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公开(公告)号：EP4435175A1
公开(公告)日：2024-09-25
申请号：EP23163742.2
申请日：2023-03-23
申请人： SWISS KRONO Tec AG
发明人： HASCH, Joachim , KALWA, Norbert
摘要： Die Erfindung betrifft ein Verfahren zum Herstellen eines Holzfaserstoffs, mit den Schritten Erwärmen von Holzhackschnitzeln (18) in einem Vorkocher (16) mittels Wasser oder Dampf (26), danach Kochen der Holzhackschnitzel (18) mittels Dampf (26) in einem Kocher (14), danach Zerfasern der Holzhackschnitzel (18) in einem Refiner (32), sodass Fasermaterial (34) entsteht, wobei ein Teil des Dampfes nach dem Zerfasern abgezweigt und zum Erwärmen der Holzhackschnitzel (18) im Vorkocher (16) verwendet wird, mit dem Schritt Einbringen eines Oxidationsmittels (56) in den abgezweigten Dampf (26), sodass im Dampf (26) enthaltene volatile organische Substanzen oxidiert werden und gereinigter Dampf (68) entsteht, wobei der gereinigte Dampf (68) zumindest teilweise zum Erwärmen der Holzhackschnitzel (18) verwendet wird.
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公开(公告)号：EP3409691A1
公开(公告)日：2018-12-05
申请号：EP17173805.7
申请日：2017-05-31
发明人： ENGLISH, Robert , HEATON, John
摘要： A process for the production of a non-derivatized nanocellulose material from a cellulosic fibrous material, comprising the steps of providing a suspension of cellulosic fibrous material in a continuous phase of a non-aqueous process liquid comprising a swelling agent and a processing solvent; allowing the cellulosic fibrous material to swell such as to form a suspension of swollen cellulosic fibrous material in a continuous phase of non-aqueous process liquid; optionally refining said suspension of swollen cellulosic fibrous material in a continuous phase of non-aqueous process liquid to increase the fineness of the swollen cellulosic fibrous material; removing the swelling agent from the rocess liquid such as to form a suspension of cellulosic fibrous material in a continuous phase of processing solvent; subjecting the swollen and optionally refined cellulosic fibrous material to high-shear comminution such as to release of the non-derivatized nanocellulose material from the swollen and optionally refined cellulosic fibrous material and such as to form a dispersion of non-derivatized nanocellulose material in a continuous phase of a processing solvent; contacting the dispersion of non-derivatized nanocellulose material in a continuous phase of a processing solvent with a supercritical fluid such as to remove the processing solvent and isolate the non-derivatized nanocellulose material, wherein the supercritical fluid is preferably supercritical carbon dioxide or ammonia; characterized in that the swelling agent is a low-transition-temperature mixture (LTTM) and in particular a deep eutectic solvent and said low-transition-temperature mixture and in particular said deep eutectic solvent is soluble in the processing solvent and wherein the processing solvent is non-solubilizing for the cellulosic fibrous material and the non-derivatized nanocellulose material.
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公开(公告)号：EP3385444A1
公开(公告)日：2018-10-10
申请号：EP17165149.0
申请日：2017-04-06
申请人： BillerudKorsnäs AB
发明人： Nordling, Nils , Nordström, Fredrik
摘要： There is provided a method of producing a paper having a grammage according to ISO 536 of 50-250 g/m 2 , a Gurley value according to ISO 5636-5 of above 15 s and a stretchability according to ISO 1924-3 in the cross direction of at least 8 %, said method comprising the steps of:
a) providing a pulp, preferably sulphate pulp;
b) subjecting the pulp to refining;
c) diluting the pulp from step b) and discharging the diluted pulp at a discharge rate to a forming wire to form a paper web, wherein the speed of the forming wire is at least 7 m/min higher or at least 7 m/min lower than the discharge rate;
d) pressing the paper web from step c);
e) drying the paper web from step d), which drying comprises a step of compacting the paper web in a Clupak unit.-
5.发明公开
公开(公告)号：EP3356595A2
公开(公告)日：2018-08-08
申请号：EP16852536.8
申请日：2016-09-29
IPC分类号： D21C3/00 , D21C3/04 , D21C5/00 , D21C9/00 , D21C9/10 , D01F2/02 , C08B1/02 , C08B1/06 , C09K8/10 , C09K8/62 , B82Y40/00
CPC分类号： C08B15/08 , C07G1/00 , C08B37/0057 , C08H8/00 , C09K8/10 , C09K8/34 , C09K8/64 , C09K8/68 , C12P7/10 , C12P19/02 , C12P19/14 , C13K1/02 , D21B1/061 , D21C1/02 , D21C3/003 , D21C3/006 , D21C3/06 , D21C5/005 , D21C9/007 , D21C9/10 , D21C11/0007 , D21H11/18
摘要： Some variations provide a new nanolignocellulose composition comprising, on a bone-dry, ash-free, and acetyl-free basis, from 35 wt % to 80 wt % cellulose nanofibrils, cellulose microfibrils, or a combination thereof, from 15 wt % to 45 wt % lignin, and from 5 wt % to 20 wt % hemicelluloses. The hemicelluloses may contain xylan or mannan as the major component. Novel properties arise from the hemicellulose content that is intermediate between high hemicellulose content of raw biomass and low hemicellulose content of conventional nanocellulose. The nanolignocellulose composition is hydrophobic due to the presence of lignin. Processes for making and using the nanolignocellulose compositions are also described.
