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公开(公告)号：EP2837639B1
公开(公告)日：2020-02-26
申请号：EP14179921.3
申请日：2014-08-05
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2.发明公开HYPROMELLOSE ACETATE SUCCINATE AND METHOD FOR PRODUCING HYPROMELLOSE ACETATE SUCCINATE 审中-公开醋酸胞外酯琥珀酸酯和生产醋酸胞内酯琥珀酸酯的方法
公开(公告)号：EP3290444A1
公开(公告)日：2018-03-07
申请号：EP17187808.5
申请日：2017-08-24
IPC分类号： C08B13/00
摘要： Provided is a method for producing HPMCAS capable of reducing the average particle size of HPMCAS particles to an intended range without a pulverization step. Specifically provided is a method for producing hypromellose acetate succinate, comprising an esterification step of reacting hypromellose with an esterification agent in the presence of a catalyst to obtain a reaction solution containing crude hypromellose acetate succinate, a precipitation step of mixing the reaction solution with water to precipitate the crude hypromellose acetate succinate, thereby obtaining a hypromellose acetate succinate suspension, a liquid removal step of removing a liquid from the hypromellose acetate succinate suspension with a centrifugal decanter to obtain liquid-removed hypromellose acetate succinate, and a drying step of drying the liquid-removed hypromellose acetate succinate.
摘要翻译： 本发明提供一种HPMCAS的制造方法，其能够在不进行粉碎工序的情况下将HPMCAS粒子的平均粒径缩小至目标范围。 具体而言，提供一种乙酸琥珀酸羟丙甲纤维素酯的制造方法，其包括使羟丙甲纤维素与酯化剂在催化剂存在下反应的酯化工序，得到含有醋酸琥珀酸羟丙甲纤维素酯的反应溶液，将反应溶液与水混合 从而得到琥珀酸羟丙甲纤维素琥珀酸酯，从而得到琥珀酸羟丙甲纤维素琥珀酸酯悬浮液;用离心滗析器从乙酸羟丙甲纤维素琥珀酸酯悬浮液中除去液体以获得液体除去的乙酸琥珀酸羟丙甲纤维素酯的液体除去步骤;以及干燥步骤， 去除醋酸羟丙甲纤维素琥珀酸酯。
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3.发明公开Method for dehydrating hydrous low-substituted hydroxypropyl cellulose and method for producing low-substituted hydroxypropyl cellulose by using same 审中-公开一种用于脱水含水低取代羟丙基纤维素和制备低取代羟丙基纤维素由此方法
公开(公告)号：EP2837639A1
公开(公告)日：2015-02-18
申请号：EP14179921.3
申请日：2014-08-05
摘要： Reduction of the energy burden in a step of drying hydrous low-substituted hydroxypropyl cellulose (L-HPC), reduction of water content of a cake obtained by dehydration, and others are targeted. More specifically, provided are a method for dehydrating hydrous L-HPC with a compression type dehydrator by feeding the hydrous L-HPC to a screw conveyer connected to the inlet of the dehydrator, comprising steps of: starting the operation of the conveyer to fill the conveyer and the dehydrator with the hydrous L-HPC, starting the operation of the filled dehydrator, and feeding the hydrous L-HPC to the conveyer, while discharging dehydrated L-HPC from an outlet of the dehydrator, wherein a feed rate of feeding the hydrous L-HPC to the conveyer is equal to a discharge rate of discharging the dehydrated L-HPC in terms of net weight of cellulose ether, and a method for producing L-HPC by using the above method.
摘要翻译： 在干燥含水低羟丙基纤维素substituiertem（L-HPC），减少的通过脱水而得到的饼的水含量，以及其他的步骤的能量减负被靶向。 更具体地，提供了用于通过将水合L-HPC到连接到脱水器的入口的螺旋输送机，其包括以下步骤脱水含水L-HPC与压缩型脱水装置的方法，包括：在开始输送机的手术，以填补 输送机，并与含水L-HPC的脱水，在开始填充脱水的手术，和馈送水合L-HPC的输送机，而从在脱水器的出口排出脱水L-HPC，worin供给的进料速率 含水L-HPC该输送带等于在纤维素醚的净重量计排出脱水L-HPC的放电速率，以及通过使用上述方法生产L-HPC的方法。
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