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    PROCEDE DE FABRICATION DE PRODUITS ALVEOLAIRES CELLULOSIQUES
    61.
    发明公开
    PROCEDE DE FABRICATION DE PRODUITS ALVEOLAIRES CELLULOSIQUES 失效
    用于生产ZELLENFORMIGEN纸浆制品

    公开(公告)号：EP0897411A1

    公开(公告)日：1999-02-24

    申请号：EP97923135.0

    申请日：1997-05-06

    Applicant: FINANCIERE ELYSEES BALZAC

    Inventor： CHEVALIER, Christophe ,  CHANZY, Henri ,  WERTZ, Jean-Luc

    IPC: A47L13 ,  C08J9

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

    Abstract: The invention discloses a method for manufacturing alveolate cellulose products (sponges, sponge-cloths...), from a cellulose raw material, which comprises: dissolving at least partially the said cellulose raw material in an intrinsic solvent; incorporating, under agitation, into the resulting mixture an effective amount of at least one pore forming agent; the said pore forming agent(s), compatible with the cellulose mixture, being suitable for generating, when their action develops, a macro- and a microporosity; gelling the consistent homogeneous mass thus obtained; treating the said gelled mass under conditions where the dissolved cellulose precipitates and the action of the pore forming agent(s) present develops. The said method is an advantageous alternative to the polluting viscose method. The products obtained have properties quite similar to those of the products obtained by the said viscose method. The said new products are part of the invention.

    Cellulose derivative sponge and method for producing it
    62.
    发明公开
    Cellulose derivative sponge and method for producing it 失效
    Cellulosederivatschwamm和Herstellungsverfahren。

    公开(公告)号：EP0670344A1

    公开(公告)日：1995-09-06

    申请号：EP95301191.3

    申请日：1995-02-23

    Applicant: NISSHINBO INDUSTRIES, INC.

    Inventor： Sato, Takaya, c/o Tokyo Res. C. ,  Uehara, Tsutomu, c/o Tokyo Res. C. ,  Yoshida, Hiroshi, c/o Tokyo Res. C. ,  Takenishi, Soichiro, c/o Tokyo Res. C.

    IPC: C08J9/26 ,  C08B11/155

    CPC classification number: C08J9/26 ,  C08J2201/0444 ,  C08J2301/28 ,  C08L1/286 ,  C08L1/288

    Abstract: Disclosed is a sponge comprising a cyanoethyl cellulose having a nitrogen content of 0.1 % by weight or more, that is obtained by extruding and regenerating under heat a mixture composed of viscose, reinforcing fibers, crystalline Glauber's salt and acrylonitrile at 90 to 100 °C, followed by washing it with water, or a cyanoethyl cellulose having a nitrogen content of 0.1 % by weight or more, that is obtained by casting into mold and regenerating under heat a mixture composed of viscose, reinforcing fibers, crystalline Glauber's salt and acrylonitrile followed by bringing into contact with an acidic aqueous solution and washing it with water, or a carbamoylethyl cellulose, or carboxyethyl cellulose to be obtained by hydrolyzing said cyanoethyl cellulose. The sponge is prepared by shaping a sponge stock composed of viscose, reinforcing fibers, crystalline Glauber's salt and acrylonitrile, followed by coagulating, regenerating and washing it with water. The sponge has good dry softness, good restorability and high cellulase resistance.

    Abstract translation: 公开了一种海绵，其含有氮含量为0.1重量％以上的氰乙基纤维素，其通过在90〜100℃下，由粘胶，增强纤维，结晶芒硝和丙烯腈组成的混合物在加热下进行挤出和再生而获得， 然后用水洗涤，或者将氮含量为0.1重量％以上的氰乙基纤维素，通过浇铸到模具中并在加热下再生由粘胶，增强纤维，结晶芒硝和丙烯腈组成的混合物，然后是 使其与酸性水溶液接触并用水或氨基甲酰乙基纤维素或羧乙基纤维素洗涤，通过水解所述氰乙基纤维素得到。 通过将由粘胶，增强纤维，结晶芒硝和丙烯腈组成的海绵料成形，然后凝结，再生和用水洗涤，制备海绵。 海绵具有良好的干燥柔软度，良好的恢复性和高的纤维素酶抗性。

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