公开(公告)号：US20230118481A1

公开(公告)日：2023-04-20

申请号：US17795903

申请日：2021-01-29

Applicant: KAO CORPORATION

Inventor： Shunsuke FUKUI ,  Yutaka YOSHIDA ,  Minato NAKAMURA ,  Shotaro SHIBATA

IPC: C08B15/06 ,  C08L1/02 ,  D06M15/70 ,  D06M15/53

Abstract: The invention relates to [1] a cellulose fiber composite excellent in dispersion stability, in which at least one amine selected from a polyamine and a monoamine having a reactive functional group bonds to anion-modified cellulose fibers, and which satisfies at least one of amine introduction ratio of 60% or less (requirement 1) and average polymerization degree of anion-modified cellulose fibers of 300 or less (requirement 2), [2] a dispersion in which the cellulose fiber composite is dispersed in a medium, [3] a resin composition produced by blending the cellulose fiber composite and a resin, [4] a molded article produced by molding the cellulose fiber composite or the resin composition, and [5] a method for producing the cellulose fiber composite.

公开(公告)号：US20210054541A1

公开(公告)日：2021-02-25

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

IPC: D01F11/02 ,  D01F2/28 ,  D21H11/20 ,  D21C1/02 ,  B33Y70/10

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.

公开(公告)号：US20190185587A1

公开(公告)日：2019-06-20

申请号：US15757791

申请日：2016-09-05

Applicant: KAO CORPORATION

Inventor： Yutaka YOSHIDA ,  Shotaro SHIBATA ,  Yoshiaki KUMAMOTO

IPC: C08B11/193 ,  D01F2/28

CPC classification number: C08B11/193 ,  C08B11/08 ,  C08G65/22 ,  C08G65/2606 ,  C08L25/06 ,  C08L63/00 ,  C08L71/02 ,  D01F2/28 ,  C08L1/284 ,  C08L75/16

Abstract: Modified cellulose fibers having an average fiber size of 5 μm or more, 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 modified cellulose fibers of the present invention have high dispersibility in the resin and can exhibit an effect of increasing strength, so that the modified cellulose fibers are suitable as various fillers, and the like, and the resin composition blended with the modified cellulose fibers can be suitably used in daily sundries, household electric appliance parts, wrapping materials for household electric appliance parts, automobile parts, resins for three-dimensional modeling, and the like.

公开(公告)号：US20190010253A1

公开(公告)日：2019-01-10

申请号：US15757747

申请日：2016-09-05

Applicant: KAO CORPORATION

Inventor： Yutaka YOSHIDA ,  Shotaro SHIBATA ,  Yoshiaki KUMAMOTO

IPC: C08B11/193

Abstract: Modified cellulose fibers having an average fiber size of 1 nm or more and 500 nm or less, 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 a viscosity at 25° C. of a dispersion having a concentration of 0.2% by mass, obtained by a finely dispersing treatment in any one of DMF, MEK, and toluene is 15 mPa·s or more, and wherein the modified cellulose fibers have a cellulose I crystal structure. The modified cellulose fibers of the present invention have high dispersibility in the resin and can exhibit an effect of increasing strength, so that the modified cellulose fibers are suitable as various fillers, and the like.

公开(公告)号：US20230095911A1

公开(公告)日：2023-03-30

申请号：US17959943

申请日：2022-10-04

Applicant: KAO CORPORATION

Inventor： Kyohei YAMATO ,  Yutaka YOSHIDA

IPC: C08B15/06 ,  C08B15/04 ,  D21H11/20 ,  D21H15/02 ,  C08L101/00 ,  C08L1/08 ,  D06M15/55 ,  B82Y30/00 ,  C08G81/00 ,  C08J5/18 ,  C08L63/00 ,  D06M13/325 ,  D06M13/44 ,  D06M13/46

Abstract: A fine cellulose fiber composite in which a modifying group is bound to a carboxy group of fine cellulose fibers, the fine cellulose fibers having a carboxy group content of 0.1 mmol/g or more, wherein the fine cellulose fiber composite has an average aspect ratio of 1 or more and 150 or less; and a resin composition containing the fine cellulose fiber composite and a resin. The resin composition containing a fine cellulose fiber composite of the present invention has excellent heat resistance, and the molded article of this resin composition has excellent mechanical strength, heat resistance, and dimensional stability. Accordingly, 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.

