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公开(公告)号：US09365973B2
公开(公告)日：2016-06-14
申请号：US14348791
申请日：2012-09-13
IPC分类号： D21C9/00 , D21C1/04 , D21C1/02 , D21C9/10 , C08B15/02 , C08B15/04 , D21C3/18 , D21H11/18 , D21H11/20 , D21H27/10 , D21C3/02
CPC分类号： D21C1/02 , C08B15/02 , C08B15/04 , D21C3/02 , D21C3/18 , D21C9/005 , D21C9/007 , D21C9/1036 , D21H11/18 , D21H11/20 , D21H27/10
摘要： Provided is a method which is capable of producing a cellulose nanofiber dispersion liquid that has a low viscosity and excellent fluidity even at a high concentration, while exhibiting excellent transparency. In a method for producing cellulose nanofibers, wherein a cellulosic starting material is oxidized in water using an oxidant in the presence of an N-oxyl compound and a compound that is selected from the group consisting of a bromide, an iodide and a mixture thereof and the thus obtained oxidized cellulose is defibrated and dispersed, pulp which is obtained by carrying out kraft cooking after a hydrolysis process is used as the cellulosic starting material.
摘要翻译： 提供一种能够生产即使在高浓度下也具有低粘度和优异流动性同时具有优异透明性的纤维素纳米纤维分散液的方法。 在制备纤维素纳米纤维的方法中，其中在N-氧基化合物和选自溴化物，碘化物及其混合物的化合物存在下，使用氧化剂在水中使纤维素原料氧化， 由此获得的氧化纤维素被去纤维化和分散，在水解过程之后通过进行硫酸盐蒸煮来获得的纸浆被用作纤维素起始材料。
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公开(公告)号：US20140238626A1
公开(公告)日：2014-08-28
申请号：US14348791
申请日：2012-09-13
IPC分类号： D21C1/02
CPC分类号： D21C1/02 , C08B15/02 , C08B15/04 , D21C3/02 , D21C3/18 , D21C9/005 , D21C9/007 , D21C9/1036 , D21H11/18 , D21H11/20 , D21H27/10
摘要： Provided is a method which is capable of producing a cellulose nanofiber dispersion liquid that has a low viscosity and excellent fluidity even at a high concentration, while exhibiting excellent transparency. In a method for producing cellulose nanofibers, wherein a cellulosic starting material is oxidized in water using an oxidant in the presence of an N-oxyl compound and a compound that is selected from the group consisting of a bromide, an iodide and a mixture thereof and the thus obtained oxidized cellulose is defibrated and dispersed, pulp which is obtained by carrying out kraft cooking after a hydrolysis process is used as the cellulosic starting material.
摘要翻译： 提供一种能够生产即使在高浓度下也具有低粘度和优异流动性同时具有优异透明性的纤维素纳米纤维分散液的方法。 在制备纤维素纳米纤维的方法中，其中在N-氧基化合物和选自溴化物，碘化物及其混合物的化合物存在下，使用氧化剂在水中使纤维素原料氧化， 由此获得的氧化纤维素被去纤维化和分散，在水解过程之后通过进行硫酸盐蒸煮来获得的纸浆被用作纤维素起始材料。
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公开(公告)号：US20140053828A1
公开(公告)日：2014-02-27
申请号：US14008682
申请日：2012-03-14
IPC分类号： C08B15/00
摘要： Cellulose nanofibers are produced by means of a method comprising a step (A) of oxidizing a cellulosic starting material in the presence of an N-oxyl compound and a step (B) of forming the oxidized cellulosic starting material into nanofibers by defibrating the oxidized cellulosic starting material, and a step (C) of performing at least one selected from the following steps: a step (C-1) of treating the cellulosic starting material in water having a hydroxide ion concentration of 0.75 to 3.75 mol/L prior to performing the step (A); and a step (C-2) of subjecting the oxidized cellulosic starting material obtained from the step (A) to hydrolysis in an alkaline solution having a pH between 8 and 14 after performing the step (A) and prior to performing the step (B).
摘要翻译： 纤维素纳米纤维通过包括在N-氧基化合物的存在下氧化纤维素原料的步骤（A）的方法和通过将氧化的纤维素纤维素去纤维来形成氧化的纤维素起始材料的步骤（B） 起始原料和进行选自以下步骤中的至少一种的步骤（C）：在进行氢氧根离子浓度为0.75〜3.75mol / L的水中处理纤维素原料的工序（C-1） 步骤（A）; 以及在进行步骤（A）之后并且在进行步骤（B）之前使由步骤（A）获得的氧化纤维素起始材料在pH为8至14的碱性溶液中水解的步骤（C-2） ）。
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公开(公告)号：US09139662B2
公开(公告)日：2015-09-22
申请号：US14008682
申请日：2012-03-14
摘要： Cellulose nanofibers are produced by means of a method comprising a step (A) of oxidizing a cellulosic starting material in the presence of an N-oxyl compound and a step (B) of forming the oxidized cellulosic starting material into nanofibers by defibrating the oxidized cellulosic starting material, and a step (C) of performing at least one selected from the following steps: a step (C-1) of treating the cellulosic starting material in water having a hydroxide ion concentration of 0.75 to 3.75 mol/L prior to performing the step (A); and a step (C-2) of subjecting the oxidized cellulosic starting material obtained from the step (A) to hydrolysis in an alkaline solution having a pH between 8 and 14 after performing the step (A) and prior to performing the step (B).
摘要翻译： 纤维素纳米纤维通过包括在N-氧基化合物的存在下氧化纤维素原料的步骤（A）的方法和通过将氧化的纤维素纤维素去纤维来形成氧化的纤维素起始材料的步骤（B） 起始原料和进行选自以下步骤中的至少一种的步骤（C）：在进行氢氧根离子浓度为0.75〜3.75mol / L的水中处理纤维素原料的工序（C-1） 步骤（A）; 以及在进行步骤（A）之后并且在进行步骤（B）之前使由步骤（A）获得的氧化纤维素起始材料在pH为8至14的碱性溶液中水解的步骤（C-2） ）。
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