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公开(公告)号：US20240261207A1
公开(公告)日：2024-08-08
申请号：US18564333
申请日：2022-04-25
Applicant: DAICEL CORPORATION
Inventor： Keiko KOBAYASHI , Sadaki TAKATA , Masaya OMURA
CPC classification number: A61K8/731 , A61Q19/00 , A61K2800/10 , A61K2800/622 , A61K2800/654
Abstract: Composite particles include particles of a cellulose derivative and a film covering a surface of the particles of the cellulose derivative. The film is formed of a surface treatment compound that dissolves in water and/or an organic solvent. A cosmetic composition contains the composite particles. A method for producing the composite particles includes mixing particles of a cellulose derivative and a surface treatment compound, wherein the particles of the cellulose derivative and the surface treatment compound are stirred and mixed in a solvent that dissolves the surface treatment compound; and drying a solid content containing the particles of the cellulose derivative, wherein the solid content is washed and dried. A preferable solvent is water or an alcohol.
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2.发明申请公开(公告)号：US20160009006A1
公开(公告)日：2016-01-14
申请号：US14764095
申请日：2014-01-27
Applicant: DAICEL CORPORATION
Inventor： Tomoya MIZUTA , Takuya OSAKA , Katsuhiro NAKAGUCHI , Arimichi OKUMURA , Hiroto MIYAKE , Masaya OMURA , Naotaka NISHIO
CPC classification number: B29C43/36 , B29C33/0011 , B29C33/405 , B29C33/424 , B29C43/021 , B29C59/022 , B29C59/026 , B29K2883/00 , B29K2913/00 , B29L2031/757 , B81C99/009 , C08L83/04 , G03F7/0002 , C08L83/00
Abstract: Provided is a sheet-shaped mold possessing a high strength and having a low breakage rate in demolding even in a case where the mold is thin and has a large-area. The sheet-shaped mold is prepared by combining a cured silicone rubber containing a polyorganosiloxane and a fiber for reinforcing the cured silicone rubber. The fiber may comprise a cellulose nanofiber. The sheet-shaped mold may have an uneven pattern on at least one surface (or side) thereof. The fiber may be surface-treated with a hydrophobizing agent. The fiber may forma nonwoven fabric, and the nonwoven fabric may be impregnated with the cured silicone rubber. The cured silicone rubber may comprise a two-component curable silicone rubber having a polydimethylsiloxane unit. The sheet-shaped mold may be a mold for nanoimprint lithography using a photo-curable resin.
Abstract translation: 即使在模具薄且面积大的情况下，也提供了具有高强度且脱模时断裂率低的片状模具。 通过将含有聚有机硅氧烷的固化硅橡胶和用于增强固化的硅橡胶的纤维组合而制备片状模具。 纤维可以包含纤维素纳米纤维。 片状模具可以在其至少一个表面（或侧面）上具有不均匀的图案。 纤维可以用疏水化剂进行表面处理。 纤维可以形成非织造织物，并且非织造织物可以用固化的硅橡胶浸渍。 固化的硅橡胶可以包含具有聚二甲基硅氧烷单元的双组分可固化的硅橡胶。 片状模具可以是使用光固化树脂的纳米压印光刻的模具。
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3.发明公开公开(公告)号：US20230301897A1
公开(公告)日：2023-09-28
申请号：US18010591
申请日：2021-07-08
Applicant: DAICEL CORPORATION
Inventor： Keiko KOBAYASHI , Masaya OMURA , Takuya HISAZUMI , Hidetaka HAYAMIZU , Jumpei IIO
CPC classification number: A61K8/731 , A61K8/025 , A61Q19/00 , A61K2800/412 , A61K2800/654 , A61K2800/10
Abstract: Provided are cellulose acetate particles. The cellulose acetate particles have an average particle size of 80 nm or greater and 100 μm or less, a sphericity of 0.7 or greater and 1.0 or less, and a relative specific surface area of 3.0 or greater and 20 or less. A total degree of acetyl substitution of the cellulose acetate is 0.7 or greater and 3.0 or less.
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公开(公告)号：US20220142900A1
公开(公告)日：2022-05-12
申请号：US17435128
申请日：2019-03-18
Applicant: DAICEL CORPORATION
Inventor： Keiko KOBAYASHI , Masaya OMURA
Abstract: An object is to provide particles excellent in biodegradability, tactile sensation, and lipophilicity.
Provided are particles containing cellulose acetate, in which the particles have an average particle size of not less than 80 nm and not greater than 100 μm, a sphericity of not less than 0.7 and not greater than 1.0, a degree of surface smoothness of not less than 80% and not greater than 100%, and a surface contact angle with water of not less than 100°; and a total degree of acetyl substitution of the cellulose acetate is not less than 0.7 and not greater than 2.9.-
公开(公告)号：US20250049645A1
公开(公告)日：2025-02-13
申请号：US18290466
申请日：2022-04-25
Applicant: DAICEL CORPORATION
Inventor： Keiko KOBAYASHI , Sadaki TAKATA , Masaya OMURA
Abstract: A composition includes particles of a cellulose derivative and a surface treatment compound. The particles of the cellulose derivative have an average particle size from 0.08 μm to 100 μm. The surface treatment compound is an organic compound having a long-chain alkyl group and/or an inorganic powder. The inorganic powder has an average particle size of ⅓ or less of the average particle size of the particles of the cellulose derivative. A cosmetic composition includes the composition. A method for producing the composition includes mixing the particles of the cellulose derivative and the surface treatment compound. In the mixing, the particles of the cellulose derivative and the surface treatment compound are dry-mixed.
