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公开(公告)号：EP2706071B1
公开(公告)日：2017-01-11
申请号：EP12779362.8
申请日：2012-04-27
申请人： Kao Corporation
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公开(公告)号：EP2706072A1
公开(公告)日：2014-03-12
申请号：EP12779963.3
申请日：2012-04-27
申请人： Kao Corporation
CPC分类号： C08B1/08 , C08B1/06 , C08B11/00 , C08B11/02 , C08B11/06 , C08B11/08 , C08B11/12 , C08B11/14 , C08B11/20 , C08H8/00 , D21C9/004 , D21C9/007
摘要： The present invention relates to a method for producing an alkali cellulose with suppressed decrease in the degree of polymerization as well as with small use amount of a basic compound, and to a method for producing a cellulose ether by using the alkali cellulose thus obtained. Provided by the present invention are: (A) a method for producing an alkali cellulose, comprising Step 1 wherein a cellulose-containing raw material (I) is treated by a pulverizing machine thereby obtaining a cellulose-containing raw material (II) which contains a cellulose having crystallinity in the range of 10 to 55% and Step 2 wherein the cellulose-containing raw material (II) obtained in Step 1 is added by a basic compound with the amount thereof being in the range of 0.6 to 1.5 mol relative to 1 mol of an anhydroglucose unit that constitutes the said cellulose as well as by water with the amount thereof being in the range of 20 to 100% by mass relative to the said cellulose thereby obtaining the alkali cellulose; and (B) a method for producing a cellulose ether by reacting the alkali cellulose produced by the foregoing production method with an etherification agent.
摘要翻译： 本发明涉及抑制聚合度下降受到抑制的碱纤维素的制造方法，以及碱性化合物的使用量少的纤维素醚的制造方法以及使用该碱纤维素的制造方法。 本发明提供的是：（A）碱纤维素的制造方法，其包括：步骤1，其中通过粉碎机处理含纤维素原料（I），从而获得含有纤维素的原料（II），其含有 结晶度在10-55％范围内的纤维素和步骤2，其中步骤1中得到的含纤维素原料（II）通过碱性化合物加入，其量相对于 1摩尔构成上述纤维素的脱水葡萄糖单元以及相对于上述纤维素为20〜100质量％的范围的水，由此得到碱纤维素; （B）使通过上述制造方法制造的碱纤维素与醚化剂反应来制造纤维素醚的方法。
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公开(公告)号：EP2706071A1
公开(公告)日：2014-03-12
申请号：EP12779362.8
申请日：2012-04-27
申请人： Kao Corporation
发明人： MIYOSHI, Eisuke , YOSHIDA, Yutaka , MIYASATO, Ryo , SHIBA, Kenichi , TAKAHASHI, Rui , IMORI, Yoichiro
摘要： The present invention relates to a method for producing an alkali cellulose with suppressed decrease in the degree of polymerization as well as with small use amount of a basic compound, and to a method for producing a cellulose ether by using the alkali cellulose thus obtained. Provided by the present invention are: (A) a method for producing an alkali cellulose, comprising Step 1 wherein a cellulose-containing raw material is pulverized in the presence of 0.6 to 1.5 mol of a basic compound relative to 1 mol of an anhydroglucose unit that constitutes a cellulose in the said cellulose-containing raw material and under the condition in which the water content therein relative to the cellulose in the cellulose-containing raw material is 10% or less by mass thereby obtaining a cellulose powder mixture having the median diameter of the cellulose-containing raw material made 150 µm or less and Step 2 wherein water content therein is adjusted in the range of 30 to 100% by mass relative to the cellulose by adding water to the cellulose powder mixture thereby obtaining the alkali cellulose in the powder form; and (B) a method for producing a cellulose ether by reacting the alkali cellulose produced by the foregoing production method with an etherification agent.
摘要翻译： 本发明涉及抑制聚合度下降受到抑制的碱纤维素的制造方法，以及碱性化合物的使用量少的纤维素醚的制造方法以及使用该碱纤维素的制造方法。 本发明提供的是：（A）碱纤维素的制造方法，其包括：步骤1，相对于1摩尔脱水葡萄糖单元，在0.6〜1.5摩尔的碱性化合物的存在下，将含有纤维素的原料粉碎 在所述含纤维素原料中，相对于所述含纤维素原料中的纤维素的含水量为10质量％以下的条件下，构成纤维素，由此得到中值粒径的纤维素粉末混合物 的含纤维素原料的纤维素粉末混合物和150μm以下的含纤维素原料的混合物;以及步骤2，其中通过将水添加到纤维素粉末混合物中，将其中的水含量相对于纤维素调整在30至100质量％的范围内，由此获得 粉末状; （B）使通过上述制造方法制造的碱纤维素与醚化剂反应来制造纤维素醚的方法。
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