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公开(公告)号：US20210261758A1
公开(公告)日：2021-08-26
申请号：US17254031
申请日：2019-07-03
Applicant: Daio Paper Corporation
Inventor： Ikko Matsusue
Abstract: A fibrous cellulose-containing material which is excellent in dispersibility of cellulose fiber, is easy to dewater, and is not required to contain an organic solvent, and a method for producing the same; and dried fibrous cellulose and a fibrous cellulose composite resin each obtained using the fibrous cellulose-containing material and a method for producing the same. A dispersion liquid of cellulose microfiber is prepared by fibrillating raw material pulp to the extent that the average fiber width is 0.1 μm or more, a fibrous cellulose-containing material is prepared by mixing the dispersion liquid with resin powder having an average particle size of 1 to 1,500 μm, dried fibrous cellulose is prepared by drying the fibrous cellulose-containing material, and the dried fibrous cellulose is kneaded to obtain a fibrous cellulose composite resin.
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公开(公告)号：US20190382948A1
公开(公告)日：2019-12-19
申请号：US16485713
申请日：2018-02-23
Applicant: Daio Paper Corporation
Inventor： Ikko Matsusue
IPC: D06M11/70 , D06M13/432 , D21H11/20
Abstract: A method is for manufacturing cellulose microfibers in which a problem of yellowing of cellulose microfibers to be obtained was solved, and cellulose microfibers.As to a method for manufacturing cellulose microfibers, cellulose fibers are added with an additive (A) consisting of at least one of a phosphorous acid and a metal phosphite and an additive (B) consisting of at least one of urea and a urea derivative, heated and washed, then fibrillated. Also, as to cellulose microfibers, the fiber width is 1 to 1000 nm, and a part of hydroxy groups of cellulose fibers is substituted with a functional group represented by a predetermined structural formula to introduce an ester of phosphorous acid.
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公开(公告)号：US12240966B2
公开(公告)日：2025-03-04
申请号：US17607578
申请日：2020-06-23
Applicant: DAIO PAPER CORPORATION
Inventor： Yu Ochiai , Ikko Matsusue , Junya Okawa
Abstract: A cellulose fiber composite recycled resin having excellent strength, and a method for producing the same. The cellulose fiber composite recycled resin contains a recycled resin and a mixture of fibrous cellulose, at least one of resin powders and resin pellets, and at least one substance selected from the group consisting of phthalic acid, phthalates, derivatives of phthalic acid, and derivatives of phthalates. For producing this composite resin, at least one of resin powders and resin pellets are added to a slurry of cellulose fibers to obtain a first mixture, a recycled resin is mixed into the first mixture to obtain a second mixture, and the second mixture is kneaded, wherein part or all of the cellulose fibers are fine fibers.
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公开(公告)号：US11584803B2
公开(公告)日：2023-02-21
申请号：US17049825
申请日：2019-05-17
Applicant: Daio Paper Corporation
Inventor： Ikko Matsusue
Abstract: A fine cellulose fiber in which when the fine cellulose fiber is formed into a dispersion, the dispersion has very high light transmittance and viscosity, and a method for producing the fine cellulose fiber. The fine cellulose fiber has a fiber width of 1 to 200 nm. A part of hydroxy groups of the cellulose fiber are substituted with a predetermine functional group to introduce an ester of phosphorus-oxo acid, and the introduction amount of the functional group is more than 2.0 mmol per 1 g of the cellulose fiber. For producing the fine cellulose fiber, to cellulose fiber is added a solution having a pH of less than 3.0 and including an additive (A) containing at least one of a phosphorus-oxo acid and a phosphorus-oxo acid metal salt and an additive (B) containing at least one of urea and a urea derivative, and the mixture is heated to perform fibrillation.
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公开(公告)号：US20210214464A1
公开(公告)日：2021-07-15
申请号：US16967482
申请日：2019-02-05
Applicant: Daio Paper Corporation
Inventor： Ikko Matsusue , Aya Fujita
Abstract: A fibrous cellulose having an excellent resin reinforcing effect, a method for manufacturing the fibrous cellulose, and a resin composition having high strength. The fibrous cellulose is microfiber cellulose having an average fiber diameter of 1 μm or more, and is hydrophobically modified. The method for manufacturing fibrous cellulose includes defibrating raw material fiber to obtain microfiber cellulose with an average fiber diameter of 1 μm or more, and hydrophobically modifying the microfiber cellulose. Further, the resin composition contains the fibrous cellulose and resin.
