Polymerisation of vinyl chloride
    1.
    发明公开

    公开(公告)号:EP0821008A3

    公开(公告)日:1998-03-04

    申请号:EP97118945.1

    申请日:1990-12-28

    IPC分类号: C08F2/00 C09D161/04 C08F14/06

    CPC分类号: C08F14/06 C08F2/004

    摘要: In a novel method of homo- or copolymerization of vinyl chloride, a specified coating agent is applied on the surfaces of the portions which will become into contact with the vinyl chloride monomer during the polymerization process. The coating agent is in a form of an aqueous solution of a modified condensation product of phenol and aldehyde, the pH of the solution being adjusted in a range that the product is dissolved at an ambient temperature upon coating of the solution and separates out of the solution upon being heated on the surfaces. The wall surface of the polymerization tank and the like is then coated with a thin film of the coating agent having a uniform thickness and being strongly adhered to the wall surface, thereby providing an excellent effect of preventing adhesion of the product polymer to the wall surface.

    A process of producing an ABS resin, an ABS resin, and an ABS-polycarbonate resin composition making use of the same
    2.
    发明公开
    A process of producing an ABS resin, an ABS resin, and an ABS-polycarbonate resin composition making use of the same 失效
    一种用于制备ABS树脂,ABS树脂和ABS-聚碳酸酯树脂组合物中使用该方法

    公开(公告)号:EP0810242A2

    公开(公告)日:1997-12-03

    申请号:EP97303666.8

    申请日:1997-06-02

    摘要: A process for the continuous production of an ABS resin includes a step of polymerizing 100 parts by weight of a monomer component, which is composed of a styrene monomer and an acrylonitrile monomer or of their mixture and a vinyl monomer copolymerizable with at least one of the monomers, in the presence of 4 to 50 parts by weight of a rubbery polymer by continuous bulk and/or continuous solution polymerization to form a polymer of the monomer component as a continuous phase and particles of the rubbery polymer as a dispersed phase. The polymerization step comprises at least two substeps, one being a first-stage substep of forming particles of the rubbery polymer and the other a second-stage substep of adjusting the particle sizes of the particles. The first-stage substep is conducted in a polymerization system making use of a plug flow reactor or a batch polymerization reactor, and conducts polymerization at least until the particles are formed in the polymerization mixture. The second-stage substep increases the amount of the monomer component converted into the polymer compared with that in the particle forming substep, and reduces the particles size. A polycarbonate-ABS resin composition is also disclosed.

    摘要翻译: 一种用于连续生产的ABS树脂的方法包括和其由苯乙烯单体和丙烯腈单体的或它们的混合物的按重量计的单体成分的聚合将100份的步骤,所有与该至少一种的乙烯基单体共聚 在存在4〜50重量份的橡胶状聚合物通过连续本体和/或连续溶液聚合的单体,以形成单体成分的聚合物作为连续相和橡胶状聚合物作为分散相的颗粒。 聚合步骤包括至少两个子步骤,一个是在形成橡胶状聚合物和所述其他一个调整粒子的粒径的第二级子步骤的颗粒的第一阶段的子步骤。 第一级子步骤中进行在聚合体系中利用活塞流反应器或间歇式聚合反应器的,并且至少直到颗粒在聚合混合物形成进行聚合。 第二级子步骤提高单体组分转变成聚合物与“那个”在颗粒形成子步骤,并降低了颗粒尺寸相比的量。 因此,一个聚碳酸酯-ABS树脂组合物游离缺失盘。

    Transparent, rubber-modified styrene resin and production process thereof
    6.
    发明公开
    Transparent, rubber-modified styrene resin and production process thereof 失效
    透明的橡胶改性苯乙烯树脂,以及它们的制备方法

    公开(公告)号:EP0703252A3

    公开(公告)日:1997-07-30

    申请号:EP95306530.7

    申请日:1995-09-15

    摘要: A transparent, rubber-modified styrene resin comprises 70 to 96 parts by weight of a copolymer formed of 20 to 70 wt.% of styrene monomer units and 30 to 80 wt.% of alkyl (meth)acrylate monomer units and 4 to 30 parts by weight of a rubbery polymer. The rubbery polymer is dispersed in the copolymer as particles having an average particle size of 0.1 to 2.0 µm. At least 70 wt.% of the rubbery polymer is a styrenebutadiene block copolymer which is formed of 5 to 50 wt.% of styrene units and 50 to 95 wt.% of butadiene units, has a viscosity in a range of 3 to 60 mPa.s when measured as a 5 wt.% styrene solution at 25°C and possesses a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) in a range of 1.0 to 1.8. The copolymer and the rubbery polymer have substantially the same refractive index. Also disclosed is a production process of the transparent, rubber-modified styrene resin, which comprises polymerizing a styrene monomer and an alkyl (meth)acrylate to a high degree of polymerized conversion in the presence of the rubbery polymer so that the rubbery polymer is formed into particles while allowing the copolymer to occur with substantially the same refractive index as the rubbery polymer.

    Preparation process for aromatic mononitro compounds
    7.
    发明公开
    Preparation process for aromatic mononitro compounds 失效
    Herstellungsverfahrenfüraromatische Mononitroverbindungen

    公开(公告)号:EP0779270A1

    公开(公告)日:1997-06-18

    申请号:EP96120082.1

    申请日:1996-12-13

    摘要: An improved preparation process for an aromatic mononitro compound comprising reacting an aromatic compound with mixed acid consisting of nitric acid, sulfuric acid or phosphoric acid and water, wherein these flow to react with each other in a reactor comprising a tube inside of which more than one twisted tabular members are aligned in sequence in a manner that a front margin of a twisted tabular member is substantially perpendicular to an back margin of the preceding member, can resolve a number of problems such as an inadequate mixing efficiency, reduction of a reaction rate, associated voluminal increase/complication of a reactor and difficulty in securing safety as well as provide the aromatic mononitro compound with minimal amount of by-products in a considerably short period.