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Patent Agency Ranking
公开(公告)号：US20220282413A1
公开(公告)日：2022-09-08
申请号：US17637741
申请日：2020-08-28
Applicant: DAICEL CORPORATION
Inventor： Yoshitaka ITO , Masaya OMURA , Junko MAKINO , Yuki TSUKAMOTO , Fuai UEHARA , Hiroaki SHINTANI
IPC: D04H1/4382 , D04H1/72
Abstract: A production method for a fiber article includes: a contact step of, while transferring a plurality of first fibers, bringing a plurality of resin particles formed of high molecules that can be fiberized into contact with the plurality of first fibers; a first processing step of applying an external force to the plurality of first fibers brought into contact with the plurality of resin particles and narrowing gaps between fibers; and a second processing step of, by relieving the external force applied to the plurality of first fibers brought into contact with the plurality of resin particles, forming second fibers from the plurality of resin particles, the second fibers each having an outer diameter that is smaller than each of the first fibers and is set to a value in a range of 30 nm or more to 1.0 μm or less, and forming a fiber composite including the first fibers and the second fibers.
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公开(公告)号：US20240228741A9
公开(公告)日：2024-07-11
申请号：US18277826
申请日：2022-02-15
Applicant: DAICEL CORPORATION
Inventor： Masaya OMURA , Keiko KOBAYASHI , Junko MAKINO
CPC classification number: C08K3/22 , A61K8/19 , A61K8/731 , A61Q19/00 , C08K5/11 , C08K2003/2206 , C08K2201/005
Abstract: Provided is a cellulose acylate composition containing cellulose acylate particles and metal compound-containing particles. The total degree of substitution of the cellulose acylate is from 0.7 to 2.9. The metal compound is one or more types of compounds selected from an alkali metal compound and an alkaline earth metal compound. The composition is produced by adding one or more types of metal compounds selected from an alkali metal compound and an alkaline earth metal compound during and/or after removing a water-soluble polymer from a dispersion containing, as a dispersoid, cellulose acylate impregnated with a plasticizer to form cellulose acylate particles.
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公开(公告)号：US20220275546A1
公开(公告)日：2022-09-01
申请号：US17637599
申请日：2020-08-28
Applicant: DAICEL CORPORATION , DAIKIN INDUSTRIES, LTD.
Inventor： Yoshitaka ITO , Masaya OMURA , Junko MAKINO , Satoshi HARA , Hiroaki SHINTANI
IPC: D04H1/4382 , D04H1/4318 , B01D39/16
Abstract: A fiber article includes a plurality of first fibers and a plurality of second fibers each having an outer diameter smaller than that of each of the first fibers, the plurality of second fibers being supported in a dispersed state by the first fibers. A ratio D1/D2 of an outer diameter D1 of the first fiber to an outer diameter D2 of the second fiber is set to a value in a range of 15.0 or greater to 1666.7 or less. The outer diameter D1 is set to a value in a range of 5.0 μm or greater to 50.0 μm or less, and the outer diameter D2 is set to a value in a range of 30.0 nm or greater to 1.0 μm or less.
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9.发明申请公开(公告)号：US20200299488A1
公开(公告)日：2020-09-24
申请号：US16818619
申请日：2020-03-13
Applicant: DAICEL CORPORATION
Inventor： Keiko KOBAYASHI , Masaya OMURA
Abstract: Cellulose derivative particles including an alkoxy group having 2 or more carbons or an acyl group having 3 or more carbons, wherein the cellulose derivative particles have an average particle size of 80 nm or greater and 100 μm or less, a sphericity of 70% or greater and 100% or less, and a surface smoothness of 80% or greater and 100% or less; and a total substitution degree of the cellulose derivative is 0.7 or greater and 3 or less.
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公开(公告)号：US20250073134A1
公开(公告)日：2025-03-06
申请号：US18725685
申请日：2023-05-25
Applicant: DAICEL CORPORATION
Inventor： Masaya OMURA , Mizuki UENO
Abstract: Biodegradable spherical particles contain a biodegradable polymer as a main component. The biodegradable spherical particles have a particle size variation coefficient CV of 40% or less, and a biodegradation degree on the fifth day in a biodegradability test in accordance with OECD TG301F of 40% or less. A cosmetic composition contains the biodegradable spherical particles. A method for producing the biodegradable spherical particles includes preparing a mixture by mixing a biodegradable polymer, a plasticizer, and a water-soluble polymer; melt-kneading the mixture at 200° C. or higher and 280° C. or lower to yield a kneaded product; and removing the water-soluble polymer from the kneaded product.
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