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

IPC: D01F2/00 ,  C08K7/02 ,  C08L21/00 ,  C08L87/00

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.

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

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

CPC classification number: D01F11/02 ,  B33Y70/10 ,  D01F2/28 ,  D21C1/02 ,  D21H11/20

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：US10781552B2

公开(公告)日：2020-09-22

申请号：US15108211

申请日：2014-12-11

Applicant: KAO CORPORATION

Inventor： Kyohei Yamato ,  Yoshiaki Kumamoto

IPC: C08B15/00 ,  D06M15/53 ,  C08B15/04 ,  C08L1/04 ,  C08L63/00 ,  D06M13/17 ,  C08L33/08 ,  D06M13/325 ,  C08L33/10 ,  C08L67/00 ,  C08L101/00 ,  D06M13/402 ,  D06M101/06

Abstract: A fine cellulose fiber composite containing fine cellulose fibers and a polymer having an ethylene oxide/propylene oxide (EO/PO) copolymer moiety or a propylene oxide (PO) polymer moiety, the fine cellulose fibers being connected with the polymer via an amide bond. The fine cellulose fiber composite of the present invention has high dispersibility in the resin and can exhibit an effect of increasing strength, so that the fine cellulose fiber composite is suitably used as various fillers, and the like. Also, the resin composition of the present invention containing a dispersion of the fine cellulose fiber composite 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：US10266968B2

公开(公告)日：2019-04-23

申请号：US15107991

申请日：2014-12-11

Applicant: KAO CORPORATION

Inventor： Kyohei Yamato ,  Yoshiaki Kumamoto

IPC: D01F11/02 ,  C08L9/06 ,  C08L1/02 ,  C08B15/06 ,  D06M13/325 ,  D06M13/17 ,  C08L63/00 ,  C08L67/00 ,  C08L33/10 ,  C08L33/08 ,  C08B15/00 ,  C08L1/04 ,  C08G81/00 ,  C08B15/04 ,  C08L71/02 ,  C08L71/00 ,  D06M101/06

Abstract: A fine cellulose fiber composite containing fine cellulose fibers having a carboxy group and an amine having an ethylene oxide/propylene oxide (EO/PO) copolymer moiety, the fine cellulose fibers being bound with the amine at the carboxy group to form a salt, wherein the fine cellulose fibers have a carboxy group content of 0.1 mmol/g or more, and wherein the molecular weight of the EO/PO copolymer moiety is from 700 to 10,000, and wherein a PO content ratio in the EO/PO copolymer moiety is from 1 to 70% by mol. The fine cellulose fiber composite of the present invention has high dispersibility in the resin and can exhibit an effect of increasing strength, so that the fine cellulose fiber composite is suitably as various fillers, and the like.