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公开(公告)号：US20200048373A1
公开(公告)日：2020-02-13
申请号：US16486032
申请日：2018-03-06
Applicant: KAO CORPORATION
Inventor： Shotaro Shibata , Yutaka Yoshida , Hisaho Kawahara , Yoshiaki Kumamoto
Abstract: A method for producing an additive for a rubber composition, including the step of preparing modified cellulose fibers including introducing one or more compounds selected from unsaturated group-containing alkylene oxide compounds and unsaturated group-containing glycidyl ether compounds to cellulose-based raw materials in the presence of a base, via an ether bonding, and thereafter carrying out a finely fibrillating treatment, wherein the modified cellulose fibers are cellulose fibers bound to one or more substituents, via an ether bonding, selected from substituents represented by the following general formula (1) and substituents represented by the following general formula (2): —CH2—CH(OH)—R1 (1); and —CH2—CH(OH)—CH2—(OA)n—O—R1 (2), wherein the modified cellulose fibers have cellulose I crystal structure.
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公开(公告)号：US12180615B2
公开(公告)日：2024-12-31
申请号：US16958369
申请日：2018-12-21
Applicant: Kao Corporation
Inventor： Shunsuke Fukui , Yutaka Yoshida , Kyohei Yamato , Ryohta Yamamoto
Abstract: The present invention relates to a method for producing fine hydrophobically modified cellulose fibers wherein anionic group-containing anionically modified cellulose fibers are bound to a modifying group, the method including subjecting hydrophobically modified cellulose fibers having an average fiber length of 1 μm or more and 1,000 μm or less to a finely pulverizing treatment in an organic solvent. The fine hydrophobically modified cellulose fibers obtained by the method for production of the present invention can be suitably used in various resin manufactured articles for daily sundries, household electric appliance parts, wrapping materials for household electric appliance parts, and various industrial applications such as automobile parts.
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公开(公告)号：US11136416B2
公开(公告)日：2021-10-05
申请号：US15757784
申请日：2016-09-05
Applicant: KAO CORPORATION
Inventor： Yutaka Yoshida , Takuma Tsuboi , Shotaro Shibata , Yoshiaki Kumamoto , Motoi Konishi
Abstract: A rubber composition containing a rubber and modified cellulose fibers, wherein one or more substituents selected from substituents represented by the following general formulas (1) and (2): —CH2—CH(OH)—R1 (1), —CH2—CH(OH)—CH2—(OA)n—O—R1 (2), wherein each R1 in the general formulas (1) and (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms are bonded to cellulose fibers via an ether bond, wherein the modified cellulose fibers have a cellulose I crystal structure. The rubber composition of the present invention can be suitably used for machine tool parts, household electric appliance parts, automobile parts, and the like.
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Patent Agency Ranking
公开(公告)号：US10961425B2
公开(公告)日：2021-03-30
申请号：US15561454
申请日：2016-03-08
Applicant: KAO CORPORATION
Inventor： Yutaka Yoshida , Yoshiaki Kumamoto
IPC: C09K8/80 , C09K8/70 , C09K8/10 , E21B43/267 , A61Q19/00 , C08K5/16 , A61L9/01 , C08L1/04 , A61K8/73 , A61K8/02 , C09K8/40 , C09K8/588 , C09K8/90 , C09K8/92 , E21B21/00 , E21B43/20 , E21B43/25 , A61Q5/02 , A61Q5/10 , A61Q1/06
Abstract: A water-based composition containing: (A) fine cellulose fibers having a number-average fiber diameter of 0.5 nm or more and 200 nm or less, and having a carboxy group content of 0.1 mmol/g or more, wherein the carboxy group forms a salt with an alkali metal; and (B) an additive containing one or more compounds having carbon atoms and nitrogen atom or atoms, wherein a ratio thereof per molecule of the compound (number of carbon atoms/number of nitrogen atoms) is 3 or more and 45 or less, wherein the content of the component (A) is 0.2% by mass or more and 10% by mass or less, and wherein the content of the component (B) is 3 parts by mass or more and 150 parts by mass or less, based on 100 parts by mass of the component (A), and wherein the water-based composition has a viscosity at 80° C. at a rotational speed of 30 rpm of 80 mPa·s or more. Since the fine cellulose fibers or a salt composite thereof of the present invention retains a high viscosity even under high temperatures, the fine cellulose fibers or a salt composite thereof can be suitably used in various industrial applications represented by thickening agents during gas and oil drilling, cosmetic applications, and other applications requiring manufactured article stability at high temperatures.
