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    • 2. 发明授权
    • Electrically conductive porous synthetic polymeric compositions, method
for making same, and use thereof in an electrodialysis process
    • 导电多孔合成聚合物组合物,其制备方法及其在电渗析方法中的应用
    • US4652396A
    • 1987-03-24
    • US492071
    • 1983-05-06
    • Kenneth B. Wagener
    • Kenneth B. Wagener
    • B01D69/14C08J5/22C08J9/40H01B1/12H01B1/00
    • C08J9/405B01D69/141C08J5/2231H01B1/125C08J2323/12
    • There is disclosed a method for increasing the electrical conductivity of a porous synthetic polymeric material. The method comprises depositing an effective amount of a polyacetylene polymerization catalyst throughout the porous structure, subsequently exposing said material to acetylene under polymerization conditions, for a time sufficient to form polyacetylene within the porous structure, and finally doping the resultant product with a conductivity modifying amount of either an electron donor dopant or an electron acceptor dopant.There is also disclosed an improved electrodialysis process wherein an electrolyte solution is placed between opposite faces of two membranes, the first membrane being an anion exchange membrane and the second membrane being a cation exchange membrane, while being subjected to a primary electric field causing the cations in the electrolyte to pass through the cation exchange membrane and the anions to pass through the anion exchange membrane. The improvement comprises using as the cation and anion exchange membranes electrically conductive membranes on which secondary negative and positive potentials are induced, respectively, the strength of the secondary potential being less than that induced by the primary electric field.
    • 公开了一种增加多孔合成聚合物材料的导电性的方法。 该方法包括在整个多孔结构中沉积有效量的聚乙炔聚合催化剂,随后在聚合条件下将所述材料暴露于乙炔足够长的时间,以在多孔结构内形成聚乙炔,最后以导电性改性量 电子给体掺杂剂或电子受体掺杂剂。 还公开了一种改进的电渗析方法,其中将电解质溶液放置在两个膜的相对表面之间,第一膜是阴离子交换膜,第二膜是阳离子交换膜,同时经受一次电场,导致阳离子 在电解液中通过阳离子交换膜和阴离子通过阴离子交换膜。 该改进包括分别使用作为阳离子和阴离子交换膜导电二次负极和正电位的导电膜,次级电位的强度小于由初级电场引起的次级电势。
    • 3. 发明授权
    • Process for the separation of amides from nitriles
    • 从腈中分离酰胺的方法
    • US4575434A
    • 1986-03-11
    • US656083
    • 1984-09-28
    • Dieter FrankLincoln D. MetcalfeJohn Y. G. Park
    • Dieter FrankLincoln D. MetcalfeJohn Y. G. Park
    • C07C255/02C07C67/00C07C253/00C07C253/34C07C255/06C07C120/08C07C121/16
    • C07C253/34
    • A process for the removal of impurities comprising amides from a solution comprising nitriles and the impurities. A reaction mixture is formed which includes the solution, a layered mineral comprising aluminum silicates having exchangeable alkaline or alkaline earth cations on the surfaces of the layers and an acid which has an acid strength sufficient to protonate the amides at amide protonation conditions, but in which the solubility of the salt of the acid and exchangeable cation at those conditions is such that the equilibrium of the protonation reaction is substantially in the direction of the amides remaining in a protonated form. The water content of the reaction mixture must be less than about 0.5 wt. % for substantially all of the reaction time. The reaction mixture is maintained for a sufficient time at the amide protonation conditions for protonation of the amides and exchange of the protonated amides and exchangeable cations to occur, the protonated amides adhering to the surfaces of the layers. Nitriles having a reduced content of impurities may then be separated from the reaction mixture. Effective means of separation are rotating drum vacuum filters, preferably two in series.
