993-08-31

    申请号:US806266

    申请日:1991-12-13

    IPC分类号: C11D3/386 C12N9/20 C12N9/52

    摘要: A new lipase and a new protease, which can be produced by a new Pseudomonas strain, and methods of producing such lipase and protease using said strain, protease, or producing enzymatic additives for detergents whose main active component is the lipase of the invention. Further disclosed are detergent washing compositions containing the lipase and/or the protease or the enzymatic additives, and a washing process using said compositions.

    摘要翻译: 可以通过新的假单胞菌属菌株生产的新的脂肪酶和新的蛋白酶,以及使用所述菌株,蛋白酶或生产酶活性成分为本发明脂肪酶的洗涤剂的酶添加剂生产这种脂肪酶和蛋白酶的方法。 还公开了含有脂肪酶和/或蛋白酶或酶促添加剂的洗涤剂洗涤组合物,以及使用所述组合物的洗涤方法。

    Production of catalysts for olefin conversion
    8.
    发明授权
    Production of catalysts for olefin conversion 失效
    生产用于烯烃转化的催化剂

    公开(公告)号:US07384883B2

    公开(公告)日:2008-06-10

    申请号:US10691811

    申请日:2003-10-23

    IPC分类号: B01J29/04

    摘要: A process for producing a catalyst for olefin cracking, the process comprising the steps of providing an MFI-type crystalline silicate catalyst, heating the catalyst in steam to remove aluminum from the crystalline silicate framework and extracting aluminum from the catalyst by contacting the catalyst with a complexing agent for aluminum to remove from pores of the framework aluminum deposited therein during the steaming step thereby to increase the silicon/aluminum atomic ratio of the catalyst; and calcining the catalyst at elevated temperature.

    摘要翻译: 一种制备用于烯烃裂解的催化剂的方法,该方法包括以下步骤:提供MFI型结晶硅酸盐催化剂,在蒸汽中加热催化剂以从结晶硅酸盐骨架中除去铝,并从催化剂中提取铝,使催化剂与 在蒸汽步骤期间,铝的络合剂从沉积在其中的骨架铝的孔中除去,从而提高催化剂的硅/铝原子比; 并在高温下煅烧催化剂。

    Production of olefins
    9.
    发明授权
    Production of olefins 失效
    生产烯烃

    公开(公告)号:US06951968B1

    公开(公告)日:2005-10-04

    申请号:US09206218

    申请日:1998-12-05

    CPC分类号: C10G11/05

    摘要: A process for the production of olefins by catalytic cracking, the process comprising feeding a hydrocarbon feedstock containing at least one olefin of C4 or greater over a MFI-type crystalline silicate catalyst to produce an effluent containing at least one olefin of C2 or greater by catalytic cracking which is selective towards light olefins in the effluent, whereby for increasing the catalyst stability by limiting formation of coke thereon during the cracking process the catalyst has a silicon/aluminum atomic ratio of at least about 180, the olefin partial pressure is from 0.1 to 2 bars, and the feedstock contacts the catalyst at an inlet temperature of from 500 to 600° C. A process for increasing the stability of a MFI-type crystalline silicate catalyst, by limiting formation of coke on the catalyst, for catalytically cracking a hydrocarbon feedstock containing at least one olefin of C4 or greater to produce an effluent containing at least one olefin of C2 or greater, the process comprising pre-treating the catalyst so as to increase the silicon/aluminum atomic ratio thereof to a value of at least about 180 by heating the catalyst in steam and de-aluminating the catalyst by treating the catalyst with a complexing agent for aluminum.

    摘要翻译: 一种通过催化裂化生产烯烃的方法,该方法包括在MFI型结晶硅酸盐催化剂上进料含有至少一种C 4或更高的C 4以上的烯烃的烃原料以产生至少含有 通过对流出物中的轻质烯烃具有选择性的催化裂化产生C 2 O 2以上的一种烯烃,由此通过在裂化过程中限制焦炭的形成来提高催化剂的稳定性,催化剂具有硅/铝 原子比为至少约180,烯烃分压为0.1至2巴,并且原料在500-600℃的入口温度下接触催化剂。提高MFI型结晶硅酸盐的稳定性的方法 催化剂,通过限制催化剂上的焦炭的形成,用于催化裂化含有至少一种C 4或更高的烯烃的烃原料以产生含有至少一种烯烃的流出物 该方法包括预处理催化剂,以便通过在蒸汽中加热催化剂和除去催化剂而将硅/铝原子比增加至至少约180的值, 通过用铝络合剂处理催化剂来使催化剂镀铝。