公开(公告)号：EP4411066A1

公开(公告)日：2024-08-07

申请号：EP22872487.8

申请日：2022-06-22

申请人： Daio Paper Corporation

发明人： AOKI, Ryunosuke ,  MATSUSUE, Ikko ,  IMAI, Takaaki

IPC分类号： D21H21/00 ,  C08B3/20 ,  C08B15/06 ,  D21H11/20

CPC分类号： C08B3/20 ,  D21H21/00 ,  C08B15/06 ,  D21H11/20

摘要： A method for producing a cellulose fiber-containing material, a method for producing reacted cellulose fibers, and a method for producing reacted fine fibers, applicable to mass production, are provided. The method for producing cellulose fiber-containing material P2 for use as cellulose fibers containing a reaction agent for obtaining reacted cellulose fibers P3 from cellulose fibers containing the reaction agent, includes subjecting raw material pulp to papermaking to obtain a strip-shaped pulp sheet having a Cobb sizing degree of 10 to 600 g/m2 as measured in accordance with JIS P 8140, and coating the pulp sheet with the reaction agent. Using the cellulose fiber-containing material P2 thus obtained, reacted cellulose fibers P3 are produced by reacting the reaction agent with the cellulose fibers. Reacted fine fibers P4 are produced by making the ash content of raw material pulp P1 to 20 mas% or lower and defibrating the reacted cellulose fibers P3.

公开(公告)号：EP4378978A3

公开(公告)日：2024-07-03

申请号：EP24170903.9

申请日：2017-02-24

申请人： International Paper Company

发明人： Mengkui, Luo

IPC分类号： C08H8/00 ,  D21C9/00 ,  D21H11/20

CPC分类号： C08B15/10 ,  C08H8/00 ,  D21H11/20 ,  D21C9/001 ,  D21C9/002

摘要： Pulps in accordance with certain embodiments include crosslinked cellulose fibers and have high brightness, reactivity, and intrinsic viscosity, and therefore can be well suited for use as a precursor in the production of low-color, high-viscosity cellulose derivatives. A method in accordance with the present technology includes forming a pulp from a cellulosic feedstock, bleaching the pulp, crosslinking cellulose fibers within the pulp while the pulp has a high consistency, and drying the pulp. Crosslinking the cellulose fibers can include exposing the fibers to a glycidyl ether crosslinker having two or more glycidyl groups and a molecular weight per epoxide within a range from 140 to 175. Another method in accordance with the present technology includes providing an aqueous suspension of pulp that includes chemical wood pulp fibers that were previously bleached and dried, crosslinking the fibers with such a glycidal ether crosslinker, and drying the pulp.

公开(公告)号：EP3212697A4

公开(公告)日：2018-04-25

申请号：EP15854637

申请日：2015-04-21

申请人： CELLUTECH AB

发明人： JOHANSSON ERIK ,  TCHANG CERVIN NICHOLAS ,  GORDEYEVA KORNELIYA ,  BERGSTRÖM LENNART ,  WÅGBERG LARS-ERIK

IPC分类号： C08J9/35 ,  B82Y30/00 ,  C08B15/00 ,  C08J9/28 ,  D21H11/18 ,  D21H11/20

CPC分类号： D21H11/18 ,  B01J20/24 ,  B01J20/28045 ,  B82Y30/00 ,  C08B15/02 ,  C08L1/04 ,  D21H11/20 ,  D21H27/10

摘要： The present invention relates to cellular solid materials comprising cellulose nanofibers (CNF) and an anionic or non-ionic surfactant, a method for preparation of such materials, as well as their use.

公开(公告)号：EP2997191B1

公开(公告)日：2018-03-14

申请号：EP14798476.9

申请日：2014-05-15

申请人： UPM-Kymmene Corporation

发明人： KAJANTO, Isko ,  TIENVIERI, Taisto ,  TAMPER, Juha

IPC分类号： D21H11/18 ,  D21H23/16

CPC分类号： D21H11/20 ,  D21H11/18 ,  D21H21/02 ,  D21H23/16

摘要： A method for making nanofibrillar cellulose includes mixing anionized or cationized cellulose fibers and cellulose pulp to a mixture including at least 1% and below 90 wt-% cellulose pulp based on dry weight, and subjecting the mixture to a refiner stage where the anionized or cationized cellulose fibers are at least partly reduced to nanofibrillar cellulose and the cellulose pulp acts as auxiliary pulp, and obtaining a mixture of nanofibrillar cellulose and cellulose pulp from the refining stage. The mixture can be used for making paper by adding it to base pulp.

