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    • 1. 发明授权
    • Shaped composite adsorbent and a process for preparing the same
    • 成型复合吸附剂及其制备方法
    • US4414111A
    • 1983-11-08
    • US385410
    • 1982-05-17
    • Toshiyuki IwaisakoAkio Inoue
    • Toshiyuki IwaisakoAkio Inoue
    • B01J39/08B01J20/26B01J20/28B01J20/32B01J41/08B01J47/00B05D3/10B05D5/00
    • B01J47/007B01J20/321B01J20/3236B01J20/3238B01J20/3265Y10T428/24355Y10T428/249986Y10T428/265Y10T428/268
    • A shaped composite adsorbent made of a shaped porous material of a skin-core structure comprising a powdery ion-exchange type adsorbent and an ionic group-containing acrylonitrile polymer and wherein said shaped porous material has a semi-permeable skin layer of 0.01 to 1.mu. in thickness and a void volume rate of 50 to 90%, which is capable of adsorbing solutes present at low concentration with high selectivity and high yield. The shaped composite adsorbent of the present invention can be obtained by a process comprising dissolving an ionic group-containing acrylonitrile polymer in and dispersing a powdery ion exchange type adsorbent in an inorganic solvent for said acrylonitrile polymer, extruding the resultant into a coagulating liquid bath to effect coagulation-shaping thereof. The adsorption capacity and mechanical strength of the shaped composite adsorbent of the present invention can be further improved by subjecting the above-obtained coagulation-shaped material to heat treatment in a wet state, without drying.
    • PCT No.PCT / JP81 / 00379 Sec。 371日期1982年5月17日 102(e)日期1982年5月17日PCT提交1981年12月15日PCT公布。 公开号WO82 / 02006 日本1982年6月24日。一种由包含粉末状离子交换型吸附剂和含离子性基团的丙烯腈聚合物的皮肤芯结构的成形多孔材料制成的成形复合吸附剂,其中所述成形多孔材料具有半渗透性 表皮层的厚度为0.01〜1μm,空隙体积率为50〜90%,能够以高选择性和高收率吸附低浓度的溶质。 本发明的成形复合吸附剂可以通过以下方法获得,该方法包括将含离子基团的丙烯腈聚合物溶解并分散在用于所述丙烯腈聚合物的无机溶剂中并将粉末状离子交换型吸附剂分散,将所得物挤出到凝固液浴中 其凝固成型。 本发明的成型复合吸附剂的吸附能力和机械强度可以通过对上述得到的凝固形状的材料进行湿润处理而不干燥而进一步改善。
    • 8. 发明授权
    • Process for separating trioxane
    • 三恶烷分离方法
    • US4332644A
    • 1982-06-01
    • US271250
    • 1981-06-08
    • Katsuhiko HamanakaToshiyuki IwaisakoJunzo MasamotoKoichi Yoshida
    • Katsuhiko HamanakaToshiyuki IwaisakoJunzo MasamotoKoichi Yoshida
    • B01D3/34C07D323/06B01D11/04
    • C07D323/06B01D3/34
    • In a process for separating trioxane by a continuous distillation which comprises extracting, with benzene, the trioxane-containing distillate obtainable by heating an aqueous solution of formaldehyde, feeding the trioxane-containing benzene solution into a distillation column as a starting material, distilling out the benzene from the column top and withdrawing the trioxane from the column bottom, a process for separating trioxane which comprises retaining the concentration of trioxane X in the liquid composition at the starting material feeding plate of the distillation column (% by weight of trioxane based on the total liquid composition at the feeding plate) in the range satisfying the following relationship: ##EQU1## wherein R is reflux ratio, and .gamma. is a parameter defined by the following equation: ##EQU2## wherein q is the proportion of liquid part in the fed starting material as expressed in terms of ratio by weight and C (%) is the concentration of trioxane in the fed starting material.
    • 在通过连续蒸馏分离三恶烷的方法中,其包括用苯提取可通过加热甲醛水溶液获得的含三烷烃的馏出物,将含三恶烷的苯溶液作为起始原料进料到蒸馏塔中,蒸馏出 苯,从塔底抽出三恶烷,分离三恶烷的方法,该方法包括在蒸馏塔的起始原料进料板中保持液体组合物中三恶烷X的浓度(基于三恶烷的重量% (1)其中R是回流比,γ是由下式定义的参数:其中q 是供料起始原料中液体部分的比例,以重量比表示,C(%)是三恶烷的浓度 饲料原料。