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公开(公告)号：US20190276959A1
公开(公告)日：2019-09-12
申请号：US16338197
申请日：2017-09-29
Applicant: OJI HOLDINGS CORPORATION
Inventor： Yusuke TODOROKI , Yuichi NOGUCHI , lkue HOMMA , Mengchen ZHAO
IPC: D04H1/26 , D21H11/20 , D06M11/71 , D06M13/432
Abstract: A composition provides a high-bulk cellulose fiber-containing sheet, in which the water-retaining ability of the cellulose fibers is sufficiently high, and the water-absorbing rate is large. The composition contains cellulose fibers having phosphoric acid groups or phosphoric acid group-derived substituents. In at least a part of the cellulose fibers, the phosphoric acid groups or the phosphoric acid group-derived substituents are crosslinked. The number of crosslinking points in the cellulose fibers, which is calculated according to the following Equation (1), is 0.20 mmol/g or more, and the water content is 50% by mass or less, with respect to the total mass of the composition: Number of crosslinking points=(amount of strongly acidic groups contained in cellulose fibers−amount of weakly acidic groups contained in cellulose fibers)/2 . . . Equation (1).
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2.发明申请PHOSPHORIC ACID-ESTERIFIED FINE CELLULOSE FIBER AND METHOD FOR PRODUCING THE SAME 审中-公开磷酸 - 精制纤维素纤维及其制造方法公开(公告)号：US20160115249A1
公开(公告)日：2016-04-28
申请号：US14891255
申请日：2014-05-16
Applicant: OJI HOLDINGS CORPORATION
Inventor： Yuichi NOGUCHI , Yasutomo NOISHIKI , Ikue HOMMA
IPC: C08B5/00
Abstract: Objects of the present invention are to provide a phosphoric acid-esterified fine cellulose fiber of which slurry shows superior transparency, and to provide a method for producing a phosphorylated fine cellulose fiber showing superior transparency with good efficiency and high yield. According to the present invention, there is provided a phosphoric acid-esterified fine cellulose fiber, of which 0.2 mass % aqueous dispersion shows a solution haze of 15% or lower.
Abstract translation: 本发明的目的是提供一种磷酸酯化的细纤维素纤维，其中浆液显示出优异的透明性，并且提供了以高效率和高产率显示出优异的透明性的磷酸化细纤维素纤维的制备方法。 根据本发明，提供了一种磷酸酯化的细纤维素纤维，其中0.2质量％的水分散体显示出15％以下的溶液雾度。
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公开(公告)号：US20240141591A1
公开(公告)日：2024-05-02
申请号：US18276708
申请日：2022-02-03
Applicant: OJI HOLDINGS CORPORATION
Inventor： Rina SHISHIDO , Yuichi NOGUCHI , Hirokazu SUNAGAWA
Abstract: Provided are: a sheet which has high transparency, in which yellowing due to heating is suppressed, and which has high tensile elastic modulus and excellent flexibility; and a layered body having the sheet. The sheet of the present invention contains ultrafine fibrous cellulose having a fiber width of 10 nm or less, and a cellulose derivative having a weight-average molecular weight of 1.0×104 or more and 3.0×105 or less.
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公开(公告)号：US20210253830A1
公开(公告)日：2021-08-19
申请号：US17271052
申请日：2019-08-28
Applicant: OJI HOLDINGS CORPORATION
Inventor： Mengchen ZHAO , Yusuke TODOROKI , Yuichi NOGUCHI
Abstract: It is an object of the present invention to provide an ultrafine cellulose fiber-containing composition, regarding which an ultrafine cellulose fiber-dispersed organic solvent slurry can exhibit high viscosity and high transparency. The present invention relates to a cellulose fiber-containing composition comprising cellulose fibers with a fiber width of 1000 nm or less having anionic groups, and metal ions, wherein the cellulose fiber-containing composition comprising organic onium ions as counterions of the anionic groups, and when a solid in the cellulose fiber-containing composition is converted to an absolute dry solid, the content of the metal ions in the absolute dry solid is 80 ppm or more and 700 ppm or less.
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公开(公告)号：US20200208350A1
公开(公告)日：2020-07-02
申请号：US16814501
申请日：2020-03-10
Applicant: OJI HOLDINGS CORPORATION
Inventor： Yuichi NOGUCHI , Ikue HOMMA , Yusuke MATSUBARA
Abstract: It is an object of the present invention to provide a method for producing ultrafine fibrous cellulose, which is capable of efficiently obtaining ultrafine fibrous cellulose having phosphoric acid groups with a high yield. The present invention relates to a method for producing fibrous cellulose having a fiber width of 1000 nm or less, comprising: a (A) of introducing phosphoric acid groups into cellulose fibers to form crosslinked structures via the phosphoric acid groups, thereby obtaining crosslinked phosphorylated cellulose fibers, a (B) of breaking some or all of the crosslinked structures to obtain crosslink-broken phosphorylated cellulose fibers, and a (C) of performing a mechanical treatment on the crosslink-broken phosphorylated cellulose fibers to obtain fibrous cellulose having a fiber width of 1000 nm or less, wherein, in the (A), crosslinked structures in an amount of 0.05 mmol/g or more and 2.0 mmol/g or less are formed, and the (B) is a step of performing the hydrolysis of the crosslinked structures in an aqueous solvent with pH 3 or more.
