METHOD FOR THE PREPARATION OF CELLULOSE ETHERS WITH A HIGH SOLIDS PROCESS, PRODUCT OBTAINED AND USES OF THE PRODUCT
    1.
    发明申请
    METHOD FOR THE PREPARATION OF CELLULOSE ETHERS WITH A HIGH SOLIDS PROCESS, PRODUCT OBTAINED AND USES OF THE PRODUCT 审中-公开
    用高固体工艺制备纤维素的方法,产品获得和使用产品

    公开(公告)号:WO2013150475A1

    公开(公告)日:2013-10-10

    申请号:PCT/IB2013/052691

    申请日:2013-04-04

    CPC classification number: C08B11/12 C08B1/08

    Abstract: The present invention provides a method for production of cellulose ethers in a high solids process substantially without use of organic solvents as reaction and/or washing medium. In the method of the invention the first alkalization step is carried out by using high solids content cellulose pulp and solid sodium hydroxide. This is followed by an etherification step where the solids content is preferably further increased and the use of solid etherification reactant is preferred. As no organic solvents are used as reaction media the invented method enables production of cellulose ethers directly from never dried pulp with significant savings in energy and investment costs. The method is especially suitable for the production of carboxymethyl cellulose sodium salt (CMC) with low degree of substitution (DS

    Abstract translation: 本发明提供了一种基本上不使用有机溶剂作为反应和/或洗涤介质的高固体分离过程中生产纤维素醚的方法。 在本发明的方法中,通过使用高固体含量的纤维素纸浆和固体氢氧化钠来进行第一碱化步骤。 之后是醚化步骤,其中固体含量优选进一步增加,并且优选使用固体醚化反应物。 由于不使用有机溶剂作为反应介质,所以本发明的方法能够直接从未干燥的纸浆生产纤维素醚,从而显着节省能源和投资成本。 该方法特别适用于低取代度(DS <0.3)的羧甲基纤维素钠盐(CMC)的生产。 所得到的无水或低水溶性羧甲基化纤维素纤维的使用适用于例如用于生产微纤化纤维素。

    METHOD FOR THE PREPARATION OF CELLULOSE ETHERS WITH A HIGH SOLIDS PROCESS, PRODUCT OBTAINED AND USES OF THE PRODUCT
    8.
    发明公开
    METHOD FOR THE PREPARATION OF CELLULOSE ETHERS WITH A HIGH SOLIDS PROCESS, PRODUCT OBTAINED AND USES OF THE PRODUCT 有权
    用于生产纤维素醚在用这种方法制成的产品高固国有股法律程序和本产品的用途

    公开(公告)号:EP2834275A1

    公开(公告)日:2015-02-11

    申请号:EP13772103.1

    申请日:2013-04-04

    Applicant: Stora Enso Oyj

    CPC classification number: C08B11/12 C08B1/08

    Abstract: The present invention provides a method for production of cellulose ethers in a high solids process substantially without use of organic solvents as reaction and/or washing medium. In the method of the invention the first alkalization step is carried out by using high solids content cellulose pulp and solid sodium hydroxide. This is followed by an etherification step where the solids content is preferably further increased and the use of solid etherification reactant is preferred. As no organic solvents are used as reaction media the invented method enables production of cellulose ethers directly from never dried pulp with significant savings in energy and investment costs. The method is especially suitable for the production of carboxymethyl cellulose sodium salt (CMC) with low degree of substitution (DS

    Abstract translation: 本发明提供了用于生产高固体处理纤维素醚的方法,基本上没有使用有机溶剂作为反应和/或洗涤介质。 在本发明的方法中的第一碱化步骤通过使用高固体含量的纤维素纸浆和固体氢氧化钠开展。 这是通过在醚化步骤,其中固体含量优选进一步增大,并且使用固体反应物的醚化是优选的遵循。 由于没有使用有机溶剂作为反应介质发明了方法能够生产纤维素醚的直接从在能量和投资成本节约显著从未干燥纸浆。 该方法是爱特别适合于生产羧甲基纤维素钠盐(CMC)的低取代度(DS <0.3)。 使用所得的无或低水溶性的羧甲基化的纤维素纤维的是适用于例如制造微纤化纤维素。

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