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公开(公告)号：EP2971347B1
公开(公告)日：2018-07-25
申请号：EP14711725.3
申请日：2014-03-14
CPC分类号： D21H17/675 , D21C9/007 , D21H11/18 , D21H21/20
摘要： A process for modifying the paper burst strength enhancing attributes of microfibrillated cellulose may include subjecting an aqueous suspension including microfibrillated cellulose, and optionally inorganic particulate material, to high shear, wherein the high shear is generated, at least in part, by a moving shearing element, to modify the paper burst strength enhancing attributes of the microfibrillated cellulose. An aqueous suspension may include microfibrillated cellulose, and optionally inorganic particulate material, obtainable by the process. A papermaking composition and/or a paper product may be obtained from the process.
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公开(公告)号：EP3344668A1
公开(公告)日：2018-07-11
申请号：EP16774973.8
申请日：2016-09-05
申请人： Helsingin Yliopisto
CPC分类号： C08F6/008 , C08B1/003 , C08B3/06 , C08J9/28 , D21C9/004 , D21C9/007 , D21C9/18 , D21C9/185 , D21H11/18 , Y02P20/542
摘要： Method of dewatering nanocellulose and other water soluble of hydrophilic polymers. The method comprises providing an aqueous suspension formed by nanocellulose in water, said nanocellulose having free hydroxyl groups; mixing the aqueous suspension with an ionic liquid or eutectic solvent which is capable of hydrogen bonding to at least a part of the free hydroxyl groups to form a modified suspension; and evaporating off water from the modified suspension in order to dewater the nanocellulose. With the ionic liquid procedure, solvent exchange with repeated centrifugation steps can be avoided, and solvent consumption and costs reduced, and processing sped up. The nanocellulose stabilized in the water-free environment then allows for access to efficient and thorough water-free chemical modification procedures resulting in highly fibrillated products.
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公开(公告)号：EP3077592B1
公开(公告)日：2018-06-13
申请号：EP14815783.7
申请日：2014-12-04
摘要： Method for making modified cellulose products comprises—processing cellulose pulp to modified cellulose pulp at a manufacturing location to increase the susceptibility of fibers to disintegration,—setting the modified cellulose pulp to a suitable dry matter content, and—transporting the modified cellulose pulp at set dry matter content to a location of use, where the modified cellulose pulp is disintegrated to nanofibrillar cellulose.
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公开(公告)号：EP3140454A4
公开(公告)日：2018-03-21
申请号：EP15789871
申请日：2015-05-06
发明人： BILODEAU MICHAEL A , PARADIS MARK A
摘要： A scalable, energy efficient process for preparing cellulose nanofibers is disclosed. The process employs treating the cellulosic material with a first mechanical refiner with plates having a configuration of blades separated by grooves, and subsequently treating the material with a second mechanical refiner with plates having a configuration of blades separated by grooves different than the first refiner. The plate configurations and treatment operations are selected such that the first refiner produces a first SEL that is greater than the SEL of the second refiner, by as much as 2-50 fold. An exemplary high first SEL may be in the range of 1.5 to 8 J/m. Paper products made with about 2% to about 30% cellulose nanofibers having a length from about 0.2 mm to about 0.5 mm, preferably from 0.2 mm to about 0.4 mm have improved properties.
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公开(公告)号：EP2414435B1
公开(公告)日：2017-09-13
申请号：EP10711423.3
申请日：2010-03-30
IPC分类号： C08J3/00 , C08J3/075 , D21B1/04 , B82Y30/00 , D01D5/42 , D01F2/00 , C08K3/26 , C08L33/02 , C08L33/08 , C08L67/00 , C08L85/02 , C08L97/02 , C08J5/00 , D21B1/30 , D21C9/00 , C08L33/26
CPC分类号： C08L97/02 , A23L29/262 , A23V2002/00 , B82Y30/00 , C08J3/00 , C08J3/075 , C08J5/005 , C08K3/26 , C08K2003/265 , C08L33/02 , C08L33/08 , C08L33/26 , C08L67/00 , C08L85/02 , C09D101/00 , D01D5/423 , D01F2/00 , D21B1/04 , D21B1/30 , D21C9/004 , D21C9/007
摘要： The present invention relates to a process for the production of nano-fibrillar cellulose gels by providing cellulose fibres and at least one filler and/or pigment; combining the cellulose fibres and the at least one filler and/or pigment; and fibrillating the cellulose fibres in the presence of the at least one filler and/or pigment until a gel is formed, as well as the nano-fibrillar cellulose gel obtained by this process and uses thereof.
摘要翻译： 本发明涉及通过提供纤维素纤维和至少一种填料和/或颜料来生产纳米纤维状纤维素凝胶的方法; 组合纤维素纤维和至少一种填料和/或颜料; 并在存在至少一种填料和/或颜料的情况下使纤维素纤维原纤化直至形成凝胶，以及通过该方法获得的纳米原纤纤维素凝胶及其用途。
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