    • 从包含腈和杂质的溶液中除去包含酰胺的杂质的方法。 形成反应混合物,其包括溶液,包含在层的表面上具有可交换的碱土金属或碱土金属阳离子的硅酸铝的层状矿物和具有足以在酰胺质子化条件下质子化酰胺的酸强度的酸,但其中 在这些条件下,酸和可交换阳离子的盐的溶解度使得质子化反应的平衡基本上在以质子化形式保留的酰胺的方向上。 反应混合物的水含量必须小于约0.5wt。 %用于基本上所有的反应时间。 在酰胺质子化条件下将反应混合物保持足够的时间,以使酰胺质子化,并质子化的酰胺和可交换的阳离子交换发生,质子化的酰胺附着在层的表面上。 然后可以将具有降低的杂质含量的腈与反应混合物分离。 有效的分离方式是旋转鼓式真空过滤器,优选两个串联。
    • 7. 发明授权
    • Preparation of trans-cyclohexane-1,4-disulphonyl urea
    • 反式环己烷-1,4-二磺酰脲的制备
    • US4418211A
    • 1983-11-29
    • US215415
    • 1980-12-11
    • Hans ZengelManfred Bergfeld
    • Hans ZengelManfred Bergfeld
    • C07C271/24C07C67/00C07C209/00C07C209/56C07C211/36C07C231/00C07C231/02C07C235/58C07C239/00C07C241/00C07C263/06C07C265/00C07C265/14C07C273/18C07C275/04C07C275/26C07C311/56C07D295/20C07C127/15
    • C07C273/1845C07C311/56
    • A process is disclosed for selectively making trans-cyclohexane-1,4-diisocyanate, trans-cyclohexane-1,4-diamine, a trans-cyclohexane-1,4-diurethane, a transcyclohexane-1,4-diurea and trans-cyclohexane-1,4-disulphonyl urea by reacting ammonia with a mixture of cis and trans cyclohexane-1,4-dicarboxylic acid, a lower alkyl ester, a glycol ester, an oligomeric ester or a polyester to make a solid trans-dicarboxylic acid diamide in a first step. The diamide is chlorinated to form trans-cyclohexane-1,4-dicarboxylic acid-bis-N-chloramide. The latter compound is then converted into a(a) trans-cyclohexane-1,4-diamine with an alkali metal hydroxide or alkaline earth metal hydroxide; or into a(b) trans-cyclohexane-1,4-diurethane by reaction with an alcohol or glycol in a reaction mixture containing an alkali metal hydroxide or alkaline earth metal hydroxide; or into(c) a trans-cyclohexane-1,4-diurea by reaction with a primary or secondary amine in a reaction mixture containing an alkali metal hydroxide or alkaline earth metal hydroxide; or into a(d) trans-cyclohexane-1,4-sulphonyl urea by reaction with a primary sulphonamide in a reaction mixture containing an alkali metal hydroxide and dimethyl formamide and water.The diurea prepared in (c) may be converted into trans-cyclohexane-1,4-diisocyanate with gaseous hydrogen chloride in an inert solvent. The diurethane prepared in (b) and the disulphonyl urea prepared in (d) may be thermally decomposed into trans-cyclohexane-1,4-diisocyanate.
    • 公开了一种选择性制备反式环己烷-1,4-二异氰酸酯,反式环己烷-1,4-二胺,反式环己烷-1,4-二氨基甲酸酯,反式环己烷-1,4-二脲和反式环己烷 -1,4-二磺酰脲通过使氨与顺式和反式环己烷-1,4-二羧酸,低级烷基酯,乙二醇酯,低聚酯或聚酯的混合物反应制得固体反式二羧酸二酰胺 在第一步。 将二酰胺氯化以形成反式 - 环己烷-1,4-二羧酸 - 双-N-氯酰胺。 然后将后一种化合物用碱金属氢氧化物或碱土金属氢氧化物转化为(a)反式 - 环己烷-1,4-二胺; 或通过与含有碱金属氢氧化物或碱土金属氢氧化物的反应混合物中的醇或二醇反应,形成(b)反式环己烷-1,4-二氨基甲酸酯; 或者通过与含有碱金属氢氧化物或碱土金属氢氧化物的反应混合物中的伯胺或仲胺反应形成(c)反式环己烷-1,4-二脲; 或通过与含有碱金属氢氧化物和二甲基甲酰胺和水的反应混合物中的伯磺酰胺反应而形成(d)反式 - 环己烷-1,4-磺酰脲。 (c)中制备的二脲可以在惰性溶剂中用气态氯化氢转化成反式 - 环己烷-1,4-二异氰酸酯。 (b)中制备的二氨基甲酸酯和(d)中制备的二磺酰脲可以热分解成反式环己烷-1,4-二异氰酸酯。