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1.发明公开公开(公告)号：US20240309208A1
公开(公告)日：2024-09-19
申请号：US18672123
申请日：2024-05-23
发明人： Hirofumi Ono , Kazufumi Kawahara , Ryosuke Ozawa , Masahiro Ohga
CPC分类号： C08L77/06 , C08B3/06 , C08B3/20 , C08J5/06 , C08L1/08 , C08L1/10 , D21H11/18 , D21H11/20 , C08J2377/06 , C08J2401/10
摘要： Provided is a resin composite having high mechanical properties which make the resin composite moldable into and usable as members for use in applications such as vehicle-mounted members and electrical materials. The resin composite comprises 0.5-40 mass % chemically modified, fine cellulose fibers and a resin, wherein the chemically modified, fine cellulose fibers have a pyrolysis initiation temperature (TD) of 270° C. or higher, a number-average fiber diameter of 10 nm or larger but less than 1 μm, and a degree of crystallinity of 60% or higher. In a preferred embodiment, the chemically modified, fine cellulose fibers have a coefficient of variation (CV) in DS unevenness ratio, DSs/DSt, of 50% or less, the DS unevenness ratio being the ratio of the modification degree (DSs) of the surface layers of the fibers to the modification degree (DSt) of the whole of the fibers.
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公开(公告)号：US20240240400A1
公开(公告)日：2024-07-18
申请号：US18619339
申请日：2024-03-28
发明人： John Claude Husband , Per Svending , David Robert Skuse , Tafadzwa Motsi , Mikko Likitalo , Alan Coles
IPC分类号： D21C9/00 , D21B1/30 , D21B1/32 , D21D1/20 , D21H11/04 , D21H11/18 , D21H11/20 , D21H15/02 , D21H19/38
CPC分类号： D21C9/007 , D21B1/30 , D21B1/32 , D21C9/001 , D21D1/20 , D21H5/1236 , D21H11/04 , D21H11/18 , D21H11/20 , D21H19/38 , D21H19/385
摘要： Methods of preparing partially dried or essentially completely dried compositions comprising microfibrillated cellulose and an inorganic particulate material may include microfibrillating a fibrous substrate comprising cellulose in an aqueous environment by grinding in the presence of an inorganic particulate material to form an aqueous composition comprising microfibrillated cellulose and inorganic particulate material, wherein the fibrous substrate comprising cellulose has a Canadian Standard freeness equal to or less than 450 cm, wherein the fibrous substrate to the inorganic particulate material are in a ratio of about 99.5:0.5 to about 0.5:99.5, and wherein the microfibrillated cellulose has a fibre steepness of from about 20 to about 50; by treating the aqueous composition comprising microfibrillated cellulose and inorganic particulate material to remove at least a portion or substantially all of the water of the aqueous composition to form a partially dried or essentially completely dried composition comprising microfibrillated cellulose and inorganic particulate material.
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公开(公告)号：US12012699B2
公开(公告)日：2024-06-18
申请号：US17744057
申请日：2022-05-13
申请人： ecobrain AG
发明人： Dirk Harste
摘要： The invention relates to a process for producing a thermoformable and/or embossable particle/polymer composite using a substrate S based on shredded polymer-coated paper and a thermoplastic polymer P, therewith providing a new method of recycling/upcycling paper waste. Furthermore, a process for the manufacturing of a molded article obtained from the paper-based particle/polymer composite and its use as an element in buildings or in furniture are disclosed.
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公开(公告)号：US12000066B2
公开(公告)日：2024-06-04
申请号：US16982824
申请日：2018-03-29
摘要： Disclosed are processes for manufacturing cross-linked cellulosic fibers and tissue products comprising cross-linked cellulosic fibers, manufactured by reacting an oxidized polyol, in particular, an oxidized sugar having at least two aldehyde groups with a plurality of cellulosic fibers to yield treated fibers and heating the treated fibers at a temperature greater than about 140° C. to cure the treated fibers. In particular, said sugar is sucrose and the oxidising agent comprises hydrogen peroxide. The instant cross-linked fibers are manufactured without well-known cross-linking agents such as formaldehyde or polycarboxylic acids, and have good brightness and color and resist yellowing. Furthermore, the cross-linked cellulosic fibers are generally free from off odors and the instant cross-linked cellulosic fibers have enhanced properties, such as improved wet bulk, compared to uncross-linked fibers.