公开(公告)号：US20210230795A1

公开(公告)日：2021-07-29

申请号：US17051065

申请日：2019-06-11

Applicant: KAO CORPORATION

Inventor： Yutaka YOSHIDA ,  Shotaro SHIBATA ,  Haruka NAKAGAWA ,  Yoshiaki KUMAMOTO ,  Norihiro ITO ,  Yusaku ASAI

IPC: D06M13/11 ,  C08L1/02 ,  C08K7/02 ,  D06M13/08

Abstract: The present invention relates to a method for producing modified cellulose fibers having cellulose I crystal structure, comprising: step A: introducing Substituent Group A to cellulose fibers via an ether bond in a solvent comprising water in the presence of a base, and step B: introducing Substituent Group B to cellulose fibers via an ether bond in a solvent comprising water in the presence of a base, wherein the method includes the steps A and B concurrently, or in the order of the step A and then the step B. The cellulose fibers of the present invention obtained by the method for production of the present invention have favorable dispersibility in a hydrophobic medium and a controlled increase in viscosity.

公开(公告)号：US20190023859A1

公开(公告)日：2019-01-24

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

CPC classification number: C08J5/046 ,  C08B11/08 ,  C08B11/193 ,  C08J5/04 ,  C08J2300/104 ,  C08J2300/22 ,  C08J2301/28 ,  C08L1/28 ,  C08L1/284 ,  C08L61/04 ,  C08L63/00 ,  C08L79/08 ,  C08L101/00 ,  C08L101/06 ,  C08L67/06 ,  C08L75/04 ,  C08L7/02

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.

公开(公告)号：US20190225712A1

公开(公告)日：2019-07-25

申请号：US16317360

申请日：2017-08-04

Applicant: KAO CORPORATION

Inventor： Kyohei YAMATO ,  Yutaka YOSHIDA

IPC: C08B15/06 ,  C08B15/04 ,  C08L63/00 ,  C08J5/18 ,  C08G81/00 ,  D21H11/20 ,  D21H15/02 ,  D06M13/46 ,  D06M13/44 ,  D06M13/325

Abstract: A fine cellulose fiber composite in which a modifying group is bound to a carboxy group of fine cellulose fibers, the fine cellulose fibers having a carboxy group content of 0.1 mmol/g or more, wherein the fine cellulose fiber composite has an average aspect ratio of 1 or more and 150 or less; and a resin composition containing the fine cellulose fiber composite and a resin. The resin composition containing a fine cellulose fiber composite of the present invention has excellent heat resistance, and the molded article of this resin composition has excellent mechanical strength, heat resistance, and dimensional stability. Accordingly, 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.

公开(公告)号：US20180244806A1

公开(公告)日：2018-08-30

申请号：US15757784

申请日：2016-09-05

Applicant: KAO CORPORATION

Inventor： Yutaka YOSHIDA ,  Takuma TSUBOI ,  Shotaro SHIBATA ,  Yoshiaki KUMAMOTO ,  Motoi KONISHI

IPC: C08B11/193 ,  C08J3/00 ,  C08J5/06 ,  C08L9/06

CPC classification number: C08B11/193 ,  B60C1/00 ,  C08B11/08 ,  C08J3/005 ,  C08J5/06 ,  C08J2309/06 ,  C08J2401/26 ,  C08L1/284 ,  C08L9/02 ,  C08L9/06 ,  C08L2205/16

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.

公开(公告)号：US20220213229A1

公开(公告)日：2022-07-07

申请号：US17606786

申请日：2020-05-28

Applicant: KAO CORPORATION

Inventor： Haruka NAKAGAWA ,  Yutaka YOSHIDA ,  Shotaro SHIBATA ,  Rinako HANO ,  Ayako TANAKA

IPC: C08B11/08 ,  C08B11/193 ,  D01F2/28

Abstract: The present invention is a method for producing a modified cellulose including the following step A: step A: introducing a cellulose raw material with a substituent having 6 or more carbon atoms to a group in which a hydrogen atom is removed from a hydroxyl group of a cellulose backbone, in the presence of water and a surfactant. The present invention relates to a method for producing a modified cellulose having a high affinity of an organic solvent, a resin or the like, and a hydrophobic medium, using a reaction system with low environmental loads and with prospects of reduction in production costs.