公开(公告)号：EP2984483B1

公开(公告)日：2018-03-14

申请号：EP14720991.0

申请日：2014-04-11

申请人： UPM-Kymmene Corporation

发明人： LAUKKANEN, Antti ,  PERE, Jaakko ,  MIKKELSON, Atte

IPC分类号： G01N33/34 ,  D21H11/18 ,  D21H11/20

CPC分类号： G01N33/34 ,  C12Q1/40 ,  C12Y302/01 ,  C12Y302/01004 ,  C12Y302/01022 ,  C12Y302/01025 ,  C12Y302/01055 ,  D21H11/18 ,  D21H11/20 ,  G01N30/64 ,  G01N30/7233 ,  G01N30/96 ,  G01N33/343 ,  G01N2333/924 ,  G01N2333/94 ,  G01N2333/942

摘要： The present invention provides a method for determining carbonyl ratio and/or concentration of oxidized nanofibrillar cellulose in a sample. In accordance with the invention oxidized nanofibrillar cellulose comprised in the sample is enzymatically hydrolyzed into oxidized cellobioses which are specific markers to oxidized nanofibrillar cellulose. The cellobioses may be then analyzed and quantified to reveal the amount of oxidized nanofibrillar cellulose in the sample. A method for determining the concentration of oxidized nanofibrillar cellulose in a sample comprises steps of providing an analytical sample of material comprising oxidized nanofibrillar cellulose; hydrolyzing the analytical sample to breakdown products of oxidized nanofibrillar cellulosein presence of one or more enzymes; subjecting the breakdown products to a separation analysis to reveal the relative amounts of the breakdown products; and determining the concentration of oxidized nanofibrillar cellu-lose.

公开(公告)号：EP3289126A1

公开(公告)日：2018-03-07

申请号：EP16786018.8

申请日：2016-04-25

申请人： Spinnova Oy

发明人： LIUKKONEN, Johanna ,  HAAVISTO, Sanna ,  SELENIUS, Pasi ,  SALMELA, Juha ,  PORANEN, Janne

IPC分类号： D02G3/08 ,  D02G3/04 ,  D21F11/16

CPC分类号： D02G3/08 ,  D02G3/04 ,  D21F11/16 ,  D21H11/20

摘要： “The invention relates to a method and system for manufacturing a fibrous yarn. An aqueous suspension having fibers and at least one rheology modifier is directed through at least one nozzle to form at least one fibrous yarn. The said nozzle is adapted to swirl the flow of the aqueous suspension around the main flow axis of the said nozzle. Then the aqueous suspension at the exit of the nozzle is merged with at least one annular flow comprising at least one cross linking reagent. Then the fibrous yarn is subjected to pressing mechanism. The pressing mechanism is adapted to dewater and twist the fibrous yarn. Finally, a fibrous yarn product having improved physical properties is produced.”

公开(公告)号：EP3024976B1

公开(公告)日：2018-02-14

申请号：EP14742561.5

申请日：2014-06-24

申请人： UPM-Kymmene Corporation

发明人： LAUKKANEN, Antti ,  NUOPPONEN, Markus ,  LILLE, Martina

IPC分类号： D21H11/18 ,  D21H11/20 ,  D21H19/00 ,  D21H21/18 ,  D21H23/04 ,  C08B37/00 ,  C08B15/04 ,  C08B15/08 ,  D21B1/02 ,  D21D1/20

CPC分类号： C08B15/02 ,  C08B15/04 ,  C08B15/08 ,  C09D101/02 ,  C09D101/04 ,  D21H11/18 ,  D21H11/20 ,  D21H19/00 ,  D21H19/12 ,  D21H21/18 ,  D21H23/04 ,  D21H23/22

摘要： The invention relates to a method for modifying nanofibrillar cellulose composition, comprising—preparing fibrous dispersion of ionically charged nanofibrillar cellulose (NFC), and—applying heat treatment at a temperature of at least 90° C. to the fibrous dispersion until the viscosity of NFC starts to decrease. The viscosity of the heat-treated NFC is reversible by applying shear forces to the NFC.

