公开(公告)号：EP4424894A1

公开(公告)日：2024-09-04

申请号：EP22887166.1

申请日：2022-10-28

申请人： Oji Holdings Corporation

发明人： KAJITA, Keiichi ,  NAKAYAMA,Yasufumi ,  ISOGAI, Takuya ,  FUSHIMI, Hayato ,  YAMANAKA, Mio ,  SHISHIDO, Rina ,  SAKAI, Mizuki ,  OKUDA, Keiko ,  SHIRAO, Takeshi ,  MINAMI, Takehiro

IPC分类号： D04H1/26 ,  B29B11/16 ,  B29B15/08 ,  B29C43/34 ,  B29C45/00 ,  B29C70/06 ,  B29C70/42 ,  B32B5/28 ,  B32B7/022 ,  B32B23/02 ,  B32B23/10 ,  C08J5/04 ,  C08J5/18 ,  D04H1/425 ,  D04H1/4291 ,  D04H1/4382 ,  D04H1/542 ,  D04H1/58 ,  B29K105/12

CPC分类号： B29B9/04 ,  B29B9/06 ,  B29B9/14 ,  B29B11/16 ,  B29B15/08 ,  B29C43/34 ,  B29C45/00 ,  B29C70/06 ,  B29C70/42 ,  B32B5/28 ,  B32B7/022 ,  B32B23/02 ,  B32B23/10 ,  C08J3/12 ,  C08J5/04 ,  C08J5/18 ,  D04H1/26 ,  D04H1/425 ,  D04H1/4291 ,  D04H1/4382 ,  D04H1/542 ,  D04H1/58

摘要： An object of the present invention is to provide a fiber aggregate for a molded article having satisfactory appearance that can provide a molded article excellent in stiffness and strength against bending, further excellent in impact resistance and appearance. The object of the present invention is also to provide a pre-sheet and a molded article that are obtained from the fiber aggregate for the molded article. The fiber aggregate for molding according to the present invention includes the fiber component and the thermal fusion bonding resin component, in which the fiber component contains a pulp fiber and a polypropylene fiber; the thermal fusion bonding resin component contains at least one selected from the group consisting of polyethylene and acid-modified polyethylene; a content of the thermal fusion bonding resin component in the fiber aggregate is 3% by mass or more and 18% by mass or less; and when T represents a tensile strength of the fiber aggregate in a first direction, and Y represents a tensile strength of the fiber aggregate in a second direction perpendicular to the first direction, a T/Y ratio is 0.5 or larger and 1.5 or smaller.

公开(公告)号：EP4141034A1

公开(公告)日：2023-03-01

申请号：EP21791626.1

申请日：2021-04-22

申请人： Oji Holdings Corporation

发明人： YAMANAKA, Mio ,  OCHIAI, Takahiro ,  TANAKA, Akihiro

IPC分类号： C08B15/04 ,  C09D101/02 ,  D21H11/20 ,  C08B5/00 ,  C08B5/14

摘要： The present invention relates to microfibrous cellulose capable of exhibiting an excellent dispersibility stability and an excellent coating suitability when added to paint.
To this end, the present invention provides fibrous cellulose having a fiber width of 1,000 nm or less and containing an ionic substituent. An amount of the ionic substituent in the fibrous cellulose is 0.10 mmol/g or more and 1.50 mmol/g or less. A polymerization degree of the fibrous cellulose is 150 or more and 515 or less. When the fibrous cellulose is dispersed in a dispersion solvent containing water and isopropanol to obtain a dispersion fluid having a 7:3 mass ratio of water and isopropanol and a viscosity of 2,500 mPa -s at 23°C, and the dispersion fluid is stirred under predetermined stirring conditions, a viscosity change rate falls within ±50% as calculated by the following formula: viscosity change rate % = viscosity after stirring − viscosity before stirring / viscosity before stirring × 100