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1.发明公开METHOD FOR PRODUCING MICROFIBRILLATED CELLULOSE AND MICROFIBRILLATED CELLULOSE 审中-公开生产微纤化纤维素和微纤化纤维素的方法
公开(公告)号：EP3212676A1
公开(公告)日：2017-09-06
申请号：EP15798488.1
申请日：2015-10-29
申请人： Kemira OYJ
摘要： The invention relates to a method for producing microfibrillated cellulose, where a suspension comprising cellulose derivative in a liquid phase which comprises an organic solvent is provided. The suspension of cellulose derivative is mechanically treated and microfibrillated cellulose is obtained. At least a part of the liquid phase from the microfibrillated cellulose is separated and microfibrillated cellulose with a dry solids content of >30 weight-% is obtained.
摘要翻译： 本发明涉及一种生产微纤化纤维素的方法，其中提供包含纤维素衍生物的液体相的悬浮液，所述悬浮液包含有机溶剂。 机械处理纤维素衍生物的悬浮液并获得微纤化纤维素。 分离至少一部分来自微纤化纤维素的液相，获得干固体含量> 30重量％的微纤化纤维素。
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公开(公告)号：EP2576627A1
公开(公告)日：2013-04-10
申请号：EP11729639.2
申请日：2011-06-06
申请人： Kemira OYJ
发明人： RÄSÄNEN, Erkki Iikka Sakari , ROBERTSÉN, Leif , VUORENPALO, Veli-Matti , KARPPI, Asko , PARVIAINEN, Kari , DAHL, Olli , VANHATALO, Kari
摘要： The present invention relates to a process for producing microcellulose comprising a) acidifying fibrous cellulosic material, b) washing the acidified cellulosic material, c) optionally dewatering the washed cellulosic material, and d) hydrolyzing the washed or washed and dewatered cellulosic material under acidic conditions at a temperature of at least 120°C and at a consistency of at least 8% on dry weight of the cellulose.
摘要翻译： 本发明涉及一种生产微纤维素的方法，包括：a）酸化纤维状纤维素材料，b）洗涤酸化的纤维素材料，c）任选地使洗涤过的纤维素材料脱水，和d）在酸性条件下水解洗涤和洗涤的和脱水的纤维素材料 在至少120℃的温度下和在纤维素的干重上至少为8％的稠度。
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公开(公告)号：EP4069752A1
公开(公告)日：2022-10-12
申请号：EP20824599.3
申请日：2020-12-04
申请人： Kemira OYJ
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4.发明授权METHOD FOR REDUCTION OF LIGHT-INDUCED YELLOWING OF LIGNIN-CONTAINING MATERIAL 有权法降低诱导VERGILBUNGSBLOCKER含木质素的材料THE LIGHT
公开(公告)号：EP2286028B1
公开(公告)日：2011-12-28
申请号：EP09735031.8
申请日：2009-04-17
申请人： Kemira OYJ
CPC分类号： D21C9/005 , D21H21/143
摘要： The present invention provides a method for treating lignin-containing fibrous material to reduce its susceptibility to yellowing, comprising stabilizing the lignin of the material with an oxidizing agent capable of oxidizing phenolic or similar groups, which may undergo reactions conductive to the formation of colored sites on the fibers, and treating the material with a fluorescent whitening agent. The present invention also provides a lignin-containing material obtained by said method.
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5.发明公开METHOD FOR REDUCING BRIGHTNESS REVERSION OF MECHANICAL PULPS AND HIGH-YIELD CHEMICAL PULPS 审中-公开法降低VERGILBUNGSBLOCKER原材料和高产浆
公开(公告)号：EP1706536A1
公开(公告)日：2006-10-04
申请号：EP04805192.4
申请日：2004-12-23
申请人： Kemira Oyj
发明人： BUCHERT, Johanna , VIIKARI, Liisa , GRÖNQVIST, Stina , SVEDMAN, Mikael , PAREN, Aarto , VUORENPALO, Veli-Matti
CPC分类号： D21C9/005 , D21C5/005 , D21H11/20 , D21H21/143
摘要： The present invention concerns a process for reducing the susceptibility of lignocellulosic material to unwanted yellowing, particularly yellowing caused by light and heat. According to the invention, the fibres are activated enzymatically or chemically and then contacted with a modifying agent capable of bonding to the oxidized fibre material, rendering the lignocellulosic fibre material improved resistance to brightness reversion. By means of the invention, brightness reversion caused by light or heat or a combination thereof can be retarded and even stopped.
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公开(公告)号：EP2576627B1
公开(公告)日：2018-08-08
申请号：EP11729639.2
申请日：2011-06-06
申请人： Kemira OYJ
发明人： RÄSÄNEN, Erkki Iikka Sakari , ROBERTSÉN, Leif , VUORENPALO, Veli-Matti , KARPPI, Asko , PARVIAINEN, Kari , DAHL, Olli , VANHATALO, Kari
摘要： The present invention relates to a process for producing microcellulose comprising a) acidifying fibrous cellulosic material, b) washing the acidified cellulosic material, c) optionally dewatering the washed cellulosic material, and d) hydrolyzing the washed or washed and dewatered cellulosic material under acidic conditions at a temperature of at least 120° C. and at a consistency of at least 8% on dry weight of the cellulose.
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公开(公告)号：EP2935446A1
公开(公告)日：2015-10-28
申请号：EP13818241.5
申请日：2013-12-19
申请人： Kemira OYJ
摘要： The present invention relates to a method for producing dewatered microfibrillated cellulose (MFC) comprising i) providing an aqueous MFC slurry, ii) optionally dewatering said MFC slurry by mechanical means to provide a partly dewatered MFC slurry, and iii) subjecting the MFC slurry or the partly dewatered MFC slurry to one or more drying operations by means of one or more absorbing materials to produce dewatered MFC. The produced MFC can be redispersed in water without deteriorating the material properties of the MFC.
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公开(公告)号：EP2576628A1
公开(公告)日：2013-04-10
申请号：EP11729640.0
申请日：2011-06-06
申请人： Kemira OYJ
发明人： KARPPI, Asko , VUORENPALO, Veli-Matti , ROBERTSÉN, Leif , PARVIAINEN, Kari , DAHL, Olli , VANHATALO, Kari
IPC分类号： C08B15/02
CPC分类号： C08B15/02
摘要： The present invention relates to a process for producing microcellulose comprising subjecting fibrous cellulosic material to acid hydrolysis at a temperature from 10° C. to less than 140° C. and at a consistency of at least 8% on dry weight of the cellulose, wherein the amount of added acid is from 0.2 to 2%, preferably from 0.3 to 1.9%, more preferably from 0.5 to 1.5% on dry weight of the cellulose.
摘要翻译： 本发明涉及一种生产微纤维素的方法，包括使纤维素纤维素材料在10℃至小于140℃的温度下进行酸水解，并且纤维素的干重至少为8％，其中 加入的酸的量相对于纤维素的干重为0.2〜2％，优选为0.3〜1.9％，更优选为0.5〜1.5％。
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公开(公告)号：EP4359353A1
公开(公告)日：2024-05-01
申请号：EP22737645.6
申请日：2022-06-20
申请人： Kemira OYJ
IPC分类号： C02F11/147 , C02F11/12 , C02F1/52 , C02F1/56 , C02F11/127 , C02F103/28 , C02F11/122
CPC分类号： C02F11/147 , C02F2103/2820130101 , C02F11/127 , C02F11/122 , C02F1/56 , C02F1/5263
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