公开(公告)号：EP3260861A1

公开(公告)日：2017-12-27

申请号：EP16752462.8

申请日：2016-02-16

申请人： Nippon Paper Industries Co., Ltd.

发明人： NAKATANI, Takeshi ,  SATO, Shinji ,  KIMURA, Koji

IPC分类号： G01N33/00 ,  G01N33/36

CPC分类号： G01N33/36 ,  C08J3/03 ,  C08J3/09 ,  C08J3/215 ,  C08J2301/02 ,  D21H11/18 ,  D21H11/20 ,  D21H17/67 ,  G01N1/38 ,  G01N33/00 ,  G02B21/34

摘要： Herein provided are methods for evaluating cellulose nanofiber dispersions, comprising the steps of: (1) preparing a cellulose nanofiber dispersion; (2) adding a color material into the cellulose nanofiber dispersion; and (3) observing the cellulose nanofiber dispersion to which a colored pigment has been added with a light microscope. The methods allow for easy evaluation of whether or not agglomerates of cellulose nanofibers exist in cellulose nanofiber dispersions, which cannot be visually determined.

摘要翻译： 本文提供了用于评估纤维素纳米纤维分散体的方法，其包括以下步骤：（1）制备纤维素纳米纤维分散体; （2）向纤维素纳米纤维分散液中添加色材; （3）用光学显微镜观察添加了有色颜料的纤维素纳米纤维分散液。 该方法可以容易地评价纤维素纳米纤维的团块是否存在于纤维素纳米纤维分散体中，这不能用肉眼确定。

公开(公告)号：EP3135488A4

公开(公告)日：2017-11-08

申请号：EP15782224

申请日：2015-04-20

申请人： OJI HOLDINGS CORP

发明人： FUSHIMI HAYATO ,  MIKAMI EIICHI ,  TANAKA HIROKI ,  HAN JINTONG

IPC分类号： B32B27/12 ,  B32B5/02 ,  B32B7/12 ,  B32B27/10 ,  D21H11/18 ,  D21H11/20 ,  D21H19/80 ,  D21H19/84 ,  D21H27/32

CPC分类号： B32B27/12 ,  B32B5/022 ,  B32B7/12 ,  B32B27/10 ,  B32B2457/00 ,  B32B2457/20 ,  D21H11/18 ,  D21H11/20 ,  D21H19/80 ,  D21H19/84 ,  D21H27/32

公开(公告)号：EP3237453A1

公开(公告)日：2017-11-01

申请号：EP15828500.7

申请日：2015-12-21

申请人： UPM-Kymmene Corporation

发明人： KAJANTO, Isko

IPC分类号： C08B15/04

CPC分类号： C08B15/04 ,  A61K8/027 ,  A61K8/731 ,  A61K9/70 ,  A61K47/38 ,  A61K2800/10 ,  A61Q19/00 ,  D01F2/24 ,  D21H11/18 ,  D21H11/20

摘要： A process for producing an oxidized nanofibrillar cellulose hydrogel is disclosed, wherein the process comprises oxidizing cellulose pulp fibers in the presence of hypochlorite as an oxidant and a heterocyclic nitroxyl radical as a catalyst; and disintegrating the oxidized cellulose pulp fibers to obtain a nanofibrillar cellulose hydrogel; wherein all steps of the process after oxidizing are performed under aseptic conditions. An oxidized nanofibrillar cellulose hydrogel and a system for producing the same are also disclosed.

摘要翻译： 公开了一种生产氧化纳米纤维状纤维素水凝胶的方法，其中该方法包括在作为氧化剂的次氯酸盐和作为催化剂的杂环硝酰基的存在下氧化纤维素纸浆纤维; 并分解氧化纤维素纸浆纤维以获得纳米纤维状纤维素水凝胶; 其中氧化后的所有步骤在无菌条件下进行。 还公开了氧化的纳米纤维状纤维素水凝胶及其制备系统。