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Patent Agency Ranking
公开(公告)号：US20200032455A1
公开(公告)日：2020-01-30
申请号：US16338255
申请日：2017-09-29
Applicant: OJI HOLDINGS CORPORATION
Inventor： Mengchen ZHAO , Yuichi NOGUCHI , lkue HOMMA , Yusuke TODOROKI
Abstract: It is an object of the present invention to optimize a bleaching process in a step of producing phosphorylated cellulose fibers. The present invention relates to a pulp comprising cellulose fibers having 0.5 mmol/g or more of phosphoric acid groups or phosphoric acid group-derived substituents, wherein when the pulp is processed into a sheet and four sheets are laminated on one another, the ISO whiteness of the laminate is 82% or more. Moreover, when the pulp of the present invention is processed into a sheet and four sheets are then laminated on one another, the b* value of the obtained laminate according to the L*a*b* color system is 5.5 or less.
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公开(公告)号：US20190040213A1
公开(公告)日：2019-02-07
申请号：US16074638
申请日：2017-02-03
Applicant: OJI HOLDINGS CORPORATION
Inventor： Yoshiyuki TSUTSUMI , Koh SAKAI , Yuichi NOGUCHI
IPC: C08J5/06 , C08J3/03 , C08K7/02 , C08L1/02 , C08L101/12
Abstract: It is an object of the present invention to provide a resin composite that is excellent in water resistance and is capable of exerting sufficient strength even under wet conditions. The present invention relates to a resin composite comprising a resin, fibers having an ionic functional group, and a polyvalent ion. The fibers having an ionic functional group are preferably cellulose fibers having a fiber width of 1000 nm or less.
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公开(公告)号：US20170226398A1
公开(公告)日：2017-08-10
申请号：US15322345
申请日：2015-06-29
Applicant: OJI HOLDINGS CORPORATION
Inventor： Takayuki SHIMAOKA , Yuichi NOGUCHI , Ikue HOMMA , Mitsuru TSUNODA
Abstract: The object is to provide a subterranean formation processing composition which has a highly stable viscosity against change in temperature and a high water stopping property. A subterranean formation processing composition comprising cellulose fibers wherein the composition contains ultrafine cellulose fibers having 0.14 to 2.5 mmol/g of a substituent is used. The substituent is preferably an anion group, particularly a phosphoric acid group. The present invention relates to various fluids which are used in well processing. The present invention relates to a method for processing a subterranean formation, for example, drilling of an exploratory well or a wildcat, an appraisal well, an exploratory well or an exploration well, a delineation well, a development well, a production well, an injection well, an observation well, and a service well; cementing; fracturing; and a method for producing petroleum resources. The present invention provides also a cellulose fiber-containing composition which is not limited to the subterranean formation processing use.
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公开(公告)号：US20180230279A1
公开(公告)日：2018-08-16
申请号：US15750031
申请日：2016-08-05
Applicant: Oji Holdings Corporation
Inventor： Go BANZASHI , Koh SAKAI , Yuichi NOGUCHI
CPC classification number: C08J5/18 , B32B5/02 , B32B5/26 , B32B7/02 , C08B5/00 , C08B15/02 , C08J2301/10 , C08J2301/16 , C08L1/02 , C08L1/04 , C08L1/16 , D01F1/10 , D01F2/00 , D01F2/24 , D10B2201/20 , D21H11/18 , D21H11/20 , D21H17/64 , D21H17/66 , D21H21/20 , D21H25/02
Abstract: An object of the present invention is to improve the strength of a sheet containing substituent-introduced ultrafine fiber under high-humidity conditions while maintaining its high transparency. The sheet of the present invention comprises ultrafine fiber having an ionic substituent, and a divalent or higher metal, and has a haze of 10.0% or less.
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公开(公告)号：US20170226407A1
公开(公告)日：2017-08-10
申请号：US15519229
申请日：2015-10-13
Applicant: Oji Holdings Corporation
Inventor： Ikue HOMMA , Takayuki SHIMAOKA , Moe MIZUKAMI , Takuri OZAKI , Yuichi NOGUCHI , Mitsuru TSUNODA
Abstract: An object of the present invention is to provide a salt water thickener that uniformly (favorably) disperses ultrafine cellulose fibers even in a liquid containing a salt (electrolyte). The salt water thickener comprises ultrafine cellulose fibers and a water-soluble polymer and can thereby uniformly disperse the ultrafine cellulose fibers even in a liquid containing a salt. The salt water thickener of the present invention is uniformly dispersed even in a liquid containing a salt and therefore exerts a high viscosity. The salt water thickener of the present invention can also be used as an additive for a fluid. The salt water thickener of the present invention can be used for purposes, for example, subterranean formation processing.
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