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    • 4. 发明授权
      US5777036A Particulate graft copolymers and thermoplastic molding materials containing them and having improved colorability 失效
    • Particulate graft copolymers and thermoplastic molding materials containing them and having improved colorability
    • 颗粒状接枝共聚物和含有它们的热塑性成型材料并具有改善的着色性
    • US5777036A
    • 1998-07-07
    • US839704
    • 1997-04-15
    • Wolfgang Fischer , Jurgen Koch , Graham Edmund McKee
    • Wolfgang Fischer , Jurgen Koch , Graham Edmund McKee
    • C08F285/00 , C08L25/12 , C08L51/00 , C08L51/04
    • C08L25/12 , C08F285/00 , C08L51/00
    • Particulate graft copolymers A) are composed of a.sub.1) from 5 to 70% by weight, based on A), of a grafting base having a glass transition temperature of less than 10.degree. C. and based on a.sub.11) from 50 to 99.94% by weight, based on a.sub.1), of at least one alkyl acrylate where the alkyl radical is of 1 to 30 carbon atoms, a.sub.12) from 0 to 49.9% by weight, based on a.sub.1), of a further monounsaturated monomer copolymerizable with b.sub.11) and a.sub.13) from 0.01 to 5% by weight, based on a.sub.1), of polyfunctional crosslinking monomers, a.sub.2) from 20 to 85% by weight, based on A), of a stage polymerized in the presence of component a.sub.1) and comprising a.sub.21) from 95 to 100% by weight, based on a.sub.2), of at least one monomer having a refractive index n.sub.D.sup.20 of more than 1.51 and a.sub.22) from 0 to 5% by weight, based on a.sub.2), of a polyfunctional, crosslinking monomer and a.sub.3) from 10 to 50% by weight, based on A), of at least one further stage polymerized in the presence of the product obtained after the preparation of a.sub.2) and comprising a.sub.31) from 50 to 95% by weight, based on a.sub.3), of a vinylaromatic monomer and a.sub.32) from 5 to 50% by weight, based on a.sub.3), of polar, copolymerizable comonomers selected from the group consisting of acrylonitrile, methacrylonitrile, esters of (meth)acrylic acid where the alkyl radical is of 1 to 20 carbon atoms, maleic anhydride, (meth)acrylamide and/or vinyl alkyl ethers where the alkyl radical is of 1 to 8 carbon atoms.
    • 颗粒状接枝共聚物A）由a1）5-70重量％（基于A）组成的玻璃化转变温度低于10℃的接枝碱和基于a）为50-99.94％的接枝基 至少一种烷基丙烯酸酯，其中烷基为1至30个碳原子的重量，a12）基于a1）0至49.9重量％的另外的单不饱和单体可与b11）和 a13）0.01至5重量％，基于a1）的多官能交联单体，a2）基于A）的20至85重量％的在组分a1）存在下聚合的阶段，并且包含a 21） 基于a2）的至少一种折射率nD20大于1.51的单体和基于a2）的0至5重量％的至少一种单体为95至100重量％的多官能交联单体和 a3）基于A）的10至50重量％的至少一个另外的阶段在制备a2）和co之后获得的产物存在下聚合 令人惊奇的a31）基于a3）为50〜95重量％的乙烯基芳族单体和a32）基于a3）5〜50重量％的极性共聚合共聚单体，其选自丙烯腈，甲基丙烯腈 （甲基）丙烯酸，其中烷基为1-20个碳原子的酯，马来酸酐，（甲基）丙烯酰胺和/或其中烷基为1-8个碳原子的乙烯基烷基醚。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 10. 发明授权
      US4387263A Process for mixing olefins 失效
    • Process for mixing olefins
    • 烯烃混合方法
    • US4387263A
    • 1983-06-07
    • US378425
    • 1982-05-14
    • Wilhelm Vogt , Hermann Glaser , Jurgen Koch
    • Wilhelm Vogt , Hermann Glaser , Jurgen Koch
    • C07C1/20 , C07C1/24
    • C07C1/20 , C07C2529/40 , Y02P30/42
    • The disclosure relates to a process for making C.sub.2 to C.sub.4 -olefins from gas mixtures containing methanol, dimethylether and optionally steam in the presence of catalysts at temperatures of 250.degree. to 500.degree. C. under pressure of 0.1 to 6 bars, unreacted feed material being recycled. To this end, the disclosure provides for a mixture containing methanol and water in a ratio by volume of 1:(0 up to 2) to be evaporated and reacted in a reactor having the catalyst placed therein; for the reaction gases to be partially condensed by cooling them and separated, in a separator, into three phases; for the oil phase consisting of higher aliphates and aromates to be removed and for the remaining aqueous phase and gas phase to be water-scrubbed in a scrubbing column under pressures of 1 to 40 bars; for a gaseous hydrocarbon mixture containing predominantly C.sub.2 to C.sub.4 -olefins to be removed overhead and separated into its components; for an aqueous phase containing unreacted methanol and intermediarily formed dimethylether to be removed from the base portion of the scrubbing column; for the methanol and dimethylether to be distilled off in a stripping column and recycled into the reactor; and for the water to be removed from the base portion of the stripping column.
    • 本公开涉及一种在0.005至500℃的温度下，在0.1至6巴的压力下，在催化剂存在下，在甲醇，二甲醚和任选蒸汽的气体混合物中制备C 2至C 4烯烃的方法，未反应的原料为 回收。 为此，本公开内容提供了以1：（0至2）的体积比的甲醇和水的混合物进行蒸发并在其中放置有催化剂的反应器中反应; 反应气体通过冷却而被部分冷凝，并在分离器中分离成三相; 用于由更高的脂肪族和芳烃被除去的油相和剩余的水相和气相在1至40巴的压力下在洗涤塔中进行水洗; 对于主要含有C2至C4-烯烃的气态烃混合物，其顶部除去并分离成其组分; 对于含有未反应的甲醇和中间形成的二甲醚的水相从洗涤塔的基部除去; 甲醇和二甲基醚在汽提塔中蒸馏除去，再循环到反应器中; 并且用于从汽提塔的基部除去水。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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