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Patent Agency Ranking
公开(公告)号：US20210189637A1
公开(公告)日：2021-06-24
申请号：US17195105
申请日：2021-03-08
Applicant: Daio Paper Corporation
Inventor： Ikko Matsusue
IPC: D06M11/70 , D06M13/432 , D21H11/20
Abstract: A method is for manufacturing cellulose microfibers in which a problem of yellowing of cellulose microfibers to be obtained was solved, and cellulose microfibers. As to a method for manufacturing cellulose microfibers, cellulose fibers are added with an additive (A) consisting of at least one of a phosphorous acid and a metal phosphite and an additive (B) consisting of at least one of urea and a urea derivative, heated and washed, then fibrillated. Also, as to cellulose microfibers, the fiber width is 1 to 1000 nm, and a part of hydroxy groups of cellulose fibers is substituted with a functional group represented by a predetermined structural formula to introduce an ester of phosphorous acid.
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公开(公告)号：US20240376663A1
公开(公告)日：2024-11-14
申请号：US18293231
申请日：2022-08-04
Applicant: Daio Paper Corporation
Inventor： Ryunosuke Aoki , Ikko Matsusue , Naoto Umeguchi
IPC: D06M13/432
Abstract: A method for preparing carbamated cellulose fibers applicable to mass production is provided. The method for preparing carbamated cellulose fibers in which hydroxyl groups of cellulose fibers have partially or fully been modified with carbamate groups, includes heating a pulp sheet which has been formed into a strip shape by subjecting a raw material pulp to papermaking and contains urea or a derivative thereof, between a pair of rolls while passing therebetween, to cause the modification.
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公开(公告)号：US12037482B2
公开(公告)日：2024-07-16
申请号：US17254031
申请日：2019-07-03
Applicant: Daio Paper Corporation
Inventor： Ikko Matsusue
Abstract: A fibrous cellulose-containing material which is excellent in dispersibility of cellulose fiber, is easy to dewater, and is not required to contain an organic solvent, and a method for producing the same; and dried fibrous cellulose and a fibrous cellulose composite resin each obtained using the fibrous cellulose-containing material and a method for producing the same. A dispersion liquid of cellulose microfiber is prepared by fibrillating raw material pulp to the extent that the average fiber width is 0.1 μm or more, a fibrous cellulose-containing material is prepared by mixing the dispersion liquid with resin powder having an average particle size of 1 to 1,500 μm, dried fibrous cellulose is prepared by drying the fibrous cellulose-containing material, and the dried fibrous cellulose is kneaded to obtain a fibrous cellulose composite resin.
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公开(公告)号：US11634509B2
公开(公告)日：2023-04-25
申请号：US16967482
申请日：2019-02-05
Applicant: Daio Paper Corporation
Inventor： Ikko Matsusue , Aya Fujita
Abstract: A fibrous cellulose having an excellent resin reinforcing effect, a method for manufacturing the fibrous cellulose, and a resin composition having high strength. The fibrous cellulose is microfiber cellulose having an average fiber diameter of 1 μm or more, and is hydrophobically modified. The method for manufacturing fibrous cellulose includes defibrating raw material fiber to obtain microfiber cellulose with an average fiber diameter of 1 μm or more, and hydrophobically modifying the microfiber cellulose. Further, the resin composition contains the fibrous cellulose and resin.
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公开(公告)号：US20210230312A1
公开(公告)日：2021-07-29
申请号：US17053867
申请日：2019-05-24
Applicant: Daio Paper Corporation
Inventor： Ikko Matsusue
Abstract: A fibrous cellulose having a high resin reinforcing effect and a method for manufacturing the same, and a fibrous cellulose composite resin having high strength and a method for manufacturing the same. A fibrous cellulose has an average fiber width of 0.1 μm or more, an average fiber length of 0.02 to 3.0 mm, and a fibrillation ratio of 1.0% or more. A kneaded product of this fibrous cellulose and a resin is formed into a fibrous cellulose composite resin. In manufacturing the fibrous cellulose, a raw material fiber is defibrated so as to have an average fiber width of 0.1 μm or more, an average fiber length of 0.02 to 3.0 mm, and a fibrillation ratio of 1.0% or more. The fibrous cellulose obtained by this method and a resin are kneaded to manufacture a fibrous cellulose composite resin.
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