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公开(公告)号：US11970820B2
公开(公告)日：2024-04-30
申请号：US17981769
申请日：2022-11-07
发明人： Jonathan Y. Chen
IPC分类号： D21H11/20 , A61L15/28 , C08B16/00 , C08L1/02 , D01G11/00 , D21H11/12 , D21H11/16 , D21H27/00 , B82Y5/00 , B82Y30/00
CPC分类号： D21H11/20 , A61L15/28 , C08B16/00 , C08L1/02 , D01G11/00 , D21H11/12 , D21H11/16 , D21H27/00 , B82Y5/00 , B82Y30/00 , C08L2207/20 , D10B2201/02
摘要： Cellulose materials and methods of making the cellulose materials are described herein. The method can include contacting a cotton fabric with an oxidizing system to obtain an oxidized cotton material and processing the oxidized cotton material to form the cellulose material. The oxidizing system can include an aqueous mixture of a N-oxyl compound and a hypochlorite compound. During oxidation, the p11 of the aqueous mixture can be maintained at from 8.5 to 11. Cellulose products can be formed from the cellulose materials. For example, the cellulose products can be used to form a packaging material, a biomedical device or implant, a drug delivery material, a fiber, a textile material, a template for electronic components, or a separation membrane. Methods of making the cellulose product include dissolving or suspending an active ingredient in a medium comprising the cellulose material.
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公开(公告)号：US11939725B2
公开(公告)日：2024-03-26
申请号：US17413684
申请日：2019-12-11
申请人： MONDI AG
摘要： A hot-extraction paper consisting substantially of cellulose and manufacturing assistants needed in cellulose and manufacturing assistants needs in cellulose production, such as pH modifiers based on acids and/or bases, the paper comprises exclusively cellulose having fibre lengths of at least 2.0 mm on length-weighted average, more particularly at least 2.5 mm on length-weighted average, and has isotropic extension properties which are substantially equal in machine and cross directions and amount to at least 7.5%, more particularly at least 8.5%.
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公开(公告)号：US11773536B2
公开(公告)日：2023-10-03
申请号：US16624957
申请日：2018-05-10
申请人： UNICHARM CORPORATION
IPC分类号： D21C5/02 , A61F13/53 , A61L2/18 , A61L2/20 , A61L11/00 , B29B17/02 , D21H11/14 , D21H11/20 , B29L31/48 , B09B3/00 , B09B3/80
CPC分类号： D21C5/022 , A61F13/53 , A61L2/18 , A61L2/202 , A61L11/00 , B09B3/0075 , B09B3/80 , B29B17/02 , D21H11/14 , D21H11/20 , A61F2013/530116 , B29B2017/0293 , B29L2031/4878
摘要： The purpose of the present disclosure is to provide a method for producing pulp fibres for saccharification from the pulp fibres of used sanitary items, said pulp fibres for saccharification having low lignin contents distributed within a narrow range, and enabling the production of pulp fibres for saccharification having superior saccharification properties. The production method according to the present disclosure is characterised by comprising the following: a step for supplying a mixed solution (51) containing pulp fibres and highly-absorbent polymers sourced from used sanitary items to a treatment tank (31) via a mixed-solution supply port (32); a step for supplying an ozone-containing gas (53) to a treatment solution (52) within the treatment tank (31) via an ozone-containing-gas supply port (43); a step for lifting the ozone-containing gas (53) whilst lowering the pulp fibres and highly-absorbent polymers within the treatment tank (31), thereby bringing the ozone-containing gas (53) into contact with the pulp fibres and highly-absorbent polymers, and forming pulp fibres for saccharification from the pulp fibres; and a step for discharging the treatment solution (52) via a treatment-solution discharge port (33). The method is further characterised in that the pulp fibres for saccharification have lignin contents of 0.1% or less.
