中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

23 records (took 0.03 seconds)

    Multi-cellular cellulose particle and process for preparation thereof
    1.
    发明授权
    Multi-cellular cellulose particle and process for preparation thereof 失效
    多细胞纤维素颗粒及其制备方法

    公开(公告)号：US4958014A

    公开(公告)日：1990-09-18

    申请号：US230092

    申请日：1988-08-09

    Applicant: Junichi Shirokaze

    Inventor： Junichi Shirokaze

    IPC: C08J3/12 ,  C08J3/14 ,  C08J5/20 ,  C08J9/28 ,  C12M3/02

    CPC classification number: C08J3/14 ,  C08J9/28 ,  C08J2201/0482 ,  C08J2201/0484 ,  C08J2201/0547 ,  C08J2301/02

    Abstract: A multi-cellular cellulose particle having a multiplicity of cells spaced from one another by cell membranes is described, which cells have a maximum inscribed sphere diameter of larger than 2 .mu.m. The cells have a continuous hole structure in which the cells communicate with one another through openings in the membranes separating two adjacent cells. The multi-cellular cellulose particle is prepared by forming drops of a solution of cellulose or a cellulose derivative, cooling the drops at a temperature lower than the solidification temperature of the solution to freeze the drops, and removing the solvent by extraction or nullifying the dissolving power of the solvent.

    METHOD FOR PRODUCING POROUS CELLULOSE BEADS AND ADSORBENT EMPLOYING SAME
    2.
    发明申请
    METHOD FOR PRODUCING POROUS CELLULOSE BEADS AND ADSORBENT EMPLOYING SAME 审中-公开
    生产多孔纤维素珠的方法和使用它的吸附剂

    公开(公告)号：US20160243521A1

    公开(公告)日：2016-08-25

    申请号：US15029551

    申请日：2014-10-14

    Applicant: KANEKA CORPORATION

    Inventor： Asuka HAYASHI ,  Yoshikazu KAWAI ,  Ken-ichiro MORIO

    IPC: B01J20/24 ,  B01J20/30 ,  C07K17/12 ,  C08J9/28 ,  C07K1/22 ,  B01J20/285 ,  C08J9/16

    CPC classification number: B01J20/24 ,  B01J20/285 ,  B01J20/286 ,  B01J20/305 ,  B01J20/3085 ,  B01J20/3212 ,  B01J20/3217 ,  B01J20/3274 ,  B01J20/3293 ,  C07K1/145 ,  C07K1/22 ,  C07K17/12 ,  C08B15/10 ,  C08J9/16 ,  C08J9/28 ,  C08J2201/026 ,  C08J2201/0547 ,  C08J2301/00

    Abstract: The objective of the present invention is to provide a method for easily and efficiently producing cellulose beads which have pore shape suitable for an adsorbent and of which adsorption performance is excellent without using highly toxic and highly corrosive auxiliary raw material and without industrially disadvantageous cumbersome step. The method for producing porous cellulose beads according to the present invention is characterized in comprising (a) the step of preparing a fine cellulose dispersion by mixing a low temperature alkaline aqueous solution and cellulose, (b) the step of preparing a mixed liquid by adding a crosslinking agent to the fine cellulose dispersion, (c) the step of preparing an emulsion by dispersing the mixed liquid in a dispersion medium, (d) the step of contacting the emulsion with a coagulating solvent.

    Abstract translation: 本发明的目的是提供一种容易且有效地制造具有适合于吸附剂的孔隙形状的纤维素珠粒的方法，其吸附性能优异，而不需要使用高毒性和高腐蚀性的辅助原料，而且在工业上不利的繁琐步骤。 根据本发明的多孔纤维素珠粒的制造方法的特征在于，（a）通过混合低温碱性水溶液和纤维素来制备细纤维素分散液的步骤，（b）通过添加制备混合液体的步骤 （c）通过将混合液体分散在分散介质中制备乳液的步骤，（d）使乳液与凝固溶剂接触的步骤。

    Method for manufacturing alveolate cellulosed products
    3.
    发明授权
    Method for manufacturing alveolate cellulosed products 失效
    蜂窝状纤维素产品的制造方法

    公开(公告)号：US6129867A

    公开(公告)日：2000-10-10

    申请号：US147228

    申请日：1998-11-04

    Applicant: Christophe Chevalier ,  Henri Chanzy ,  Jean-Luc Wertz

    Inventor： Christophe Chevalier ,  Henri Chanzy ,  Jean-Luc Wertz

    IPC: A47L13/16 ,  C08J9/00 ,  C08J9/26 ,  C08J9/28 ,  B29C67/20

    CPC classification number: C08J9/26 ,  A47L13/16 ,  C08J9/0085 ,  C08J9/28 ,  C08J2201/0444 ,  C08J2201/0547 ,  C08J2301/02

    Abstract: The present invention provides a process for producing alveolar cellulosic products (sponges, sponge-cloths, etc.) from a cellulosic raw material, the process comprising:at least partially dissolving a cellulosic raw material in an intrinsic solvent for cellulose;incorporating an effective quantity of at least one pore-forming agent into the resulting mixture, with mixing; said pore-forming agent(s), being compatible with the cellulosic mixture, being capable of generating macro- and micro-pores when it/they is/are actuated;gelling the homogeneous dough thus obtained;treating said gelled dough under conditions in which the cellulose precipitates out and the pore-forming agent(s) present are actuated.The process is an advantageous alternative to the viscose process which is a polluting process. The properties of the products obtained are completely similar to those of products obtained using the viscose process. The (novel) products form part of the invention.

    Abstract translation: PCT No.PCT / FR97 / 00796 Sec。 371日期：1998年11月4日 102（e）1998年11月4日日期PCT提交1997年5月6日PCT公布。 第WO97 / 42259号公报 日期1997年11月13日本发明提供从纤维素原料生产肺泡纤维素产品（海绵，海绵布等）的方法，该方法包括：将纤维素原料至少部分溶解在纤维素的固有溶剂中 ; 在混合物中加入有效量的至少一种成孔剂， 所述成孔剂与纤维素混合物相容，当它们被驱动时能够产生大孔和微孔; 胶凝所得到的均质面团; 在纤维素沉淀出来的条件下处理所述胶凝生面团并且致动成孔剂。 该方法是粘胶过程的有利替代方法，其是污染过程。 获得的产品的性质与使用粘胶工艺获得的产品的性质完全相似。 （小说）产品构成本发明的一部分。

Patent Agency Ranking