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公开(公告)号：US11959194B2
公开(公告)日：2024-04-16
申请号：US17052278
申请日：2019-06-06
Applicant: KAO CORPORATION
Inventor： Shunsuke Fukui , Yutaka Yoshida , Kyohei Yamato , Junnosuke Saito , Takuya Morioka , Tadanori Yoshimura , Takuma Tsuboi
Abstract: A method for producing shortened anionically modified cellulose fibers having an average fiber length of 1 μm or more and 500 μm or less, the method including cleaving sugar chains of anionically modified cellulose fibers by thermal decomposition under temperature conditions of 50° C. or higher and 230° C. or lower, wherein the average fiber length of the anionically modified cellulose fibers is 700 μm or more and 10000 μm or less. By the use of shortened anionically modified cellulose fibers or the like obtained by the method for production of the present invention, a dispersion containing fine cellulose fibers having a low viscosity and excellent handling property can be prepared while at a high concentration, so that the dispersion can be suitably used in various industrial applications such as daily sundries, household electric appliance parts, packaging materials for household electric appliances, automobile parts, and materials for three-dimensional modeling.
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公开(公告)号：US20210130499A1
公开(公告)日：2021-05-06
申请号：US16491930
申请日：2018-03-06
Applicant: KAO CORPORATION
Inventor： Shotaro Shibata , Yutaka Yoshida , Hisaho Kawahara , Yoshiaki Kumamoto
IPC: C08B11/187 , C08B11/193 , C08B11/20 , C08L7/00 , D06M13/11
Abstract: Modified cellulose fibers comprising cellulose fibers bound to one or more substituents, via an ether bonding, selected from substituents represented by the following general formula (1) and substituents represented by the following general formula (2) and one or more substituents selected from substituents represented by the following general formula (3) and substituents represented by the following general formula (4): —CH2—CH(OH)—R1 (1); —CH2—CH(OH)—CH2—(OA)n—O—R1 (2); —CH2—CH(OH)—R2 (3); —CH2—CH(OH)—CH2—(OA)n—O—R2 (4), wherein the modified cellulose fibers have cellulose I crystal structure.
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公开(公告)号：US10738169B2
公开(公告)日：2020-08-11
申请号：US15757748
申请日：2016-09-05
Applicant: KAO CORPORATION
Inventor： Yutaka Yoshida , Shotaro Shibata , Yoshiaki Kumamoto
IPC: C08J5/04 , C08L1/28 , C08L101/06 , C08L101/00 , C08L61/04 , C08B11/193 , C08B11/08 , C08L79/08 , C08L63/00
Abstract: A resin composition containing: (A) one or more resins selected from the group consisting of a thermoplastic resin, and a curable resin selected from an epoxy resin, a (meth)acrylic resin, a phenolic resin, an unsaturated polyester resin, a polyurethane resin, or a polyimide resin; and (B) modified cellulose fibers wherein one or more substituents selected from substituents represented by the following general formulas (1) and (2): —CH2—CH(OH)—R1 (1), —CH2—CH(OH)—CH2—(OA)n-O—R1 (2), wherein each R1 in the general formulas (1) and (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms are bonded to cellulose fibers via an ether bond, wherein the modified cellulose fibers have a cellulose I crystal structure. The resin composition of the present invention can be suitably used in various applications such as daily sundries, household electric appliance parts, wrapping materials for household electric appliance parts, automobile parts, and resins for three-dimensional modeling.
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公开(公告)号：US10906993B2
公开(公告)日：2021-02-02
申请号：US15757700
申请日：2016-09-05
Applicant: KAO CORPORATION
Inventor： Yutaka Yoshida , Shotaro Shibata , Yoshiaki Kumamoto , Takuma Tsuboi , Motoi Konishi
IPC: C08B11/193 , C08L9/06 , C08L23/06 , C08L25/06 , C08L75/16 , C08L9/02 , C08L1/28 , C08L7/00 , C08L63/00 , C08L75/14
Abstract: Modified cellulose fibers, wherein each of (A) one or more substituents selected from substituents represented by the following general formula (1) and substituents represented by the following general formula (2): —CH2—CH(OH)—R1 (1); —CH2—CH(OH)—CH2—(OA)n-O—R1 (2), wherein each R1 in the general formula (1) and the general formula (2) is independently a linear or branched alkyl group having 3 or more carbon atoms and 30 or less carbon atoms; n in the general formula (2) is a number of 0 or more and 50 or less; and A is a linear or branched, divalent saturated hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms, and (B) a substituent represented by the following general formula (3): —CH2—CH(OH)—R2 (3), wherein R2 in the general formula (3) is an alkyl group having 1 or more carbon atoms and 2 or less carbon atoms, is independently bonded to cellulose fibers via an ether bond, wherein the modified cellulose fibers have a cellulose I crystal structure. The resin composition blended with the modified cellulose fibers of the present invention can be suitably used in various industrial applications such as daily sundries, household electric appliance parts, wrapping materials for household electric appliance parts and automobile parts.
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