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公开(公告)号：US20230212341A1
公开(公告)日：2023-07-06
申请号：US18174747
申请日：2023-02-27
IPC分类号： C08F251/02 , B01J20/24 , D21H17/37 , C08B15/00 , D21C9/00 , D01F11/02 , B01J20/26 , B01J20/28 , C08B3/08 , D21H11/20 , D21H21/22 , D21H27/00 , D21H11/16 , D01F2/00
CPC分类号： C08F251/02 , B01J20/24 , B01J20/265 , B01J20/267 , B01J20/28023 , C08B3/08 , C08B15/005 , D01F11/02 , D21C9/005 , D21H11/16 , D21H11/20 , D21H17/37 , D21H21/22 , D21H27/002 , D01F2/00
摘要： Grafted, crosslinked cellulosic materials include cellulose fibers and polymer chains composed of at least one monoethylenically unsaturated acid group-containing monomer (such as acrylic acid) grafted thereto, in which one or more of said cellulose fibers and said polymer chains are crosslinked (such as by intra-fiber chain-to-chain crosslinks). Some of such materials are characterized by a wet bulk of about 10.0-17.0 cm3/g, an IPRP value of about 1000 to 7700 cm2/MPa·sec, and/or a MAP value of about 7.0 to 38 cm H2O. Methods for producing such materials may include grafting polymer chains from a cellulosic substrate, followed by treating the grafted material with a crosslinking agent adapted to effect crosslinking of one or more of the cellulosic substrate or the polymer chains. Example crosslinking mechanisms include esterfication reactions, ionic reactions, and radical reactions, and example crosslinking agents include pentaerythritol, homopolymers of the graft species monomer, and hyperbranched polymers.
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公开(公告)号：US20230062813A1
公开(公告)日：2023-03-02
申请号：US17981769
申请日：2022-11-07
发明人： Jonathan Y. CHEN
IPC分类号： D21H11/20 , A61L15/28 , D21H27/00 , D21H11/16 , C08B16/00 , C08L1/02 , D01G11/00 , D21H11/12
摘要： Cellulose materials and methods of making the cellulose materials are described herein. The method can include contacting a cotton fabric with an oxidizing system to obtain an oxidized cotton material and processing the oxidized cotton material to form the cellulose material. The oxidizing system can include an aqueous mixture of a N-oxyl compound and a hypochlorite compound. During oxidation, the p11 of the aqueous mixture can be maintained at from 8.5 to 11. Cellulose products can be formed from the cellulose materials. For example, the cellulose products can be used to form a packaging material, a biomedical device or implant, a drug delivery material, a fiber, a textile material, a template for electronic components, or a separation membrane. Methods of making the cellulose product include dissolving or suspending an active ingredient in a medium comprising the cellulose material.
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公开(公告)号：US20220396638A1
公开(公告)日：2022-12-15
申请号：US17850514
申请日：2022-06-27
发明人： Shou HIASA , Hiromi UCHIMURA , Tomoki YABUTANI
摘要： [Object] An object is to provide a sulfonated fine cellulose fiber having excellent transparency a sulfonated pulp fiber suitable for the sulfonated fine cellulose fiber, a method for producing these fibers, and a derivative pulp containing the sulfonated pulp fiber.
[Means for achieving the object] The sulfonated pulp fiber of the present invention is a pulp fiber comprising a plurality of cellulose fibers, wherein a part of hydroxyl groups of the cellulose fibers of the pulp fiber is substituted with sulfo groups, an introduction amount of sulfur attributable to the sulfo groups is adjusted to be higher than 0.42 mmol/g while maintaining a fiber shape, and a water retention value of the pulp fiber is adjusted to 150% or more. Since the sulfonated pulp fiber has a predetermined water retaining property or more while maintaining the fiber shape, the degree of flexibility in handling can be improved.
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