    摘要翻译: 一种改进的芳族单硝基化合物的制备方法,包括使芳族化合物与硝酸,硫酸或磷酸和水组成的混合酸反应,其中这些流在反应器中彼此反应,该反应器包括一个以上的管 扭曲的片状构件按照使得扭曲的片状构件的前缘基本上垂直于前一构件的后缘的方式依次排列,可以解决许多问题,例如不充分的混合效率,降低反应速率, 相关的体积增加/反应器的并发症和难以确保安全性,并且在相当短的时间内提供芳香族单硝基化合物与最少量的副产物。

    Degradable aliphatic-aromatic block polyester carbonates and their preparation
    8.
    发明公开
    Degradable aliphatic-aromatic block polyester carbonates and their preparation 失效
    Degradierbare aliphatisch-aromatische块聚酯碳酸酯和Herstellung

    公开(公告)号:EP0778306A2

    公开(公告)日:1997-06-11

    申请号:EP96119570.8

    申请日:1996-12-05

    CPC分类号: C08G63/64 C08G81/00

    摘要: A degradable copolymer obtained by heat-dehydration reaction of aromatic polycarbonate and aliphatic polyester in the presence of a catalyst, has degradability which cannot be exhibited by common aromatic polycarbonate, transparency equal to polycarbonate, thermal resistance which cannot be exhibited by common aliphatic polyester, melt flowability superior to common aromatic polycarbonate and other excellent characteristics, and thus can be widely used for processed articles which require severe properties.

    摘要翻译: 通过芳族聚碳酸酯和脂肪族聚酯在催化剂存在下进行热脱水反应获得的可降解共聚物具有普通芳族聚碳酸酯不能显示的降解性,聚碳酸酯的透明度,普通脂肪族聚酯不能显示的耐热性,熔融 流动性优于普通芳族聚碳酸酯等优异特性,因此可广泛用于需要严格性能的加工制品。

    Photovoltaic device
    9.
    发明公开
    Photovoltaic device 失效
    光伏器件

    公开(公告)号:EP0729190A3

    公开(公告)日:1997-05-21

    申请号:EP96301217.4

    申请日:1996-02-23

    摘要: A thin microcrystalline silicon semiconductor film suitable for use as an intrinsic semiconductor layer in an amorphous silicon solar cell or the like comprises an amorphous phase with crystallites contained therein in the form of a prismatic or conical crystallite aggregate phase. Additional crystallites may be dispersed as individual crystallites in the amorphous phase. In the thin film, the crystalline fraction may preferably range from 5 to 80% and the crystallite size may preferably range from 2 to 1,000 nm. This thin film can be formed by first forming an initial film to a thickness in a range of from 2 nm to 100 nm at a deposition rate of from 0.01 nm/sec to 0.1 nm/sec on a substrate and then forming a principal film at a deposition rate of from 0.1 nm/sec to 2 nm/sec, for example, in accordance with RF plasma CVD.

    摘要翻译: 适合用作非晶硅太阳能电池等中的本征半导体层的薄微晶硅半导体膜包括非晶相,其中包含微晶,其形式为棱柱或圆锥形微晶聚集体相。 另外的微晶可以作为单独的微晶分散在非晶相中。 在薄膜中,结晶部分可以优选在5至80%的范围内,微晶尺寸可以优选在2至1,000nm的范围内。 该薄膜可以如下形成:首先在基板上以0.01nm / sec至0.1nm / sec的沉积速率将初始膜形成至2nm至100nm范围内的厚度,然后形成主膜 例如,根据RF等离子体CVD,沉积速率为0.1nm / sec至2nm / sec。

    Olefin polymerization catalyst system
    10.
    发明公开
    Olefin polymerization catalyst system 失效
    脱乙酰壳多糖体系

    公开(公告)号:EP0773237A1

    公开(公告)日:1997-05-14

    申请号:EP96308048.6

    申请日:1996-11-06

    IPC分类号: C08F10/00 C08F4/02 C08F4/602

    摘要: An olefin polymerization catalyst system comprises an organic transition metal compound and a support, the organic transition metal compound being soluble in an inert organic solvent and the support, which is insoluble in the solvent, comprises an organic high molecular compound which contains a specific carbonyl-having group. The catalyst system polymerizes an olefin in a high activity, provides polymer with high stereoregularity, prevents adhesion or fouling of either the polymer generated in the course of polymerization or an organic aluminum oxy compound on the inner wall of a reactor, leads to high bulk density of the polymer and significantly reduced levels of fisheye and/or gel generation on the processed item. High productivity, and high quality products are attainable when using the catalyst.

    摘要翻译: 烯烃聚合催化剂体系包括有机过渡金属化合物和载体,有机过渡金属化合物可溶于惰性有机溶剂中,不溶于溶剂的载体包含有机高分子化合物,其含有特定的羰基 - 有组。 催化剂体系以高活性聚合烯烃,提供具有高立构规整性的聚合物,防止在聚合过程中产生的聚合物或反应器内壁上的有机铝氧化合物的粘附或结垢导致高堆积密度 的聚合物,并且显着降低了处理物品上的鱼眼和/或凝胶产生的水平。 使用催化剂时可以获得高生产率和高质量的产品。